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1.
Vet. Not. (Online) ; 25(2): 161-171, jul.-dez. 2019. tab
Artigo em Português | VETINDEX | ID: biblio-1502511

Resumo

The study was conducted aiming to evaluate three commercial strains of broiler chickens about their production performance and carcass yield up to 42 days of age. Three thousand day-old chicks were alocated in a randomized 3x2 factorial design, with three commercial strains (Ross AP95, Cobb e Hubbard) and two sex, with ten replicates per treatment. The chicks were distributed in 60 metal boxes of 1,58m x 2,61m x 0.7m. At 42 days a bird per box was identified and send to slaughter house, totaling 60 birds, to evaluate the arcass yield. The commercial strains Cobb and Hubbard did not differ for the average weight parameters, gain mean weight, productive efficiency index and daily weight gain, with statistically superior results to the commercial strain Ross. To feed conversion, commercial strain Hubbard showed statistically similar results to the Cobb, which in turn was statistically equal to the commercial strain Ross. For the income of chicken cuts the three commercial strains did not differ. For the yield of thigh, drumstick and abdominal fat there was a significant difference between male and female sex.


O trabalho foi conduzido objetivando-se avaliar o desempenho zootécnico e rendimento de carcaça de três linhagens de frango de corte até 42 dias de idade. Foram utilizados 3000 pintos de um dia de idade, sexados, distribuídos em um delineamento experimental inteiramente casualizado em esquema fatorial 3x2 (linhagem x sexo), sendo três linhagens (Ross AP95, Cobb e Hubbard) e dois sexos, com dez repetições por tratamento. Os pintos foram distribuídos em 60 boxes metálicos de 1,58m x 2,61m x 0,7m. Aos 42 dias de idade uma ave por box foi identificada e enviada para o frigorífico, totalizando 60 aves, para avaliação do rendimento de carcaça. As linhagens Cobb e Hubbard não diferiram entre si para os parâmetros peso médio, ganho médio de peso, índice de eficiência produtiva e ganho de peso diário, apresentando resultados estatisticamente superiores aos da linhagem Ross. Para conversão alimentar a linhagem Hubbard apresentou resultado estatisticamente igual ao da linhagem Cobb, que por sua vez foi estatisticamente igual ao da linhagem Ross. Para o rendimento de cortes de frango as três linhagens não diferiram entre si. Houve diferença significativa entre macho e fêmea para rendimento de coxa-sobrecoxa e gordura abdominal.


Assuntos
Animais , Aumento de Peso , Carne , Fatores Sexuais , Galinhas , Linhagem
2.
Vet. Not. ; 25(2): 161-171, 2019. tab
Artigo em Português | VETINDEX | ID: vti-25944

Resumo

The study was conducted aiming to evaluate three commercial strains of broiler chickens about their production performance and carcass yield up to 42 days of age. Three thousand day-old chicks were alocated in a randomized 3x2 factorial design, with three commercial strains (Ross AP95, Cobb e Hubbard) and two sex, with ten replicates per treatment. The chicks were distributed in 60 metal boxes of 1,58m x 2,61m x 0.7m. At 42 days a bird per box was identified and send to slaughter house, totaling 60 birds, to evaluate the arcass yield. The commercial strains Cobb and Hubbard did not differ for the average weight parameters, gain mean weight, productive efficiency index and daily weight gain, with statistically superior results to the commercial strain Ross. To feed conversion, commercial strain Hubbard showed statistically similar results to the Cobb, which in turn was statistically equal to the commercial strain Ross. For the income of chicken cuts the three commercial strains did not differ. For the yield of thigh, drumstick and abdominal fat there was a significant difference between male and female sex.(AU)


O trabalho foi conduzido objetivando-se avaliar o desempenho zootécnico e rendimento de carcaça de três linhagens de frango de corte até 42 dias de idade. Foram utilizados 3000 pintos de um dia de idade, sexados, distribuídos em um delineamento experimental inteiramente casualizado em esquema fatorial 3x2 (linhagem x sexo), sendo três linhagens (Ross AP95, Cobb e Hubbard) e dois sexos, com dez repetições por tratamento. Os pintos foram distribuídos em 60 boxes metálicos de 1,58m x 2,61m x 0,7m. Aos 42 dias de idade uma ave por box foi identificada e enviada para o frigorífico, totalizando 60 aves, para avaliação do rendimento de carcaça. As linhagens Cobb e Hubbard não diferiram entre si para os parâmetros peso médio, ganho médio de peso, índice de eficiência produtiva e ganho de peso diário, apresentando resultados estatisticamente superiores aos da linhagem Ross. Para conversão alimentar a linhagem Hubbard apresentou resultado estatisticamente igual ao da linhagem Cobb, que por sua vez foi estatisticamente igual ao da linhagem Ross. Para o rendimento de cortes de frango as três linhagens não diferiram entre si. Houve diferença significativa entre macho e fêmea para rendimento de coxa-sobrecoxa e gordura abdominal.(AU)


Assuntos
Animais , Galinhas , Carne , Aumento de Peso , Fatores Sexuais , Linhagem
3.
Sci. agric ; 73(6): 520-524, 2016. tab, graf
Artigo em Inglês | VETINDEX | ID: biblio-1497605

