氯化锌对饲料蛋白质瘤胃降解的影响

Effects of Zinc Chloride on the Rumen Degradability of Protein in 4 Feedstuffs

探索用新的蛋白质保护剂氯化锌保护豆粕、棉籽粕、菜籽粕和胡麻粕4种饲料,用尼龙袋法测定4种饲料处理前后蛋白质的瘤胃降解率。结果表明:ZnCl2处理可以降低饲料蛋白质在瘤胃的降解率,能够保护饲料蛋白质,提高过瘤胃蛋白的数量。0.5%ZnCl2处理可降低豆粕、棉籽粕、菜籽粕和胡麻粕蛋白质有效降解率8.2%、3.8%、14.9%和9.8%。从降解动力学分析,ZnCl2处理降低了饲料蛋白质的快速降解部分和降解速度,从而降低了蛋白质的有效降解率。

The effects of treating soybean meal(SBM),cottonseed meal(CSM),rapeseed meal(RSM)and flax meal(FM) with zinc chloride at 0.5% of DM content respectively,on CP degradability in the rumen were investigated.The trial results showed:CP effective degradability was decreased by ZnCl2 treatment.With 0.5% ZnCl2 treatment,CP effective degradability was decreased by 8.2%?3.8%?14.9% and 9.8% for SBM,CSM,RSM and FM respectively.CP effective degradability was decreased by ZnCl2 treatment,which reduced the immediately degraded fraction and degraded rate.