Abstract
Sheep production systems installed in the semi-arid region of Brazil depend on the forage support the 'caatinga' biome. This study aimed at evaluating the substitution of hybrid 'Tifton 85' (Cynodon spp.) by cassava (Manihotpseudoglaziovii Pax & K. Hoffm.) hay or silage on the components of sheep's' body weight. Twenty-four animals, with no defined breed, were used for the study, with an initial body weight of 19.77 ± 1.95 kg and an average age of 6-mo, being divided into three treatments ('Tifton 85' hay, cassava silage, and cassava hay). The animals were slaughtered at 56 d and all the body parts of the animals were weighed. Data were subjected to ANOVA and mean comparison test (P = 0.05). Means were superior (P 0.05) for body weight at slaughter and cold carcass weight, which had means of 28.10 and 12.38 kg, respectively. The hot carcass and leg yields showed values of 58% and 34%, respectively, and were not influenced (P > 0.05) by different forages. The constituents that were not components of the carcass, organs, offal, and by-products were not affected by the replacement of 'Tifton 85' hay by cassava hay or silage. Cassava hay or silage can replace 'Tifton 85' hay for feeding sheep in complete diets without compromising their body components' yields and weights.
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