Utilização de métodos alternativos como indutor de muda forçada em codornas poedeiras / Use of alternative methods as an inducer of forced molting in laying quail

Objetivou-se avaliar métodos alternativos de restrição alimentar qualitativa e quantitativa em comparação à técnica convencional de muda forçada em codornas japonesas para o segundo ciclo de produção. O período de muda forçada teve duração de 10 dias e dois períodos de 21 dias de pós-muda. Foram utilizadas 72 codornas japonesas fêmeas, emfinal de produção com 72 semanas deidade. As aves foram distribuídas em delineamento inteiramente casualizado com três tratamentos e quatro repetições cada, com seiscodornas por repetição. Os tratamentos experimentais foram:T1 ­aves submetidas a três dias de jejum com posterior fornecimento de ração de postura à vontade por setedias; T2 ­aves que receberam alimentação controlada (10 g/ave/dia) por 10 dias; T3 ­aves que receberam farelo de arroz à vontade por 10 dias. Durante todo o experimento todasas aves foram submetidas a iluminação natural com média de 12 horas de luz diária e água a vontade e após os 10 dias de muda foi fornecido ração de postura a vontade. A utilização do T2 (10 g/ave/dia de ração de postura) e de farelo de arroz como alimentoalternativo no programa de muda forçada foi viável. Mesmo a perda de peso sendo abaixo do recomentado, as aves que receberam 10 g de ração ave/dia e farelo de arroz à vontade apresentaram resultados de desempenho e qualidade do ovo pós muda semelhantes àsaves que ficaram em jejum, além de possibilitar melhores condições de bem-estar animal.(AU)

The objective was to evaluate alternative methods of qualitative and quantitative feed restriction compared to theconventional technique of forced moulting in Japanese quails for the second production cycle. The forced moulting period lasted 10 days and two 21-day post-molt periods. 72 female Japanese quails were used, at the end of production at 72 weeks of age. Thebirds were distributed in a completely randomized design with three treatments and four replications each, with sixquails per replicate. The experimental treatments were: T1 ­birds submitted to three days of fasting with subsequent provision of layingfeed ad libitum for sevendays; T2 ­birds that received controlled feeding (10 g/bird/day) for 10 days; T3 ­birds that received rice bran ad libitum for 10 days. Throughout the experiment, all birds were submitted tonatural lighting with an average of12hours of daily light and water ad libitum and after 10 days of molting, laying feed was provided ad libitum. The use of T2 (10 g/bird/day of laying ration) and ricebran as an alternativefood in the forced molt program was feasible. Even the weight loss being below the recommended, the birds that received 10 g of poultry feed/day and rice bran ad libitum showed similar post-moult performance and egg quality results to birds that were fasted, in addition to enabling better conditions. of animal welfare.(AU)

Moringa Oleifera: an alternative ingredient to improve the egg quality of Japanese quail / [Moringa oleifera: um ingrediente alternativo na melhora da qualidade de ovos de codornas japonesas]

This study aims to evaluate effects of inclusion of moringa in Japanese quail diets on laying performance, egg quality, blood parameters, serum biochemical profile, and behavior. One hundred and forty-four Japanese quails, approximately 35-d-old, were distributed in a completely randomized design with four treatments and six replications. Treatments were diet inclusion of 0, 2, 4 and 6% of dried and ground moringa leaves. The inclusion of moringa in diets reduces the quadratic feed intake up to the level of 1.20%, increases weight of eggs with a quadratic behavior up to 3.80%, and linearly increases yolk weight. Yolk color changes with higher levels of inclusion of moringa and resulted in more intense colors. The biochemical profile of quails changed slightly but remains within the normal range. The inclusion of 4% of moringa in diets increases alkaline phosphatase. Regarding cholesterol and triglycerides, diet with 6% moringa inclusion was lower when compared to the others. The behavior of laying quails does not change due to inclusion of moringa in diets. Up to 3.83% of Moringa oleifera can be included in Japanese quail diet to improve egg quality without compromising performance, biochemical profile, blood parameters and behavior.(AU)

O objetivo deste estudo foi avaliar a inclusão de Moringa oleifera na dieta de codornas japonesas sobre o desempenho, a qualidade de ovos, os parâmetros sanguíneos, o perfil bioquímico e o comportamento. Foram utilizadas 144 codornas japonesas, com aproximadamente 35 dias de idade, as quais foram distribuídas em delineamento inteiramente ao acaso, com quatro tratamentos e seis repetições cada. Foram fornecidas dietas com 0, 2, 4 e 6% de folhas desidratadas e moídas de moringa. A inclusão de moringa nas dietas reduziu quadraticamente o consumo até o nível de 1,2%, aumentou o peso dos ovos com comportamento quadrático até o nível de 3,8% e aumentou linearmente o peso da gema. A coloração da gema se intensificou com maiores inclusões de moringa. O perfil bioquímico sofreu alterações leves, mas não saiu dos padrões normais para codornas. A inclusão de 4% de moringa nas dietas aumentou os níveis de fosfatase alcalina. Já a inclusão de 6% reduziu níveis de colesterol e triglicérides. O comportamento das codornas não se alterou com a inclusão de moringa nas dietas. A inclusão de até 3,83% de Moringa oleifera na dieta de codornas japonesas aumenta a qualidade de ovos sem comprometer o desempenho, o perfil bioquímico, os parâmetros sanguíneos e o comportamento delas.(AU)

