Potential and restrictions of Poincianella pyramidalis (Tul.) L. P. Queiroz as native forage in the Brazilian semi-arid region

Poincianella pyramidalis (catingueira) is a endemic plant of the Caatinga, selected by animals grazing on native pasture. With the aim of evaluating characteristics indicative of its nutritional quality, 10 plants were selected and identified, sampled at five different ages, were used to determine dry matter (DM), crude protein (CP), neutral detergent fibre (NDF), mineral matter (MM), DM degradability (Deg DM), NDF degradability (Deg NDF) and in situ and in vitro leaf-tissue degradability. Phytochemical prospection was performed, and 1H and 13C nuclear magnetic resonance applied to detect the presence of secondary compounds. The data were submitted to analysis of variance and Tukeys test at 5%, and correlation analysis was carried out on the variables for leaf maturity in days. The levels of CP, NDF and Deg NDF showed a negative correlation with the increases in leaf age. Leaf-tissue degradation was restricted due to a physical barrier developed in the leaf fragments, which can be attributed to plant defence mechanisms. The in situ degradability of the cell wall components decreased with the increase in leaf age. The high levels of tannins and lignin, and the strong presence of flavonoids, should be considered for their anti-nutritional and pharmacological potential.(AU)

Potential and restrictions of Poincianella pyramidalis (Tul.) L. P. Queiroz as native forage in the Brazilian semi-arid region

Poincianella pyramidalis (catingueira) is a endemic plant of the Caatinga, selected by animals grazing on native pasture. With the aim of evaluating characteristics indicative of its nutritional quality, 10 plants were selected and identified, sampled at five different ages, were used to determine dry matter (DM), crude protein (CP), neutral detergent fibre (NDF), mineral matter (MM), DM degradability (Deg DM), NDF degradability (Deg NDF) and in situ and in vitro leaf-tissue degradability. Phytochemical prospection was performed, and 1H and 13C nuclear magnetic resonance applied to detect the presence of secondary compounds. The data were submitted to analysis of variance and Tukey’s test at 5%, and correlation analysis was carried out on the variables for leaf maturity in days. The levels of CP, NDF and Deg NDF showed a negative correlation with the increases in leaf age. Leaf-tissue degradation was restricted due to a physical barrier developed in the leaf fragments, which can be attributed to plant defence mechanisms. The in situ degradability of the cell wall components decreased with the increase in leaf age. The high levels of tannins and lignin, and the strong presence of flavonoids, should be considered for their anti-nutritional and pharmacological potential.

Maniçoba hay or silage replaces Tifton 85 hay in spineless cactus diets for sheep

The aim of this study was to evaluate the replacement of Tifton 85 hay (Cynodon spp.) by maniçoba hay or silage (Manihot glaziovii Muell. Arg) on sheep intake and performance. Twenty-four male Santa Ines animals were used, with initial body weight of 19.77 ± 1.95 kg and average age of 160 days. The animals were distributed in three treatments (Tifton 85 hay-TH, Maniçoba hay-MH and Maniçoba silage-MS), arranged in a randomized blocks design, with 8 replicates per treatment. The feedlot period lasted for 71 days. The means of the variables were tested by Tukeys test at 5% probability. Sheep fed MH presented higher dry matter intake (p > 0.05) than those fed TH (1.17 kg day-1 vs 1.06 kg day-1). Neutral detergent fiber intake was higher (p > 0.05) for MH-fed sheep (0.394 kg day-1) when compared to MS (0.340 kg day-1). The digestibility of total carbohydrates was higher (p > 0.05) for MH diet (0.71 g kg-1) than TH (0.67 g kg-1). The average daily gain and body weight at slaughter did not differ (p > 0.05) among treatments. Maniçoba hay or silage can replace Tifton 85 hay in sheep diets.(AU)

Maniçoba hay or silage replaces Tifton 85 hay in spineless cactus diets for sheep

