Respostas fisiológicas e desempenho produtivo de ovinos em pasto suplementados com diferentes fontes proteicas

Oliveira, Pablo Teixeira Leal de; Turco, Sílvia Helena Nogueira; Voltolini, Tadeu Vinhas; Araújo, Gherman Garcia Leal de; Pereira, L. G. R.; Mistura, Claúdio; Menezes, Daniel Ribeiro

doi:10.1590/s0034-737x2011000200009

Cited by 8 publications

(5 citation statements)

References 18 publications

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“…The enviromental temperature in semi-arid conditions, as expected and reported by several authors (Santos et al, 2005(Santos et al, , 2007Silva et al, 2012Silva et al, , 2013b, was higher (P<0.05) in the afternoon, probably due to the higher incidence and intensity of sunlight at this time, showing a temperature range of 7.8 °C. These values, when compared to the established as thermal comfort zone for adult sheep, where according to Baêta and Souza (2010), is in the range 15-30 °C, and the critical temperature above 35 °C, which characterizes a situation of thermal stress to the driving conditions of the experiment, as is confirm by Oliveira et al (2011).…”

Section: Resultssupporting

confidence: 72%

Thermoregulatory Traits of Native Sheep in Pregnancy and Supplemented in Grazing System

Pereira¹,

Bonifácio²,

Santos³

et al. 2014

JAS

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Current assay evaluates thermoregulatory characteristics of native sheep in pregnancy and supplemented in grazing system. Were used 24 multiparous lactating ewes, 12 Santa Inês and 12 Morada Nova, with an average weight of 52.6 and 31.3 kg, respectively, were randomly distributed in a completely randomized split-split plot design. Physiological parameters such as heart rate (HR), respiratory rate (RR) and rectal temperature (RT) were measured in that order during the morning and afternoon, 06-07 and 13-14 h, respectively, every seven days, totaling 10 samples. The environmental temperature was higher (P<0.05) in the afternoon, probably due to the higher incidence and intensity of sunlight at this time, with index globe temperature and humidity presenting values that characterize an environment of danger to animal production, characteristics of the semiarid. Effect (P<0.05) turn and race on the thermoregulatory characteristics of the sheep were found, showing unfavorable conditions in the afternoon with greater intensity of use of heat dissipation mechanisms by Santa Inês ewes. Assessing the effect of supplementation on the physiology of these sheep, it appears that there is an influence (P<0.05) on the RR and HR, with higher values for Santa Inês ewes subjected to 1.5% concentrate diet. However, RT remained within the normal range, indicating that they are adapted breeds rearing conditions and experimental diet that have efficient mechanisms in respiratory heat dissipation, indicating also that they are qualified to productive farm animals in semi-arid conditions.

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Section: Resultssupporting

confidence: 72%

Thermoregulatory Traits of Native Sheep in Pregnancy and Supplemented in Grazing System

Pereira¹,

Bonifácio²,

Santos³

et al. 2014

JAS

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“…A irrigação pode ser acionada nos veranicos ou na estação seca, quando a precipitação pluvial é insuficiente para atender as necessidades de água das gramíneas. A forragem tropical, de forma isolada pode não conferir elevados ganhos de peso aos animais, especialmente àqueles de maior mérito genético que possuem maiores exigências nutricionais e, dessa forma, uma maneira de potencializar os ganhos individuais dos animais em pastejo é o uso da suplementação alimentar, a exemplo da suplementação com concentrado (SOUZA et al, 2010;OLIVEIRA et al, 2011).…”

Section: Introductionunclassified

Desempenho produtivo de ovinos em pastejo suplementados com concentrados contendo coprodutos da fruticultura

et al. 2014

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ResumoO objetivo desse estudo foi avaliar o desempenho produtivo e as características de carcaça de ovinos mantidos em pastos de capim-tifton 85 irrigados e alimentados com concentrados contendo coprodutos do processamento de frutas. A área de pastagem correspondeu a 0,58 ha, dividida em 24 piquetes, manejada em lotação rotativa, com quatro dias de ocupação e 20 dias de descanso. Foram utilizados 24 ovinos, machos, castrados, com peso corporal inicial médio de 26,9±2,4 kg e dez meses de idade como animais testadores. Foram comparados três coprodutos do processamento de frutas (goiaba, acerola e uva) incluídos em 30% da matéria seca no suplemento concentrado, além do concentrado "controle" composto exclusivamente por ingredientes tradicionais como milho, farelo de soja e farelo de trigo. O delineamento experimental foi o inteiramente casualizado com seis repetições por tratamento. Os concentrados não influenciaram o consumo de forragem, o consumo diário de alimentos, o ganho médio diário, o ganho de peso total, o peso corporal final e o rendimento de carcaça dos animais. Em média, a taxa de lotação obtida foi 90,96 ovinos/ha e a estimativa de produção de carne por unidade de área foi 2.756,50 kg/ha/ano. Dessa forma, os coprodutos do processamento de goiaba, acerola e uva podem compor em 30% os concentrados para ovinos em pastejo sem prejuízo ao consumo de alimentos, desempenho produtivo, características de carcaças dos animais e no desempenho produtivo da área. Palavras-chave: Pasto irrigado, resíduo da fruticultura, semiárido AbstractThe objective of this study was to evaluate the productive performance of sheep kept in irrigated Tifton 85 pastures receiving concentrate supplementation containing different fruits processing by-products. The pasture area corresponded to 0.58 ha, divided in 24 paddocks, under rotational grazing with 20 days of interval of grazing and four days of grazing. 24 male sheep, castrated with 26.9±2.4 of initial body weight and ten months like testers animals, were used. Three fruit processing by-products (guava, barbados cherry and grape wine industry) including in 30% of dry matter basis in supplements, besides the treatment "control" containing traditional ingredients (dry ground corn, soybean meal and wheat bran), were compared. The experimental design was a completely randomized with six replicates by treatments. The concentrates evaluated containing fruit processing by-products did not affect the daily weight gain, the total weight gain and the final body weight of sheep kept in irrigated pastures. The