Effects of Dietary Hot Pepper Waste Powder on Gut Health and Small Intestine Properties in Japanese Quails

The present study was conducted to evaluate whether dietary hot pepper waste powder (HPWP) would affect the performance and small intestine histology parameters in Japanese quail chicks. A total of 160, one-day-old Japanese quail chicks were divided into 4 treatment groups of similar mean weight, comprising 4 subgroups of 10 chicks each. Chicks were fed on their basal diet supplemented by 0, 100, 200 or 400 mg/kg of dietary HPWP for each kg of starter (0 to 10 days), grower (11 to 24 days) and finisher (25 to 42 days) diets for 7 weeks. At the end of 42 days of age, 10 birds per subgroup were slaughtered and intestinal samples were taken to evaluate histomorphological analyses. The results showed that dietary HPWP supplementation did not affect performance parameters, but 400 mg/kg HPWP supplementation tended to increase the growth performance of the chicks. The villus length, submucosa layer (p 0.05), serosa, muscular layer, villus-crypt length ratio, and villus surface area increased with HPWP supplementation (p 0.01). The goblet cell numbers of the group receiving 200 mg/kg HPWP increased compared to the control and 400 mg/kg HPWP supplementation groups (p 0.05). It could be concluded that dietary HPWP supplementation could improve gut health in quails.(AU)

Arthrospira (Spirulina) Platensis Can Be Considered as a Probiotic Alternative to Reduce Heat Stress in Laying Japanese Quails

This study was conducted to investigate the effects of Arthrospira platensis (Spirulina platensis, SP) on feed intake, feed conversion ratio, egg weight, hen day egg production, intestinal microflora, heat stress biomarkers, and HSP70 gene expression in laying Japanese quails (Coturnix coturnix japonica) suffering heat stress condition. A total of 250 female quails were allocated to 5 treatments, 5 replicates and 10 birds in each replicate in a completely randomized design. Experimental treatments included: 1) basal diet, 2) basal diet+ 0.03 % probiotic, 3) basal diet+ 0.1 % SP, 4) basal diet+ 0.3 % SP, 5) basal diet+ 0.5 % SP. During the last 6 days of the experiment, the quails were exposed to 8h of 34±1°C. The birds had free access to feed and water during the experiment. The results showed that using probiotic and different levels of Spirulina had no significant effect on laying performance of Japanese quails (p>0.05). Probiotic supplement increased Lactobacil bacteria population in laying quails ileum under heat stress (p 0.05). Different levels of SP decreased Escherichia coli population in laying quails ileum suffering heat stress (p 0.05).SP at the level of 0.5% caused the lowest blood Malondialdehyde level, heterophil, and H/L ratio (p 0.05).However, HSP70 gene expression in the heart or the liver of laying quails was not different (p>0.05). In conclusion, the results of the present study revealed that SP at the level of 0.5 % has the potential to be considered as a probiotic alternative in the diet of laying quails suffering heat stress condition.

Effects of Dietary Hot Pepper Waste Powder on Gut Health and Small Intestine Properties in Japanese Quails

The present study was conducted to evaluate whether dietary hot pepper waste powder (HPWP) would affect the performance and small intestine histology parameters in Japanese quail chicks. A total of 160, one-day-old Japanese quail chicks were divided into 4 treatment groups of similar mean weight, comprising 4 subgroups of 10 chicks each. Chicks were fed on their basal diet supplemented by 0, 100, 200 or 400 mg/kg of dietary HPWP for each kg of starter (0 to 10 days), grower (11 to 24 days) and finisher (25 to 42 days) diets for 7 weeks. At the end of 42 days of age, 10 birds per subgroup were slaughtered and intestinal samples were taken to evaluate histomorphological analyses. The results showed that dietary HPWP supplementation did not affect performance parameters, but 400 mg/kg HPWP supplementation tended to increase the growth performance of the chicks. The villus length, submucosa layer (p 0.05), serosa, muscular layer, villus-crypt length ratio, and villus surface area increased with HPWP supplementation (p 0.01). The goblet cell numbers of the group receiving 200 mg/kg HPWP increased compared to the control and 400 mg/kg HPWP supplementation groups (p 0.05). It could be concluded that dietary HPWP supplementation could improve gut health in quails.