The aim of this study was to evaluate the replacement of Tifton 85 hay (Cynodon spp.) by maniçoba hay or silage (Manihot glaziovii Muell. Arg) on sheep intake and performance. Twenty-four male Santa Ines animals were used, with initial body weight of 19.77 ± 1.95 kg and average age of 160 days. The animals were distributed in three treatments (Tifton 85 hay-TH, Maniçoba hay-MH and Maniçoba silage-MS), arranged in a randomized blocks design, with 8 replicates per treatment. The feedlot period lasted for 71 days. The means of the variables were tested by Tukeys test at 5% probability. Sheep fed MH presented higher dry matter intake (p > 0.05) than those fed TH (1.17 kg day-1 vs 1.06 kg day-1). Neutral detergent fiber intake was higher (p > 0.05) for MH-fed sheep (0.394 kg day-1) when compared to MS (0.340 kg day-1). The digestibility of total carbohydrates was higher (p > 0.05) for MH diet (0.71 g kg-1) than TH (0.67 g kg-1). The average daily gain and body weight at slaughter did not differ (p > 0.05) among treatments. Maniçoba hay or silage can replace Tifton 85 hay in sheep diets.

Desempenho produtivo e econômico de cordeiros de diferentes genótipos terminados em confinamento

SUMMARY The objective of this research was to evaluate the performance and gross profit margin of feedlot lambs of different genotypes feedlot. Thirty kids non-castrated were used, being 10 Dorper x undefined breed, 10 Santa Inês x undefined breed and 10 undefined breed, with an average of 150 days of age and average weight of 19.31± 2.6 kg gat baseline, feedlot for 63 days. We used a total mixed ration containing 15.5% crude protein and 2.58 Mcal / kg DM. The genotypes of crossbred lambs Dorper and Santa Inês obtained better results than the final weight, with higher body development during the period of feedlot. No difference was observed between the intake of dry matter and water of genotypes. The total weight gains, feed conversion and daily suffered genotype influence the crossbred lambs Santa Inês and Dorper behaved similarly. The crossbred lambs of Dorper undefined breed had greater final body. The crossbred lambs Dorper x undefined breed and Santa Ines x SPRD are recommended for termination in confinement, with similar biological and economic performance, and a meat production alternative in the semiarid Northeast.

RESUMO Objetivou-se avaliar o desempenho produtivo e a margem bruta de lucro de cordeiros de diferentes genótipos terminados em confinamento. Foram utilizados 30 cordeiros, sendo 10 ½ Dorper ½ Sem Padrão Racial Definido (SPRD), 10 ½ Santa Inês ½ SPRD e 10 SPRD, com idade média de 150 dias e peso vivo médio inicial de 19,31 ± 2,6 kg. Foi utilizada uma dieta completa, contendo 15,5% de PB e 2,58 Mcal/kg MS de EM. Os mestiços ½ Dorper½ SPRD e ½ Santa Inês ½ SPRD obtiveram melhores resultados em relação ao peso final, apresentando maior acúmulo tecidual durante o período de confinamento. Não foi observado diferença entre o consumo de matéria seca e água em função dos genótipos. Os mestiços de Dorper x SPRD e Santa Inês x SPRD apresentaram maior ganho de peso diário, total e melhor conversão alimentar. Os cordeiros mestiços de Dorperx SPRD apresentaram maior escore corporal final. Os cordeiros mestiços Dorper x SPRD e Santa Inês x SPRD são recomendados para a terminação em confinamento, apresentando desempenho biológico e econômico semelhantes, sendo uma alternativa de produção de carne no Semiárido Nordestino.

