不同蛋白质水平对肥育猪氮排放量和生产性能的影响

doi:10.3321/j.issn:1000-7091.2006.z1.040

华北农学报 ›› 2006, Vol. 21 ›› Issue (S1): 166-171. doi: 10.3321/j.issn:1000-7091.2006.z1.040

所属专题： 土壤肥料；畜牧；

不同蛋白质水平对肥育猪氮排放量和生产性能的影响

邓敦^1,2, 李铁军¹, 黄瑞林¹, 印遇龙¹, 尹奇志³, 何夏阳³

1. 中国科学院亚热带农业生态研究所, 湖南长沙 410125;
2. 中国科学院研究生院, 北京 100039;
3. 湖南百宜饲料科技有限公司湖南浏阳 410300

收稿日期:2006-03-21 出版日期:2006-12-31
作者简介:邓敦(1974-)，男，湖南邵阳人，博士研究生，主要从事单胃动物氨基酸方面研究。
基金资助:
国家“973”项目(2004CB117502);国家自然科学基金(30371038);中科院知识创新重要方向项目(KSCXZ-SW-323)

Effect of Dietary Crude Protein Levels on Nitrogen Excretion and Growth Performance in Finishing Pigs

DENG Dun^1,2, LI Tie-jun¹, HUANG Rui-lin¹, YIN Yu-long¹, YIN Qi-zhi³, HE Xia-yang³

1. Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China;
3. Hunnan Baiyi Feed Technology Co Ltd, Liuyang 410300, China

Received:2006-03-21 Published:2006-12-31

摘要/Abstract

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。

关键词: 氨基酸, 粗蛋白, 生产性能, 肥育猪

Abstract: Two experiments were conducted with finishing pigs to determine the effects of crude protein (CP) levels on growth performance, N and energy balance. Dietary CP levels were 16.1%, 14.3%, 13.3%, 12.4%, or 11.7%. 80 three-line crossbred pigs (Duroc×Landrace×Yorkshine), with initial BW of (51.86±3.11) kg, were allocated to five treatments. Each treatment was sixteen pigs with four repeats in a performance trial. Five barrows (Duroc×Landrace×Yorkshine), with initial BW of (62.96±2.04) kg, were used according to a 5×5 Latin square design in a balance trial. Fecal, urinary, total N excretion, N absorption and N retention (g/d) decreased with decreasing dietary CP level (P<0.01). However, DE and ME/GE(%) increased with decreasing dietary CP level (P<0.05). Dietary CP intake affected (P<0.01) ADG, ADFI, feed efficiency, and plasma concentrations of urea N. Dietary protein concentration reduced from 16.1% to 13.3% can dramatically reduce N excretion with little decrease in growth performance.

Key words: Amino acids, Crude protein, Growth performance, Finishing pigs

中图分类号:

S852.23

邓敦, 李铁军, 黄瑞林, 印遇龙, 尹奇志, 何夏阳. 不同蛋白质水平对肥育猪氮排放量和生产性能的影响[J]. 华北农学报, 2006, 21(S1): 166-171. doi: 10.3321/j.issn:1000-7091.2006.z1.040.

DENG Dun, LI Tie-jun, HUANG Rui-lin, YIN Yu-long, YIN Qi-zhi, HE Xia-yang. Effect of Dietary Crude Protein Levels on Nitrogen Excretion and Growth Performance in Finishing Pigs[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(S1): 166-171. doi: 10.3321/j.issn:1000-7091.2006.z1.040.

http://www.hbnxb.net/CN/Y2006/V21/IS1/166

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