Arthrospira (Spirulina) Platensis Can Be Considered as a Probiotic Alternative to Reduce Heat Stress in Laying Japanese Quails

This study was conducted to investigate the effects of Arthrospira platensis (Spirulina platensis, SP) on feed intake, feed conversion ratio, egg weight, hen day egg production, intestinal microflora, heat stress biomarkers, and HSP70 gene expression in laying Japanese quails (Coturnix coturnix japonica) suffering heat stress condition. A total of 250 female quails were allocated to 5 treatments, 5 replicates and 10 birds in each replicate in a completely randomized design. Experimental treatments included: 1) basal diet, 2) basal diet+ 0.03 % probiotic, 3) basal diet+ 0.1 % SP, 4) basal diet+ 0.3 % SP, 5) basal diet+ 0.5 % SP. During the last 6 days of the experiment, the quails were exposed to 8h of 34±1°C. The birds had free access to feed and water during the experiment. The results showed that using probiotic and different levels of Spirulina had no significant effect on laying performance of Japanese quails (p>0.05). Probiotic supplement increased Lactobacil bacteria population in laying quails ileum under heat stress (p 0.05). Different levels of SP decreased Escherichia coli population in laying quails ileum suffering heat stress (p 0.05).SP at the level of 0.5% caused the lowest blood Malondialdehyde level, heterophil, and H/L ratio (p 0.05).However, HSP70 gene expression in the heart or the liver of laying quails was not different (p>0.05). In conclusion, the results of the present study revealed that SP at the level of 0.5 % has the potential to be considered as a probiotic alternative in the diet of laying quails suffering heat stress condition.(AU)

Exigência de proteína bruta para codornas europeias / Crude protein requirements for European quails

A precisão no atendimento das exigências nutricionais é de grande importância na produção de codornas, porém há ausência de consenso quanto às recomendações de proteína bruta (PB) para codornas de linhagens específicas para corte. O presente estudo teve como objetivo determinar a exigência de PB para codornas europeias sobre o desempenho e sobre as características de carcaça. Foi utilizado o delineamento inteiramente casualizado em esquema fatorial 5 × 2, sendo cinco níveis de PB para machos e fêmeas. Na fase inicial (1 a 21dias), foram utilizadas 1.800 codornas e níveis de PB de 20,0, 22,5, 25,0, 27,5 e 30,0%, com seis repetições contendo 30 aves cada. Na fase de crescimento (22 a 45 dias), foram usadas 1.620 codornas e níveis de PB de 17,5, 19,5, 22,0, 24,5 e 27,0%, com seis repetições contendo 27 aves cada. As dietas foram fareladas a base de milho e farelo de soja. O desempenho das codornas foi avaliado ao final de cada período, e o rendimento de carcaça no 45º dia. Aos 21 dias houve maior ganho de peso e melhor conversão alimentar, independentemente do sexo, com 25,50% e 27,06% de PB, respectivamente. No período de 22 a 45 dias, observou-se somente efeito do sexo, sendo que as fêmeas obtiveram desempenho superior. Com relação às características de carcaça, os machos obtiveram maior rendimento de carcaças (quente, fria e dorso); já as fêmeas, apresentaram maior rendimento de cortes (peito, moela e fígado).

Accuracy in meeting nutritional requirements has great importance in quail nutrition however there is a lack of consensus on crude protein (CP) recommendations specific for European quails. The present study aimed to define crude protein requirements for European quails on performance and carcass characteristics. A completely randomized design was used in a 5 × 2 factorial scheme, with five CP levels for male and female quails. In the starting phase (1 to 21 days) it was used 1,800 quails and CP levels were 20,0, 22,5, 25,0, 27,5 and 30,0%, with six replicates containing 30 birds each. In the growth phase (22 to 45 days) it was used 1.620 quails and CP levels were 17,5, 19,5, 22,0, 24,5 and 27,0%, with six replicates containing 27 birds each. Theirs d was a corn soybean based diet in grounded form. The performance of the quails was evaluated in the end of each experimental phase and carcass yield in 45 days. Weight gain and feed conversion ratio was higher for 25,50% and 27,06% respectively, regardless of gender, in 21 days. In the growth phase, it was observed just gender effect in which female quails had higher performance. For carcass characteristics, male quails obtained higher carcass and dorse yield and female quails higher breast, liver and gizzard yields.

Technical Cashew Nutshell Liquid in Diets of Growing Meat-Type Quails

The aim of this study was to evaluate the inclusion of technical cashew nutshell liquid (TCNSL) in European quails (Coturnix coturnix coturnix) diets from 1 to 35 days of age on the performance, carcass traits, and development of the digestive organs. 575 quails were distributed in a completely randomized design with five treatments (0%, 0.25%, 0.50%, 0.75%, and 1.00% TCNSL), five replicates, and 23 birds per experimental unit. Live performance was evaluated by weight gain, average feed intake, and feed to conversion ratio. The relative weight of the digestive organs (proventriculus, gizzard, pancreas, liver, small intestine, and large intestine), length of the small and large intestine, and carcass and parts yield (breast, wing, and leg) were determined at the end of the experimental period (35 days). The supplementation of quail diets with TCNSL did not influence live performance or carcass and parts yields. The relative weights of the proventriculus, gizzard, pancreas, small intestine, and large intestine, and the length of the small intestine and large intestine were not affected by the dietary inclusion of TCNSL. However, TCNSL supplementation had a quadratic effect (p 0.05) on liver relative weight, with the lowest relative weight predicted at 0.33% TCNSL. Quails fed 1% TCNSL showed higher liver relative weight compared with those fed the TCNSL-free diets. The dietary inclusion of up to 1% TCNSL did not influence the performance, carcass traits, or development of the digestive organs of European quails.