Productive and economic performance of different a genotype of lambs finished in feedlot / Desempenho produtivo e econômico de cordeiros de diferentes genótipos terminados em confinamento

The objective of this research was to evaluate the performance and gross profit margin of feedlot lambs of different genotypes feedlot. Thirty kids non-castrated were used, being 10 Dorper x undefined breed, 10 Santa Inês x undefined breed and 10 undefined breed, with an average of 150 days of age and average weight of 19.31± 2.6 kg gat baseline, feedlot for 63 days. We used a total mixed ration containing 15.5% crude protein and 2.58 Mcal / kg DM. The genotypes of crossbred lambs Dorper and Santa Inês obtained better results than the final weight, with higher body development during the period of feedlot. No difference was observed between the intake of dry matter and water of genotypes. The total weight gains, feed conversion and daily suffered genotype influence the crossbred lambs Santa Inês and Dorper behaved similarly. The crossbred lambs of Dorper undefined breed had greater final body. The crossbred lambs Dorper x undefined breed and Santa Ines x SPRD are recommended for termination in confinement, with similar biological and economic performance, and a meat production alternative in the semiarid Northeast.(AU)

Objetivou-se avaliar o desempenho produtivo e a margem bruta de lucro de cordeiros de diferentes genótipos terminados em confinamento. Foram utilizados 30 cordeiros, sendo 10 ½ Dorper ½ Sem Padrão Racial Definido (SPRD), 10 ½ Santa Inês ½ SPRD e 10 SPRD, com idade média de 150 dias e peso vivo médio inicial de 19,31 ± 2,6 kg. Foi utilizada uma dieta completa, contendo 15,5% de PB e 2,58 Mcal/kg MS de EM. Os mestiços ½ Dorper½ SPRD e ½ Santa Inês ½ SPRD obtiveram melhores resultados em relação ao peso final, apresentando maior acúmulo tecidual durante o período de confinamento. Não foi observado diferença entre o consumo de matéria seca e água em função dos genótipos. Os mestiços de Dorper x SPRD e Santa Inês x SPRD apresentaram maior ganho de peso diário, total e melhor conversão alimentar. Os cordeiros mestiços de Dorperx SPRD apresentaram maior escore corporal final. Os cordeiros mestiços Dorper x SPRD e Santa Inês x SPRD são recomendados para a terminação em confinamento, apresentando desempenho biológico e econômico semelhantes, sendo uma alternativa de produção de carne no Semiárido Nordestino.(AU)

Productive and economic performance of different a genotype of lambs finished in feedlot / Desempenho produtivo e econômico de cordeiros de diferentes genótipos terminados em confinamento

The objective of this research was to evaluate the performance and gross profit margin of feedlot lambs of different genotypes feedlot. Thirty kids non-castrated were used, being 10 Dorper x undefined breed, 10 Santa Inês x undefined breed and 10 undefined breed, with an average of 150 days of age and average weight of 19.31± 2.6 kg gat baseline, feedlot for 63 days. We used a total mixed ration containing 15.5% crude protein and 2.58 Mcal / kg DM. The genotypes of crossbred lambs Dorper and Santa Inês obtained better results than the final weight, with higher body development during the period of feedlot. No difference was observed between the intake of dry matter and water of genotypes. The total weight gains, feed conversion and daily suffered genotype influence the crossbred lambs Santa Inês and Dorper behaved similarly. The crossbred lambs of Dorper undefined breed had greater final body. The crossbred lambs Dorper x undefined breed and Santa Ines x SPRD are recommended for termination in confinement, with similar biological and economic performance, and a meat production alternative in the semiarid Northeast.

Objetivou-se avaliar o desempenho produtivo e a margem bruta de lucro de cordeiros de diferentes genótipos terminados em confinamento. Foram utilizados 30 cordeiros, sendo 10 ½ Dorper ½ Sem Padrão Racial Definido (SPRD), 10 ½ Santa Inês ½ SPRD e 10 SPRD, com idade média de 150 dias e peso vivo médio inicial de 19,31 ± 2,6 kg. Foi utilizada uma dieta completa, contendo 15,5% de PB e 2,58 Mcal/kg MS de EM. Os mestiços ½ Dorper½ SPRD e ½ Santa Inês ½ SPRD obtiveram melhores resultados em relação ao peso final, apresentando maior acúmulo tecidual durante o período de confinamento. Não foi observado diferença entre o consumo de matéria seca e água em função dos genótipos. Os mestiços de Dorper x SPRD e Santa Inês x SPRD apresentaram maior ganho de peso diário, total e melhor conversão alimentar. Os cordeiros mestiços de Dorperx SPRD apresentaram maior escore corporal final. Os cordeiros mestiços Dorper x SPRD e Santa Inês x SPRD são recomendados para a terminação em confinamento, apresentando desempenho biológico e econômico semelhantes, sendo uma alternativa de produção de carne no Semiárido Nordestino.

