Impact of total substitution of corn for soybean hulls in diets for lambs

Revista Brasileira de Zootecnia

Milena Patricia Viana Bastos¹  Gleidson Giordano Pinto De Carvalho¹  Aureliano José Vieira Pires¹  Robério Rodrigues Da Silva¹  Bruna Mara Aparecida De Carvalho¹  Kelly Couto Brandão¹  Camila Maida De Albuquerque Maranhão¹ 

关键词: average daily gain;    intensive system;    meat production;    ovine;   

DOI  :  10.1590/S1806-92902015000300002

来源: SciELO

【 摘 要 】

The experiment was conducted to assess the effect of substituting corn for soybean hulls on the apparent digestibility of nutrients, carcass performance and characteristics, and yield of cuts of 25 non-castrated male Santa Ines lambs with an initial body weight of 20±2 kg, at approximately 6 months of age, sheltered individually in stalls (1.10 × 1.0 m), considering a totally randomized design, fed 600 g/kg of forage and 400 g/kg of concentrate. Soybean hulls replaced corn at 0, 250, 500, 750, and 1,000 g/kg of dry matter. The intake of dry matter (DM), organic matter (OM), neutral detergent fiber (NDF), acid detergent fiber (ADF), NDF corrected for ash and protein (NDFap), total carbohydrates (TC), non-fibrous carbohydrates (NFC) and total digestible nutrients (TDN) in g/day, and the digestibility of NFC increased linearly with the soybean hull replacement. Crude protein intake displayed a quadratic response, whereas the intake of EE in g/day, the apparent digestibility coefficients of DM, OM, CP, EE, NDF, ADF, NDFap and TC, TDN, average daily gain, carcass characteristics, and yield of cuts were not affected by the soybean hull levels. Soybean hull substitution increased the intake of DM and nutrients, making it possible to replace up to 1,000 g/kg of dry matter in the diets for confined sheep, as it does not compromise performance, digestibility, carcass characteristics, or yield of cuts when used in sheep nutrition.

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