Resumo

Despite the widespread distribution of the Cassava common mosaic virus (CsCMV) in Brazil, little is known about the losses it causes in yield. The effect of CsCMV on different varieties was evaluated by reference to several agronomic traits. Four field trials were established in 2012/2013 and 2013/2014 using six varieties of cassava. Following mechanical inoculation with CsCMV, the presence of the virus was confirmed using the ELISA assay. The evaluated traits were plant height (PH), dry matter content (DMC), harvest index (HI), aerial part yield (APY), root yield (RoY), and starch yield (StY) in both inoculated and non-inoculated plants. Overall, the presence of the virus contributed little to the reduction in PH, HI, and DMC across the varieties, with PH being significantly reduced by 9.2 and 7.0 % in the BGM0212 and BRS Kiriris varieties, respectively. In contrast, APY, RoY, and StY were reduced by 30.2, 29.3, and 30.0 %, in the virus-infected plants respectively. While the BRS Kiriris and BRS Jari varieties suffered the highest reductions overall and were considered highly susceptible to CsCMV, none of the traits suffered reductions in the inoculated BRS Formosa plants. Although RoY and StY were reduced in inoculated plants of BRS Tapioqueira, crop yield for this variety was the highest. Thus, BRS Formosa and BRS Tapioqueira exhibited tolerance against CsCMV, which warrants further investigation.


Assuntos
Doenças das Plantas/virologia , Interações Hospedeiro-Patógeno , Manihot/virologia , Noxas , Vírus do Mosaico , Agricultura , Produtos Agrícolas
4.
Sci. agric. ; 73(6): 520-524, 2016. tab, graf
Artigo em Inglês | VETINDEX | ID: vti-684155

Resumo

Despite the widespread distribution of the Cassava common mosaic virus (CsCMV) in Brazil, little is known about the losses it causes in yield. The effect of CsCMV on different varieties was evaluated by reference to several agronomic traits. Four field trials were established in 2012/2013 and 2013/2014 using six varieties of cassava. Following mechanical inoculation with CsCMV, the presence of the virus was confirmed using the ELISA assay. The evaluated traits were plant height (PH), dry matter content (DMC), harvest index (HI), aerial part yield (APY), root yield (RoY), and starch yield (StY) in both inoculated and non-inoculated plants. Overall, the presence of the virus contributed little to the reduction in PH, HI, and DMC across the varieties, with PH being significantly reduced by 9.2 and 7.0 % in the BGM0212 and BRS Kiriris varieties, respectively. In contrast, APY, RoY, and StY were reduced by 30.2, 29.3, and 30.0 %, in the virus-infected plants respectively. While the BRS Kiriris and BRS Jari varieties suffered the highest reductions overall and were considered highly susceptible to CsCMV, none of the traits suffered reductions in the inoculated BRS Formosa plants. Although RoY and StY were reduced in inoculated plants of BRS Tapioqueira, crop yield for this variety was the highest. Thus, BRS Formosa and BRS Tapioqueira exhibited tolerance against CsCMV, which warrants further investigation.(AU)


Assuntos
Vírus do Mosaico , Manihot/virologia , Noxas , Interações Hospedeiro-Patógeno , Doenças das Plantas/virologia , Produtos Agrícolas , Agricultura
5.
Acta sci., Anim. sci ; 21: 627-632, 1999.
Artigo em Português | VETINDEX | ID: vti-762876

Resumo

This experiment was carried out at Animal Reproduction Laboratory and Equine Section of the Experimental Farm of Universidade Estadual de Maringá, in the period of September 97 trough March 98. The objective was to study the effects of two extenders on artificial insemination (AI) of Percheron and Breton breeding mares. One Percheron stallion and sixteen mares were used. The mares were inseminated with fresh semen diluted in two extenders formulated with skimmed powder cow milk (LS) and coconut water (AW) on the day ovarian follicles with 3.5 cm of diameter were observed. They. were alloted in a completely randomized design with eight animals in each treatments. The data were analyzed utilizing chi-square test and variance analyses. The analysis of the data showed there were no difference (P > 0.05) between the treatments regarding pregnancy rate of the mares in first, second and third estrous cycles, number of fecund and not fecund artificial inseminations, pregnancy/AI, total pregnancy rate, number of AI/pregnancy, progressive motility and vigor of spermatozoa of semen. The result led to the conclusion that both extenders were efficient in the AI of these breed mares, utilizing fresh semen.


O experimento foi conduzido no Laboratório de Reprodução Animal e no Setor de Eqüideocultura da Fazenda Experimental da Universidade Estadual de Maringá, no período de setembro/97 a março/98, com o objetivo de testar os efeitos de dois diluidores na inseminação artificial de éguas das raças Percheron e Bretão. Foi utilizado um garanhão da raça Percheron e dezesseis éguas, as quais foram inseminadas com sêmen fresco, diluído em meios formulados à base de leite de vaca em pó desnatado (LD) e à base de água de côco (AC). As inseminações foram realizadas quando se observaram folículos ovarianos com 3,5 cm de diâmetro. Utilizou-se o delineamento inteiramente casualizado, com oito éguas em cada tratamento. Para as análises utilizou-se o teste do qui-quadrado e análise de variância. A análise dos dados mostrou que não houve diferença (P > 0,05) dos tratamentos sobre o índice de prenhez das éguas no primeiro, segundo e terceiro ciclos estrais, no número de inseminações artificiais fecundas e não-fecundas, na prenhez/inseminação artificial (IA), no índice de prenhez total, na IA/prenhez e entre a motilidade progressiva e o vigor dos espermatozóides após diluição. Com base nos resultados, pode-se concluir que os dois meios foram eficientes na inseminação artificial dessas raças de éguas, utilizando-se o sêmen fresco.

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