Supplementation of Natural Antioxidants to Reduced Crude Protein Diets for Japanese Quails Exposed to Heat Stress

The study aimed at comparing the effects of the supplementation of natural antioxidant sources to a reduced crude protein diet on the performance, carcass traits, blood parameters, liver antioxidant enzyme activities and meat lipid peroxidation of Japanese quails exposed to heat stress. A total of 640 14-day-old male Japanese quails were exposed to two different temperature treatments (TT): thermoneutral (TN) or heat stress (HS)and were fed five different dietary treatments (DTs). A normal-protein diet (SCP) was formulated according to the National Research Council (24% CP). The reduced crude protein diet (RCP) was formulated to contain 3% less protein than that of the SCP diet. Three additional diets were prepared by supplementing the RCP with200 mg/kg of -tocopherol acetate (RCP+TA200), pomegranate peel extract (RCP+PPE200) or apple peel extract (RCP+APE200). HS significantly deteriorated the growth performance of quails throughout the experiment. Quails fed the SCP and RCP+PPE200 presented higher hematocrit values. Feeding the RCP+TA200 and RCP+PPE200 diets reduced the blood heterophil/lymphocyte (H/L) ratio compared with the other diets. Quails fed the SCP, RCP+TA200, RCP+PPE200 and RCP+APE200 diets presented higher liver catalase and glutathione peroxidase activities, plasma uric acid level, and lower meat malondialdehyde value at 7days of age compared with those fed the RCP diet. In conclusion, the results show that the extracts of pomegranate peel and apple peel can be used as alternative natural antioxidant sources to vitamin E in the diets of Japanese quails exposed to heat stress and fed a reduced crude protein diet.

Technical Cashew Nutshell Liquid in Diets of Growing Meat-Type Quails

The aim of this study was to evaluate the inclusion of technical cashew nutshell liquid (TCNSL) in European quails (Coturnix coturnix coturnix) diets from 1 to 35 days of age on the performance, carcass traits, and development of the digestive organs. 575 quails were distributed in a completely randomized design with five treatments (0%, 0.25%, 0.50%, 0.75%, and 1.00% TCNSL), five replicates, and 23 birds per experimental unit. Live performance was evaluated by weight gain, average feed intake, and feed to conversion ratio. The relative weight of the digestive organs (proventriculus, gizzard, pancreas, liver, small intestine, and large intestine), length of the small and large intestine, and carcass and parts yield (breast, wing, and leg) were determined at the end of the experimental period (35 days). The supplementation of quail diets with TCNSL did not influence live performance or carcass and parts yields. The relative weights of the proventriculus, gizzard, pancreas, small intestine, and large intestine, and the length of the small intestine and large intestine were not affected by the dietary inclusion of TCNSL. However, TCNSL supplementation had a quadratic effect (p 0.05) on liver relative weight, with the lowest relative weight predicted at 0.33% TCNSL. Quails fed 1% TCNSL showed higher liver relative weight compared with those fed the TCNSL-free diets. The dietary inclusion of up to 1% TCNSL did not influence the performance, carcass traits, or development of the digestive organs of European quails.(AU)

Supplementation of Natural Antioxidants to Reduced Crude Protein Diets for Japanese Quails Exposed to Heat Stress

The study aimed at comparing the effects of the supplementation of natural antioxidant sources to a reduced crude protein diet on the performance, carcass traits, blood parameters, liver antioxidant enzyme activities and meat lipid peroxidation of Japanese quails exposed to heat stress. A total of 640 14-day-old male Japanese quails were exposed to two different temperature treatments (TT): thermoneutral (TN) or heat stress (HS)and were fed five different dietary treatments (DTs). A normal-protein diet (SCP) was formulated according to the National Research Council (24% CP). The reduced crude protein diet (RCP) was formulated to contain 3% less protein than that of the SCP diet. Three additional diets were prepared by supplementing the RCP with200 mg/kg of -tocopherol acetate (RCP+TA200), pomegranate peel extract (RCP+PPE200) or apple peel extract (RCP+APE200). HS significantly deteriorated the growth performance of quails throughout the experiment. Quails fed the SCP and RCP+PPE200 presented higher hematocrit values. Feeding the RCP+TA200 and RCP+PPE200 diets reduced the blood heterophil/lymphocyte (H/L) ratio compared with the other diets. Quails fed the SCP, RCP+TA200, RCP+PPE200 and RCP+APE200 diets presented higher liver catalase and glutathione peroxidase activities, plasma uric acid level, and lower meat malondialdehyde value at 7days of age compared with those fed the RCP diet. In conclusion, the results show that the extracts of pomegranate peel and apple peel can be used as alternative natural antioxidant sources to vitamin E in the diets of Japanese quails exposed to heat stress and fed a reduced crude protein diet.(AU)

Exigência de proteína bruta para codornas europeias / Crude protein requirements for European quails

