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| 锌盐对饲料蛋白质保护效果的研究 | |
| 引用本文： | 任 莉,龚月生,张 力.锌盐对饲料蛋白质保护效果的研究[J].西北农林科技大学学报(社会科学版),2004,32(6):41-44. |
| 作者姓名： | 任 莉 龚月生 张 力 |
| 作者单位： | 1. 湛江海洋大学,农学院,广东,湛江,524025 2. 西北农林科技大学,动物科技学院,陕西,杨凌,712100 3. 中国农科院,兰州畜牧与兽药研究所,甘肃,兰州,730050 |
| 基金项目： | 农业部"九五"重点攻关课题(95M02)"畜禽营养需要及调控新技术研究与开发"的部分内容 |
| 摘 要： | 分别用ZnCl2和ZnSO4处理豆粕、棉籽粕、菜籽粕和胡麻粕等4种饲料,用尼龙袋法测定蛋白质在瘤胃的降解率,探讨锌盐对饲料蛋白质的保护效果。结果表明,ZnCl2和ZnSO4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。从降解动力学分析,ZnCl2或ZnSO4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。0.5%ZnCl2处理可使豆粕、棉籽粕、菜籽粕和胡麻粕蛋白质的有效降解率分别降低8.2%,3.8%,14.9%和9.8%;0.65%ZnSO4处理可使豆粕、棉籽粕、菜籽粕和胡麻粕蛋白质的有效降解率分别降低6.4%,12.6%,11.7%和15.4%。 |
| 关 键 词： | 饲料蛋白质 蛋白质保护剂 锌盐 瘤胃 降解率 |
| 文章编号： | 1671-9387(2004)06-0041-04 |
| 收稿时间： | 2003/11/10 0:00:00 |
| 修稿时间： | 2003年11月10 |
Effects of zinc-treated feedstuffs on degradability of crude protein |
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| REN Li,GONG Yue-sheng,ZHANG Li,LU Zhi-gang.Effects of zinc-treated feedstuffs on degradability of crude protein[J].Journal of Northwest Sci-Tech Univ of Agr and,2004,32(6):41-44. | |
| Authors: | REN Li GONG Yue-sheng ZHANG Li LU Zhi-gang |
| Institution: | REN Li~1,GONG Yue-sheng~2,ZHANG Li~3,LU Zhi-gang~1 |
| Abstract: | 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,with zinc sulfate at 0.65% of DM content respectively,on CP degradability in the rumen were investigated.The trial results showed:(1) CP effective degradability was decreased by ZnCl_2 or ZnSO_4 treatment.With 0.5% ZnCl_2 treatment,CP effective degradability was decreased by 8.2%,3.8%,14.9% and 9.8% for SBM,CSM,RSM and FM respectively.With 0.65% ZnSO_4 treatment,CP effective degradability was decreased by 6.4%,12.6%,11.7% and 15.4% for SBM,CSM,RSM and FM respectively.(2) CP effective degradability was decreased by ZnCl_2 or ZnSO_4 treatment,which reduced immediately the degraded fraction and degradation rate. |
| Keywords: | feedstuff protein protein protectant zine salt rumen degradability |
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