Desempenho produtivo e econômico de cordeiros de diferentes genótipos terminados em confinamento

SUMMARY The objective of this research was to evaluate the performance and gross profit margin of feedlot lambs of different genotypes feedlot. Thirty kids non-castrated were used, being 10 Dorper x undefined breed, 10 Santa Inês x undefined breed and 10 undefined breed, with an average of 150 days of age and average weight of 19.31± 2.6 kg gat baseline, feedlot for 63 days. We used a total mixed ration containing 15.5% crude protein and 2.58 Mcal / kg DM. The genotypes of crossbred lambs Dorper and Santa Inês obtained better results than the final weight, with higher body development during the period of feedlot. No difference was observed between the intake of dry matter and water of genotypes. The total weight gains, feed conversion and daily suffered genotype influence the crossbred lambs Santa Inês and Dorper behaved similarly. The crossbred lambs of Dorper undefined breed had greater final body. The crossbred lambs Dorper x undefined breed and Santa Ines x SPRD are recommended for termination in confinement, with similar biological and economic performance, and a meat production alternative in the semiarid Northeast.

RESUMO Objetivou-se avaliar o desempenho produtivo e a margem bruta de lucro de cordeiros de diferentes genótipos terminados em confinamento. Foram utilizados 30 cordeiros, sendo 10 ½ Dorper ½ Sem Padrão Racial Definido (SPRD), 10 ½ Santa Inês ½ SPRD e 10 SPRD, com idade média de 150 dias e peso vivo médio inicial de 19,31 ± 2,6 kg. Foi utilizada uma dieta completa, contendo 15,5% de PB e 2,58 Mcal/kg MS de EM. Os mestiços ½ Dorper½ SPRD e ½ Santa Inês ½ SPRD obtiveram melhores resultados em relação ao peso final, apresentando maior acúmulo tecidual durante o período de confinamento. Não foi observado diferença entre o consumo de matéria seca e água em função dos genótipos. Os mestiços de Dorper x SPRD e Santa Inês x SPRD apresentaram maior ganho de peso diário, total e melhor conversão alimentar. Os cordeiros mestiços de Dorperx SPRD apresentaram maior escore corporal final. Os cordeiros mestiços Dorper x SPRD e Santa Inês x SPRD são recomendados para a terminação em confinamento, apresentando desempenho biológico e econômico semelhantes, sendo uma alternativa de produção de carne no Semiárido Nordestino.

Feno de maniçoba na alimentação de caprinos Moxotó / Maniçoba hay feeding Moxotó goats

A utilização de forrageiras nativas da Caatinga configura-se em alternativa para os sistemas de produção sustentáveis no Nordeste brasileiro. Objetivou-se avaliar a substituição total do feno de Tifton 85 pelo feno de Maniçoba, em dietas a base de palma forrageira, sobre os componentes do peso corporal de caprinos Moxotó. Os animais eram machos não castrados, pesando inicialmente 21,67±3,92 kg, confinados em baias individuais e abatidos após 58 dias de confinamento. O tipo de feno não influenciou (P>0,05) nenhuma das características de carcaça dos caprinos. Os animais apresentaram peso corporal ao abate médio de 21,83 kg e pesos médios de carcaça quente e fria de 9,83 kg e 9,21 kg, respectivamente. Os rendimentos de carcaça também não foram influenciados pelo tipo de feno (P>0,05) e apresentaram médias de 44,98% para carcaça quente e 42,11% para carcaça fria. A área de olho de lombo (AOL) e o índice de compacidade da carcaça apresentaram médias de 6,19 cm² e 0,159 kg cm-1, respectivamente, e não sofreram influência do tipo de feno na dieta. Não foi observada diferença (P>0,05) entre as dietas para peso de órgãos e vísceras. A dieta Tifton 85 proporcionou maiores (P 0,05) pesos de pele. A substituição do feno de Tifton 85 pelo feno de Maniçoba, na dieta de caprinos Moxotó, não altera nenhum componente da carcaça, contudo em relação aos constituintes não carcaça, reduz o peso da pele.(AU)