A precisão no atendimento das exigências nutricionais é de grande importância na produção de codornas, porém há ausência de consenso quanto às recomendações de proteína bruta (PB) para codornas de linhagens específicas para corte. O presente estudo teve como objetivo determinar a exigência de PB para codornas europeias sobre o desempenho e sobre as características de carcaça. Foi utilizado o delineamento inteiramente casualizado em esquema fatorial 5 × 2, sendo cinco níveis de PB para machos e fêmeas. Na fase inicial (1 a 21dias), foram utilizadas 1.800 codornas e níveis de PB de 20,0, 22,5, 25,0, 27,5 e 30,0%, com seis repetições contendo 30 aves cada. Na fase de crescimento (22 a 45 dias), foram usadas 1.620 codornas e níveis de PB de 17,5, 19,5, 22,0, 24,5 e 27,0%, com seis repetições contendo 27 aves cada. As dietas foram fareladas a base de milho e farelo de soja. O desempenho das codornas foi avaliado ao final de cada período, e o rendimento de carcaça no 45º dia. Aos 21 dias houve maior ganho de peso e melhor conversão alimentar, independentemente do sexo, com 25,50% e 27,06% de PB, respectivamente. No período de 22 a 45 dias, observou-se somente efeito do sexo, sendo que as fêmeas obtiveram desempenho superior. Com relação às características de carcaça, os machos obtiveram maior rendimento de carcaças (quente, fria e dorso); já as fêmeas, apresentaram maior rendimento de cortes (peito, moela e fígado).(AU)

Accuracy in meeting nutritional requirements has great importance in quail nutrition however there is a lack of consensus on crude protein (CP) recommendations specific for European quails. The present study aimed to define crude protein requirements for European quails on performance and carcass characteristics. A completely randomized design was used in a 5 × 2 factorial scheme, with five CP levels for male and female quails. In the starting phase (1 to 21 days) it was used 1,800 quails and CP levels were 20,0, 22,5, 25,0, 27,5 and 30,0%, with six replicates containing 30 birds each. In the growth phase (22 to 45 days) it was used 1.620 quails and CP levels were 17,5, 19,5, 22,0, 24,5 and 27,0%, with six replicates containing 27 birds each. Theirs d was a corn soybean based diet in grounded form. The performance of the quails was evaluated in the end of each experimental phase and carcass yield in 45 days. Weight gain and feed conversion ratio was higher for 25,50% and 27,06% respectively, regardless of gender, in 21 days. In the growth phase, it was observed just gender effect in which female quails had higher performance. For carcass characteristics, male quails obtained higher carcass and dorse yield and female quails higher breast, liver and gizzard yields.(AU)

Evaluation of herb extracts and germanium oxide as immunological adjuvants in quails ( Coturnix coturnix japonica ) / Evaluación de extractos de hierbas y el óxido de germanio como adyuvantes inmunológicos en codornices ( Coturnix coturnix japonica )

ABSTRACT Objective. The aim of present investigation was to assess the immunostimulatory activity of herb extracts from Allium sativum, Aloe arborescens and germanium oxide. Materials and methods. Quails were immunized three times orally with bovine serum albumin (BSA) in combination with the crude plant extracts and the inorganic substance which was indicated above. BSA-specific IgA antibodies in saliva and IgY antibodies in egg yolk were tested by ELISA. Results. It was discovered that the birds treated with BSA in combination with either Allium sativum or Aloe arborescens extracts or germanium oxide had higher titers of BSA-specific IgA antibodies in the saliva at the 42 day of monitoring, while the quails administered with BSA and Allium sativum or Aloe arborescens extracts or germanium oxide demonstrated higher levels of BSA-specific IgY antibodies in the egg yolk at the end of observation. Furthermore, the birds immunised with BSA alone had significantly lower immune responses to BSA than quails immunised with BSA supplemented with the herb extracts and germanium oxide. Conclusions. These data suggest that medicinal plant extracts and germanium oxide can be applied as oral adjuvants or as immunomodulators for quails.

RESUMEN Objetivo. Evaluar la actividad inmunoestimulante de extractos de hierbas de Allium sativum, Aloe arborescens y óxido de germanio. Materiales y métodos. Las codornices se inmunizaron tres veces por vía oral con albúmina de suero bovino (BSA) en combinación con los extractos vegetales crudos y la sustancia inorgánica antes indicada. Los anticuerpos IgA específicos de la BSA en la saliva y los anticuerpos IgY en la yema de huevo se analizaron mediante ELISA. Resultados. Se encontró que las aves tratadas con BSA en combinación con extractos de Allium sativum o Aloe arborescens o con óxido de germanio tenían títulos más altos de anticuerpos IgA específicos de BSA en la saliva a los 42 días de seguimiento, mientras que las codornices administradas con BSA y Allium sativum o extractos de Aloe arborescens u óxido de germanio demostraron niveles más altos de anticuerpos IgY específicos de BSA en la yema de huevo al final de la observación. Además, las aves inmunizadas sólo con BSA tuvieron respuestas inmunitarias significativamente más bajas a la BSA que las codornices inmunizadas con BSA complementadas con extractos de hierbas y óxido de germanio. Conclusiones. Estos datos sugieren que los extractos de plantas medicinales y el óxido de germanio pueden aplicarse como adyuvantes orales o como inmunomoduladores para las codornices.

