291 resultados para Bolsas do íleo
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Zootecnia - FCAV
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Pós-graduação em Agronomia (Energia na Agricultura) - FCA
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Zootecnia - FMVZ
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The objective this work was to evaluate the degradation, fermentation and kinetics of passage rumen fluid en sheep fed diets containing different carbohydrate associated with the oil. Four rumen cannulated sheep were allotted in 4 x 4 latin square. The treatments consisted of diets with high neutral detergent soluble fiber and diets with high starch associated or not with 4,2% of oil. Incubation times were 3, 6, 12, 24, 48, 72, 96 and 120 hours and ruminal fluid was collected at 0, 2, 4, 6, 8, 10, 12, and 24 hours after feeding. Diets high neutral detergent fiber soluble resulted in greater degradation of dry matter, crude protein, neutral detergent fiber soluble and starch, and higher pH values, butyric acid production, dilution rate and ruminal recycling compared with diets high starch content. The inclusion of 4,2% oil the different carbohydrate sources had no influence on the fermentation kinetics and degradation of the fiber. High content of neutral detergent soluble fiber in the diet favors the ruminal fermentation compared to the high starch content.
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The preventive efficacy of ivermectin and abamectin administered in different routes (subcutaneous, intramuscular and pour-on) and doses (200 and 500mcg kg(-1)) against Cochliomyia hominivorax in the scrotal sac of cattle after castration, was evaluated. Animals from six different farms, in the state of Sao Paulo and Minas Gerais, Brazil were used. For each study, 3045 uncastrated bulls, depending on the number of groups, were selected. On day zero of the study, the procedure was carried out by the method of bloody castration and the animals were treated after this process. The efficacy of ivermectin and abamectin administered via the pour-on (500mcg kg(-1)), subcutaneous (200mcg kg(-1)) as well as the efficacy of abamectin intramuscularly (200mcg kg(-1)) were evaluated. In each experiment, one group of animals was kept as control. The animals were evaluated from the 3rd to the 14th day after castration process/treatment. The efficacy values for both active principles were <= 30% the next day 10 post-treatment (PT), and in five experiments, both ivermectin and abamectin, regardless of the route of administration, were ineffective (0.0%) on the day 10th PT. Based on the results found in this study, conducted in different properties from southeastern Brazil, both ivermectin and abamectin, when used the protocol presented, were considered ineffective in preventing scrotal myiasis in bulls, irrespective of the route of administration and dose used.
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Pós-graduação em Zootecnia - FCAV
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Pós-graduação em Patologia - FMB
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Pós-graduação em Odontologia - FOAR
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Pós-graduação em Zootecnia - FCAV
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Ciências Odontológicas - FOAR