The use of native forages Caatinga set up as an alternative for the sustainable production systems in Northeast Brazil. This study aimed to evaluate the substitution of Tifton 85 hay by Maniçoba hay in the components of the body weight of Moxotó goats. The animals were steers, initially weighing 21.67±3.92 kg, housed in individual pens and slaughtered at 58 days of confinement. The type of hay did not influence (P>0.05) any of the carcass traits. The animals presented for slaughter average body weight of 21.83 kg, and average weights of hot and cold carcass of 9.83 kg and 9.21 kg, respectively. The carcass were not affected by the type of hay (P>0.05) and average 44.98% and 42.11% for hot cold carcass. The loin eye area (LEA) and carcass compactness index had averages of 6.19 cm² and 0.159 kg cm-1, respectively, and did not influence the type of hay in the diet. There was no difference (P> 0.05) between diets for weight of organs and viscera. The diet Tifton 85 yielded higher (P 0.05) weights skin. Replacement of Tifton 85 hay by Maniçoba hay, the diet of Moxotó goats does not alter carcass component, but reduces the weight of the skin.(AU)

RESPOSTA DA VEGETAÇÃO HERBÁCEA EM ÁREA DE CAATINGA MANIPULADA COM CONTROLE DAS REBROTAS DA JUREMA PRETA (Mimosa tenuiflora (WILLD.) POIR.)

O bioma Caatinga abriga uma impressionante biodiversidade florística, e representa a quarta maior área coberta por vegetação única no Brasil com potencial de produção de forragem, nos estratos arbóreo, arbustivo e herbáceo. Objetivou-se com esse trabalho avaliar o efeito do manejo silvipastoril da caatinga com o controle do número de rebrotas da jurema preta sobre a vegetação herbácea e serapilheira. O experimento foi conduzido na Fazenda Lameirão pertencente ao Centro de Saúde e Tecnologia Rural da Universidade Federal de Campina Grande, localizada no Município de Santa Terezinha-PB, Brasil. Utilizou-se uma área de quatro hectares, dividida em quatro piquetes com aproximadamente um hectare cada, e subdivididos em quatro parcelas de 45 m x 45 m, totalizando dezesseis parcelas. Após o corte de uniformização da vegetação lenhosa, foi implantado o manejo silvipastoril referente ao controle das rebrotas da jurema preta em 2015, em 4 níveis: T0 = testemunha, permitindo o crescimento de todas as rebrotas da jurema e T1, T2 e T3, permitindo o crescimento de 1, 2 e 3 rebrotas de jurema preta, respectivamente. O delineamento utilizado foi em blocos casualizados (DBC) com 4 tratamentos e 4 repetições. Para a coleta de dados de todas as variáveis, utilizou-se moldura de ferro (unidade amostral) com dimensões de 1,00 x 0,25 m. Foram realizadas quatro coletas durante o período chuvoso (março, abril, maio e junho de 2019) e duas no período seco (setembro e outubro de 2019). Nesses períodos, foram coletados dados referentes à presença das espécies herbáceas em cada parcela e à cobertura do solo pelas espécies herbáceas. Para os dados de frequência foi feita uma estatística descritiva e multivariada para análise de conglomerados, utilizando-se distância de Jaccard com ligação média, tendo finalidade de identificar grupos similares de espécies. E para cobertura do solo utilizou-se o teste de Tukey ao nível de 5%. Esses dados foram comparados com os dados das coletas dos anos anteriores (2016, 2017 e 2018). Além disso, foram coletadas amostras para determinar a disponibilidade e a composição química da matéria seca (kg de MS/ha) da fitomassa de pé da vegetação herbácea e da serapilheira. Esses dados foram comparados com os dados coletados na mesma área em 2016 (início da coleta de dados). Em todas as coletas foram retiradas amostras de gramíneas, malva, outras dicotiledôneas herbáceas e serapilheira, que foram pesadas frescas e secas em estufa no Laboratório de Nutrição Animal (LANA). Os dados de biomassa fresca e seca foram submetidos à análise de variância empregando-se o programa estatístico SAS (2007), e as médias foram comparadas pelo teste de Tukey ao nível de 5% de probabilidade. Em todos os períodos avaliados as espécies que mais se destacaram foram Mesosphaerum suaveolens (L.) Kuntze), Sida cordifolia L, Axonopus purpusii (Mez) Chase, mas também com o passar dos anos houve surgimento de novas espécies na área. De um modo geral, os resultados indicam recuperação da área, com a presença de espécies indicadoras de sucessão progressiva, como Stylosanthes sp, Phaseolus lathyroides L. Centrosema sp. Axonopus purpusii. (Mez) Chase. Com isso houve aumento na cobertura