Laying performance and egg quality of Japanese quails fed diets containing castor meal and enzyme complex

The objective of this study was to evaluate the effect of diets formulated with corn plus soybean meal (CSM) or with 21% autoclaved castor meal (ACM), with the addition of two enzyme complexes (EC1 and EC2), on the performance and egg quality of laying quail. Two hundred and sixteen quails were selected by egg production and weight uniformity and distributed in a completely randomized design with six treatments (in a 2 × 3 cross-factorial arrangement) and six replicates with six birds each. Three CSM and three ACM diets supplemented with EC1, EC2, or unsupplemented were established. The trial lasted three cycles of 21 days. Feed intake, laying rate, egg mass, feed conversion per egg mass, and feed conversion per dozen eggs did not differ. The use of ACM diet reduced egg (EW), yolk (YW), and eggshell (SW) weights, egg specific gravity and increased yolk color. However, EW and YW were similar among quails fed diets containing CSM and ACM when supplemented with CE1.The use of enzyme complex containing xylanase, b-glucanase, and phytase is recommended when 21% autoclaved castor mealis included in the diet of laying quails.

Laying performance and egg quality of Japanese quails fed diets containing castor meal and enzyme complex

The objective of this study was to evaluate the effect of diets formulated with corn plus soybean meal (CSM) or with 21% autoclaved castor meal (ACM), with the addition of two enzyme complexes (EC1 and EC2), on the performance and egg quality of laying quail. Two hundred and sixteen quails were selected by egg production and weight uniformity and distributed in a completely randomized design with six treatments (in a 2 × 3 cross-factorial arrangement) and six replicates with six birds each. Three CSM and three ACM diets supplemented with EC1, EC2, or unsupplemented were established. The trial lasted three cycles of 21 days. Feed intake, laying rate, egg mass, feed conversion per egg mass, and feed conversion per dozen eggs did not differ. The use of ACM diet reduced egg (EW), yolk (YW), and eggshell (SW) weights, egg specific gravity and increased yolk color. However, EW and YW were similar among quails fed diets containing CSM and ACM when supplemented with CE1.The use of enzyme complex containing xylanase, b-glucanase, and phytase is recommended when 21% autoclaved castor mealis included in the diet of laying quails.(AU)

Parasitic profiling of Japanese quails (Coturnix japonica) on two farms with conventional production system in the Amazon region / Perfil parasitário de codornas (Coturnix japonica) em duas granjas com sistema convencional de produção na Amazônia

The health monitoring and management systems of coturniculture can be deemed to be in a developmental phase when compared to the poultry industry. Studies regarding taxonomy and parasitic biology in quails (Coturnix japonica) has not been well conducted in Brazil. Most of the information is available from the autopsy case reports, in many ways the parasitic fauna of quails is still unknown. The aim of this study was to conduct a parasitological research in quails in order to contribute to ameliorate this situation. 31 quails, which were 12 months old, were used for the study. Their carcasses and viscera were sent to the Laboratory of Entomology and Tropical Diseases, INPA, Manaus/AM. The circulatory, nervous, respiratory, digestive and reproductive systems of these were studied separately. No blood parasites were found, however, nine species of endoparasites were registered which were distributed among the classes Cestoda, Nematoda and Protozoa. The helminths were distributed in the duodenum, jejunum, ileum, cecum and oviduct. The cecum was found to be the most parasitized organ and contained a wide range of parasites having three species of protozoa and three species of nematodes. Six morphotypes of Eutrichomastix globosus were recorded, and some morphotypes were hyperparasitized with sporangia Sphaerita sp. in the cytoplasm. A large number of parasites were recorded in this study, as well as the protozoan Blastocystis hominis was first being observed for quail.(AU)

A coturnicultura conta com um monitoramento sanitário e sistemas de manejo ainda em desenvolvimento quando comparado à avicultura industrial. Pesquisas de taxonomia e biologia parasitárias em codornas (Coturnix japonica) são pouco realizadas no Brasil, sendo a maioria das informações disponíveis referentes a relatos de caso em achados de necropsia, portanto, em muitos aspectos a fauna parasitária de codornas é ainda desconhecida. Este trabalho teve por objetivo realizar uma pesquisa parasitológica em codornas em fim de postura. Para pesquisa foram disponibilizadas 31 codornas com idades de 12 meses. As carcaças e suas vísceras foram encaminhadas ao Laboratório de Entomologia e Doenças Tropicais INPA, Manaus/AM. Foram estudados separadamente os sistemas circulatórios, nervoso, respiratório, digestivo e reprodutivo. Das 31 codornas examinadas nenhuma apresentou hemoparasitos, contudo, foram registradas nove espécies de endoparasitos distribuídas entre as classes Cestoda, Nematoda e protozoários. Os helmintos distribuíam-se pelo duodeno, jejuno, íleo, cecos e oviduto. O ceco foi o órgão mais parasitado e com maior diversidade de parasitas, sendo três espécies de protozoários e três de nematóides. Foram registrados seis morfotipos de Eutrichomastix globosus, sendo que, alguns morfótipos estavam hiperparasitados com esporângio Sphaerita sp. no citoplasma. Uma grande variedade de parasitos foi registrada nesta pesquisa, bem como, o protozoário Blastocystis hominis pela primeira vez sendo descrito para codornas.(AU)

Parasitic profiling of Japanese quails (Coturnix japonica) on two farms with conventional production system in the Amazon region / Perfil parasitário de codornas (Coturnix japonica) em duas granjas com sistema convencional de produção na Amazônia

