不同蛋白质水平对肥育猪氮排放量和生产性能的影响附视频

被引:21
作者
邓敦 [1 ]
李铁军 [1 ]
黄瑞林 [1 ]
印遇龙 [1 ]
尹奇志 [2 ]
何夏阳 [2 ]
机构
[1] 中国科学院亚热带农业生态研究所
[2] 湖南百宜饲料科技有限公司
关键词
氨基酸; 粗蛋白; 生产性能; 肥育猪;
D O I
暂无
中图分类号
S828 [猪];
学科分类号
摘要
利用氮平衡试验和饲养试验,研究了日粮不同粗蛋白(CP)水平(16.1%,14.3%,13.3%,12.4%和11.7%)对肥育猪生产性能、氮和能量平衡的影响。饲养试验选取体重约为(51.86±3.11)kg的杜×长×大三元杂交猪80头,随机分为5组,每组4个重复。平衡试验选取体重为(62.96±2.04)kg的杜×长×大三元杂交猪5头,按5×5拉丁方设计。结果表明,粪氮、尿氮、总氮、氮吸收和氮沉积均随日粮CP水平的降低而降低(P<0.01),而消化能(DE,%)和代谢能/总能(ME/GE,%)随日粮CP水平的降低而升高(P<0.05)。日粮CP水平显著影响了猪的生产性能和血清尿素氮浓度(P<0.05)。日粮中添加赖氨酸(Lys)、蛋氨酸(Met)和苏氨酸(Thr),可使肥育猪日粮CP水平从16.1%降低到13.3%,且大幅度降低氮排泄量而不影响其生产性能。
引用
收藏
页码:166 / 171
页数:6
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