Periódicos Brasileiros em Medicina Veterinária e Zootecnia

p. 2779-2808

Ovine feed intake, digestibility, and nitrogen balance in feeds containing different amounts of cupuaçu meal

Silva Rodrigues, LaurenaPeres Menezes, BrunoGuimarães Maciel e Silva, AndréFaturi, CristianAndréa Rodrigues da Silva, JamileRossetto Garcia, Alexandrede Souza Nahum, BenjamimJuliano Tavares de Andrade, Stéfanode Brito Lourenço Junior, José

Twenty neutered male sheep were subjected to 26 days of a metabolic assay at Embrapa Eastern Amazon in Belém, PA, Brazil (012602S and 482621W; altitude 8 m). The trial followed a completely randomized design, with five treatments and four repetitions. Treatment A (control) consisted of a diet containing 100% grass. The diet in treatment B contained 10% CM and 90% grass; that in treatment C contained 20% CM and 80% grass; that in treatment D contained 40% CM and 60% grass; and that in treatment E contained 60% CM and 40% grass. Intake of experimental diet and apparent digestibility coefficient of dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), ethereal extract (EE), cellulose (CEL), hemicellulose (HEM), and nitrogen balance (NB) were assessed. Results showed that the level of CM replacement significantly affected intake of mineral matter (IMM), crude protein (ICP), ethereal extract (IEE), and cellulose (ICEL), with the highest (P 0.05) values of IMM, ICP, and IEE being observed for feed in which 60% of grass was replaced by CM, indicating that the acceptance of the experimental diet was good. ICEL decreased as levels of CM replacement increased. At 40% replacement, the apparent DM digestibility coefficient was the lowest (41.54%) and did not statistically differ from diets with 60% (45.74%) and 20% (

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