The health monitoring and management systems of coturniculture can be deemed to be in a developmental phase when compared to the poultry industry. Studies regarding taxonomy and parasitic biology in quails (Coturnix japonica) has not been well conducted in Brazil. Most of the information is available from the autopsy case reports, in many ways the parasitic fauna of quails is still unknown. The aim of this study was to conduct a parasitological research in quails in order to contribute to ameliorate this situation. 31 quails, which were 12 months old, were used for the study. Their carcasses and viscera were sent to the Laboratory of Entomology and Tropical Diseases, INPA, Manaus/AM. The circulatory, nervous, respiratory, digestive and reproductive systems of these were studied separately. No blood parasites were found, however, nine species of endoparasites were registered which were distributed among the classes Cestoda, Nematoda and Protozoa. The helminths were distributed in the duodenum, jejunum, ileum, cecum and oviduct. The cecum was found to be the most parasitized organ and contained a wide range of parasites having three species of protozoa and three species of nematodes. Six morphotypes of Eutrichomastix globosus were recorded, and some morphotypes were hyperparasitized with sporangia Sphaerita sp. in the cytoplasm. A large number of parasites were recorded in this study, as well as the protozoan Blastocystis hominis was first being observed for quail.(AU)

A coturnicultura conta com um monitoramento sanitário e sistemas de manejo ainda em desenvolvimento quando comparado à avicultura industrial. Pesquisas de taxonomia e biologia parasitárias em codornas (Coturnix japonica) são pouco realizadas no Brasil, sendo a maioria das informações disponíveis referentes a relatos de caso em achados de necropsia, portanto, em muitos aspectos a fauna parasitária de codornas é ainda desconhecida. Este trabalho teve por objetivo realizar uma pesquisa parasitológica em codornas em fim de postura. Para pesquisa foram disponibilizadas 31 codornas com idades de 12 meses. As carcaças e suas vísceras foram encaminhadas ao Laboratório de Entomologia e Doenças Tropicais INPA, Manaus/AM. Foram estudados separadamente os sistemas circulatórios, nervoso, respiratório, digestivo e reprodutivo. Das 31 codornas examinadas nenhuma apresentou hemoparasitos, contudo, foram registradas nove espécies de endoparasitos distribuídas entre as classes Cestoda, Nematoda e protozoários. Os helmintos distribuíam-se pelo duodeno, jejuno, íleo, cecos e oviduto. O ceco foi o órgão mais parasitado e com maior diversidade de parasitas, sendo três espécies de protozoários e três de nematóides. Foram registrados seis morfotipos de Eutrichomastix globosus, sendo que, alguns morfótipos estavam hiperparasitados com esporângio Sphaerita sp. no citoplasma. Uma grande variedade de parasitos foi registrada nesta pesquisa, bem como, o protozoário Blastocystis hominis pela primeira vez sendo descrito para codornas.(AU)

Feeding time under performance and eggs quality of quails in production / Horário de arraçoamento sobre o desempenho e a qualidade de ovos de codornas em produção

In order to evaluate the performance and egg quality of quails on different time feeding, One hundred ninety two Japanese quail (Coturnix coturnix japonica) at 24 weeks of age were distributed in a completely randomized design with two replications and twelve treatments eight birds each. The treatments consisted of two different times of feeding at 6h and 16h. The performance was evaluated by the feed intake (g/bird/day), egg production (%), egg mass (g), feed conversion per egg mass (kg/kg ), feed conversion per dozen eggs (kg/dz) and viability (%). The egg quality was evaluated by the eggshell thickness (mm), percentage of albumen, yolk percentage and average egg weight (g). The feeding time at 16h favored the performance of Japanese quails at 26 and 34 wk of age considering egg production, egg mass and average egg weight. Thus, it is recommended to feed the quails at times that coincide with the highest egg laying intensity, which ranges from 16 to 19h.

Com o objetivo de avaliar o desempenho e a qualidade de ovos de codornas arraçoadas em diferentes horários na produção, foram utilizadas 192 codornas japonesas com 24 semanas de idade, distribuídas em um delineamento inteiramente casualizado com dois tratamentos e doze repetições de oito aves cada. Os tratamentos corresponderam a dois horários de arraçoamento: 6:00h e 16:00h. Para o desempenho foram avaliados: consumo de ração (g/ave/dia), produção de ovos (%), massa de ovos (g), conversão alimentar por massa de ovos (kg/kg), conversão alimentar por dúzia de ovos (kg/dz) e viabilidade (%); para qualidade dos ovos foram avaliados: espessura de casca (mm), porcentagem de albúmen, porcentagem de gema e peso médio dos ovos (g). O horário de arraçoamento influenciou o desempenho e a qualidade de ovos de codorna.O horário de 16 horas apresentou melhores resultados em todos os ciclos testados, exceto os ciclos que apresentaram maior temperatura, quando a qualidade dos ovos produzidos e o desempenho foram favorecidos peloarraçoamento realizado às 6 horas da manhã. Dessa forma recomenda-se o arraçoamento às 16 horas para codornas que não estejam submetidas às condições de estresse calórico.

