猪营养 Swine Nutrition

标准回肠可消化缬氨酸水平对生长猪生长性能、血浆氨基酸和尿素氮含量的影响

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  • 1. 湖南农业大学饲料安全与高效利用教育部工程研究中心, 长沙 410128;
    2. 湖南新发展农牧科技有限公司, 衡阳 421001
易孟霞(1980-),女,湖南宁乡人,硕士研究生,从事饲料营养研究。E-mail:81733743@qq.com

收稿日期: 2014-03-24

  网络出版日期: 2014-08-13

基金资助

公益性行业(农业)科研专项(200903006)

Effects of Standardized Ileal Digestible Valine Level on Growth Performance, Plasma Amino Acids and Urea Nitrogen Contents of Growing Pigs

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  • 1. Engineering Research Center for Feed Safety and Efficient Utilization of Ministry of Education, Hunan Agricultural University, Changsha 410128, China;
    2. Hunan Xinfazhan Agriculture and Animal Husbandry Technology Co., Ltd., Hengyang 421001, China

Received date: 2014-03-24

  Online published: 2014-08-13

摘要

本试验旨在探讨饲粮中不同标准回肠可消化缬氨酸水平对生长猪生长性能、血浆氨基酸和尿素氮含量的影响。试验选用420头始重为(24.31±1.74)kg的杜×长×大三元生长猪,按体重相近、遗传基础相似的原则,随机分为5个处理,每个处理6个重复,每个重复14头猪。试验饲粮除缬氨酸水平外,其余营养水平均参照NRC(2012)推荐标准设计,试验饲粮标准回肠可消化缬氨酸水平分别为0.59%、0.64%、0.69%、0.74%和0.79%。结果表明:饲粮标准回肠可消化缬氨酸水平为0.69%、0.74%和0.79%处理的平均日增重和料重比差异不显著(P>0.05),但较标准回肠可消化缬氨酸水平为0.59%的处理得到显著改善(P<0.01),同时随着饲粮标准回肠可消化缬氨酸水平增加均呈线性和二次趋势(P<0.01)。采用折线模型和二次回归趋势,综合平均日增重和料重比的分析,当饲粮中标准回肠可消化赖氨酸水平为0.98%,得到20~50 kg生长猪饲粮标准回肠可消化缬氨酸需要量范围为0.65%~0.73%,最佳需要量为0.68%。

本文引用格式

易孟霞, 易学武, 贺喜, 陈达图, 胡官波, 张石蕊 . 标准回肠可消化缬氨酸水平对生长猪生长性能、血浆氨基酸和尿素氮含量的影响[J]. 动物营养学报, 2014 , 26(8) : 2085 -2092 . DOI: 10.3969/j.issn.1006-267x.2014.08.009

Abstract

This experiment was conducted to investigate the effects of dietary standardized ileal digestible (SID) valine (Val) level on growth performance, plasma amino acids and urea nitrogen contents of growing pigs. This experiment was conducted to choose 420 barrows (Duroc×Landrace×Yorkshire) which were allotted to 5 treatments with 6 replicates per treatment and 14 barrows per replicate. Except dietary Val level, the nutrient levels of experimental diets were referred to recommended the nutrient requirements of swine in NRC (2012), therefore dietary SID Val levels were 0.59%, 0.64%, 0.69%, 0.74% and 0.79%, respectively. The results showed as follows: the average daily gain and feed to gain ratio of treatments with the dietary SID Val level at 0.69%, 0.74% and 0.79% were no significantly different (P>0.05), but were significantly improved when compared with the treatment with the dietary SID Val level at 0.59% (P<0.01). With the dietary SID Val level increased, the average daily gain and feed to gain ratio had linear and quadratic trend (P<0.01). With broken-line model and quadratic regression trend of the data from average daily gain and feed to gain ratio, this trial showed that the dietary SID Val requirement is 0.65% to 0.73% when the dietary SID Lys level is 0.98%, and the optimum SID Val level is 0.68% for 20 to 50 kg growing pigs.

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