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“…This inference was made by observing longer grazing periods and because sheep prefer eating leaves (Table 3). Oliveira et al (2011) observed a decrease in forage consumption by sheep supplemented with different protein sources (urea and soybean and cottonseed meals), when compared with the pasture-fed animals; they reported that this occurred due to the substitution consumption of supplements for pasture. An increase in the daily grazing time of animals is a behavioral strategy for compensating reduction in nutrient consumption during limiting conditions in pastures with unfavorable structural and qualitative characteristics.…”

Section: Resultsmentioning

confidence: 99%

Supplementation of sheep with increasing levels of crude protein: performance, animal behavior, and contamination and spread of nematode larvae in Brachiaria brizantha ‘Xaraés’ pasture

Rodrigues

Melo

Sanchês

et al. 2017

SCA

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The aim of the present study was to evaluate the performance, animal behavior, and contamination and spread of nematode larvae of sheep supplemented with increasing levels of protein (15, 25, and 35%) on Xaraés grass (Brachiaria brizantha 'Xaraés') pastures. Fifteen Santa Inês crossbred sheep, with an average age of approximately five months and average initial weight of 14.63 kg, were used in the experiment. The feeding behavior (grazing and idle times) of animals was found to be influenced by the supplementation provided. The highest level of supplementation provided to the animals reduced their grazing time. The different levels of supplementation influenced the average daily gain and total final body weight gain of the sheep in Xaraés grass pastures. A significant difference was observed in the presence of parasitic larvae in the Xaraés grass pastures depending on different protein levels throughout the regrowth period. The number of larvae in feces was influenced by the protein content of the supplement, and varied throughout the pasture rest period. Animals showed a decrease in the number of larvae as their dietary crude protein (CP) content was increased. Supplementation with high protein, together with the action of vermifuge, increased the performance of sheep and reduced their parasite load and grazing time in Xaraés grass pastures. Key words: Endoparasites. Larvae. Performance. Sheep. ResumoObjetivou-se avaliar o desempenho, comportamento animal e a contaminação e distribuição de larvas de nematódeos de ovinos suplementados com níveis crescentes de proteína em pasto de capim-Xaraés. O delineamento experimental foi inteiramente casualizado com três tratamentos (níveis de proteína 15, 25 e 35%). Foram utilizados 15 ovinos mestiços da raça Santa Inês, com aproximadamente cinco meses de idade e peso médio inicial de 14,63 kg. As atividades de comportamento ingestivo (tempo de pastejo e ócio) dos animais foram influenciadas pela suplementação fornecida. O maior nível de suplementação fornecido aos animais reduziu o tempo de pastejo. Os diferentes níveis de suplementações fornecida aos animais influenciou o ganho médio diário e o ganho de peso total final corporal, dos ovinos mantidos em pastos de capim-Xaraés. Observou-se influência das suplementações sobre a presença e número de larvas no pasto. Os animais apresentaram redução do número de larvas com o aumento do teor de PB na dieta. A suplementação com alto teor proteico, juntamente com a ação do vermífugo, aumentou o desempenho dos ovinos e reduziu a carga parasitária e o tempo de pastejo dos animais mantidos em capim-Xaraés, contudo, há a necessidade de uma análise econômica, visto que o alto teor de compostos nitrogenados na dieta pode tornar o sistema inviável. Palavras-chave: Capim-Xaraés. Endoparasitos. Larvas. Ovinos.

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Respostas fisiológicas e desempenho produtivo de ovinos em pasto suplementados com diferentes fontes proteicas

Cited by 8 publications

References 18 publications

Thermoregulatory Traits of Native Sheep in Pregnancy and Supplemented in Grazing System

Thermoregulatory Traits of Native Sheep in Pregnancy and Supplemented in Grazing System

Desempenho produtivo de ovinos em pastejo suplementados com concentrados contendo coprodutos da fruticultura

Supplementation of sheep with increasing levels of crude protein: performance, animal behavior, and contamination and spread of nematode larvae in Brachiaria brizantha ‘Xaraés’ pasture

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