摘要
The use of agricultural by-products might provide an important alternative to improve animal agriculture and to reduce feeding costs. The effects of inclusion in the diet of four levels of delinted cottonseed (0, 80, 160, and 240 g/kg) on intake, digestibility, nitrogen balance, blood parameters, and the ingestive behaviour of confined sheep were studied. Twenty-four mixed-breed rams with an average body weight of 27.6 ± 2.9 kg were used in a completely randomised design with four treatments. The addition of delinted cottonseed (DCS) did not alter (P > 0.05) the intake of dry matter, crude protein, organic matter, neutral detergent fibre, or ether extract in the two forms calculated (g/day and % body weight). The use of different levels of DCS in sheep feed did not influence (P > 0.05) the voluntary water intake. The dietary DCS levels linearly affected (P < 0.05) the digestibility coefficients of the dry matter (DM), organic matter, neutral detergent fibre, ether extract, and non-fibrous carbohydrates. The DCS inclusion levels did not affect the nitrogen balance (P = 0.22), plasma concentrations of urea (P = 0.51), and glucose (P = 0.17).The feeding efficiency and rumination in g DM/h reduced linearly (P < 0.05) with the addition of DCS in the diet. Therefore, the addition of delinted cottonseed affects the intake, digestibility, and ingestive behaviour of confined sheep, and the addition of up to 80 g/kg delinted cottonseed in the diet of confined sheep is recommended.
摘要译文
农业副产品的使用可能为改善畜牧业和降低饲料成本提供重要的替代方法。研究了日粮中添加4种去皮棉籽（0、80、160和240 g / kg）对进食量，消化率，氮平衡，血液参数和圈养绵羊的摄取行为的影响。在二十种完全随机设计中，采用二十种平均体重为27.6±2.9千克的混种公羊进行了四种处理。计算添加两种形式的干物质，粗蛋白，有机物质，中性洗涤剂纤维或醚提取物的摄入量，添加去皮棉籽（DCS）并没有改变（P> del0.05）（P /天和％体重）。在绵羊饲料中使用不同水平的DCS不会影响自愿饮水（P> 0.05）。膳食DCS水平线性影响（P <0.05）干物质（DM），有机物质，中性洗涤剂纤维，醚提取物和非纤维碳水化合物的消化系数。 DCS的夹杂水平对氮素平衡（P = 0.22），血浆尿素浓度（P = 0.51）和葡萄糖（P = 0.17）没有影响。以g DM / h为单位的饲喂效率和反刍力呈线性下降（P <0.05）。 ）在饮食中添加DCS。因此，添加带斑点的棉籽会影响圈养绵羊的摄入，消化率和摄食行为，建议在带圈绵羊的饮食中添加高达80 g / kg的带斑点的棉籽。
W. J. R. Castro[1];A. M. Zanine[2];D. J. Ferreira[2];A. L. Souza[1];R. M. A. Pinho[2];M. O. M. Parente[2];H. N. Parente[2];E. M. Santos[3]. Delinted cottonseed in diets for finishing sheep[J]. Tropical Animal Health and Production, 2020,52(5): 2461-2468