The caatinga biome refuge an impressive biodiversity floristic, and represents the fourth biggest covered area by unic vegetation in Brazil with potential of hardware production, on arboreal strata, shrubby and herbaceous. Aimed whith this work, evaluate the efect of silvopastoral management of caatinga whith the control of the number of regrowth of jurema preta over the herbaceous vegetation and litter. The experiment was conduzed in Lameirão Farm belonging of health's center and rural tecnology of Federal University of Campina Grande, localizated in municipality of Santa Terezinha - PB, Brazil. Was used an area of four hectare, divided in four pickets with approximately one hectare each, and subdivided in four plots os 45m x 45m, totalizing sixteen plots. After cutting the uniformity of woody vegetation, was implanted the silvipastoril management referring of control of rebrotas of jurema preta in 2015, in four levels: T0 = witness, allowing the growth of all Jurema's regrowth and T1, T2 and T3, allowing the growth of 1, 2 and 3 regrowths of jurema preta, respectively. The outline used was in random blocks (DBC) with four treatments and four repetitions. For the data collect of all the variables, was used iron frame (sampling unit) with dimensions of 1,00 x 0,25m. Was realized four collections during the rainy season (march, april, may, june of 2019) and two on dry season (september and october of 2019). In this periods, was collected data regarding the presence of herbaceous species in each parcel and ground cover by herbaceous species. For the data of frequency was made a descriptive statistics and multivariate for analyze of conglomerates, using Jaccard distance with medium connection, having goal to identificate similar groups of species. And to ground cover used the test of Tukey at the level of 5%. These data was compared with the data of collections of previous years (2016, 2017 and 2018). Besides that, whats collected samples to demonster the disponibility and the chemical composition of the dry matter (kg of DM/ha) of phytomass of foot of herbaceous vegetation and of litter. These data was compared with the data collectd in the same area in 2016 (start of data collection). In all of collections samples were taken of grasses, mauve, others herbaceous eudicotiledoneas and litter, that were weighed fresh and dried in greenhouse in laboratory of animal nutrition (LANA). The data of fresh biomass and dry were submitted to analysis of variance using the statistical program SAS (2007), and the avarage were compared by the Tukey's test in the level of 5% of probability. In all of evaluated periods the species that more stand out were Mesosphaerum suaveolens (L.) Kuntze), Sida cordifolia L, Axonopus purpusii (Mez) Chase, but also with the over the years there was an appearance of news species in area. In a geral mode, the results indicate recuperation of area, with presence of indicator species of progressive succession, like Stylosanthes sp, Phaseoulus lathyroides L. Centrosema sp. Axonopus purpusii. (Mez) Chase. With this, there was increased in ground coverr and disponibility of dry matter of phytomass of foot and litter.