Feeding time under performance and eggs quality of quails in production / Horário de arraçoamento sobre o desempenho e a qualidade de ovos de codornas em produção

In order to evaluate the performance and egg quality of quails on different time feeding, One hundred ninety two Japanese quail (Coturnix coturnix japonica) at 24 weeks of age were distributed in a completely randomized design with two replications and twelve treatments eight birds each. The treatments consisted of two different times of feeding at 6h and 16h. The performance was evaluated by the feed intake (g/bird/day), egg production (%), egg mass (g), feed conversion per egg mass (kg/kg ), feed conversion per dozen eggs (kg/dz) and viability (%). The egg quality was evaluated by the eggshell thickness (mm), percentage of albumen, yolk percentage and average egg weight (g). The feeding time at 16h favored the performance of Japanese quails at 26 and 34 wk of age considering egg production, egg mass and average egg weight. Thus, it is recommended to feed the quails at times that coincide with the highest egg laying intensity, which ranges from 16 to 19h.(AU)

Com o objetivo de avaliar o desempenho e a qualidade de ovos de codornas arraçoadas em diferentes horários na produção, foram utilizadas 192 codornas japonesas com 24 semanas de idade, distribuídas em um delineamento inteiramente casualizado com dois tratamentos e doze repetições de oito aves cada. Os tratamentos corresponderam a dois horários de arraçoamento: 6:00h e 16:00h. Para o desempenho foram avaliados: consumo de ração (g/ave/dia), produção de ovos (%), massa de ovos (g), conversão alimentar por massa de ovos (kg/kg), conversão alimentar por dúzia de ovos (kg/dz) e viabilidade (%); para qualidade dos ovos foram avaliados: espessura de casca (mm), porcentagem de albúmen, porcentagem de gema e peso médio dos ovos (g). O horário de arraçoamento influenciou o desempenho e a qualidade de ovos de codorna.O horário de 16 horas apresentou melhores resultados em todos os ciclos testados, exceto os ciclos que apresentaram maior temperatura, quando a qualidade dos ovos produzidos e o desempenho foram favorecidos peloarraçoamento realizado às 6 horas da manhã. Dessa forma recomenda-se o arraçoamento às 16 horas para codornas que não estejam submetidas às condições de estresse calórico.(AU)

Parasitic profiling of Japanese quails (Coturnix japonica) on two farms with conventional production system in the Amazon region

ABSTRACT: The health monitoring and management systems of coturniculture can be deemed to be in a developmental phase when compared to the poultry industry. Studies regarding taxonomy and parasitic biology in quails (Coturnix japonica) has not been well conducted in Brazil. Most of the information is available from the autopsy case reports, in many ways the parasitic fauna of quails is still unknown. The aim of this study was to conduct a parasitological research in quails in order to contribute to ameliorate this situation. 31 quails, which were 12 months old, were used for the study. Their carcasses and viscera were sent to the Laboratory of Entomology and Tropical Diseases, INPA, Manaus/AM. The circulatory, nervous, respiratory, digestive and reproductive systems of these were studied separately. No blood parasites were found, however, nine species of endoparasites were registered which were distributed among the classes Cestoda, Nematoda and Protozoa. The helminths were distributed in the duodenum, jejunum, ileum, cecum and oviduct. The cecum was found to be the most parasitized organ and contained a wide range of parasites having three species of protozoa and three species of nematodes. Six morphotypes of Eutrichomastix globosus were recorded, and some morphotypes were hyperparasitized with sporangia Sphaerita sp. in the cytoplasm. A large number of parasites were recorded in this study, as well as the protozoan Blastocystis hominis was first being observed for quail.

RESUMO: A coturnicultura conta com um monitoramento sanitário e sistemas de manejo ainda em desenvolvimento quando comparado à avicultura industrial. Pesquisas de taxonomia e biologia parasitárias em codornas (Coturnix japonica) são pouco realizadas no Brasil, sendo a maioria das informações disponíveis referentes a relatos de caso em achados de necropsia, portanto, em muitos aspectos a fauna parasitária de codornas é ainda desconhecida. Este trabalho teve por objetivo realizar uma pesquisa parasitológica em codornas em fim de postura. Para pesquisa foram disponibilizadas 31 codornas com idades de 12 meses. As carcaças e suas vísceras foram encaminhadas ao Laboratório de Entomologia e Doenças Tropicais INPA, Manaus/AM. Foram estudados separadamente os sistemas circulatórios, nervoso, respiratório, digestivo e reprodutivo. Das 31 codornas examinadas nenhuma apresentou hemoparasitos, contudo, foram registradas nove espécies de endoparasitos distribuídas entre as classes Cestoda, Nematoda e protozoários. Os helmintos distribuíam-se pelo duodeno, jejuno, íleo, cecos e oviduto. O ceco foi o órgão mais parasitado e com maior diversidade de parasitas, sendo três espécies de protozoários e três de nematóides. Foram registrados seis morfotipos de Eutrichomastix globosus, sendo que, alguns morfótipos estavam hiperparasitados com esporângio Sphaerita sp. no citoplasma. Uma grande variedade de parasitos foi registrada nesta pesquisa, bem como, o protozoário Blastocystis hominis pela primeira vez sendo descrito para codornas.