低蛋白质饲粮添加甘氨酸对肉仔鸡生长性能、胴体组成和血液生化指标的影响

杨永岳; 武书庚; 王晶; 许丽; 张海军

doi:10.3969/j.issn.1006-267x.2016.04.014

动物营养学报 >

2016 , Vol. 28 >Issue 4: 1068 - 1075

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.04.014

禽营养 Poultry Nutrition

低蛋白质饲粮添加甘氨酸对肉仔鸡生长性能、胴体组成和血液生化指标的影响

杨永岳 ,
武书庚 ,
王晶 ,
许丽 ,
张海军

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1. 东北农业大学动物营养研究所, 哈尔滨 150030;
2. 中国农业科学院饲料研究所, 农业部饲料生物技术重点开放实验室, 生物饲料开发国家工程研究中心, 北京 100081;
3. 法国安迪苏集团公司, 安东尼 92160

收稿日期: 2015-10-13

网络出版日期: 2016-04-11

基金资助

家禽产业技术体系北京市创新团队(CARS-PSTP);国家科技支撑计划(2011BAD26B04)

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Effects of Glycine Addition in Low Crude Protein Diets on Growth Performance, Carcass Composition and Blood Biochemical Parameters of Broilers

YANG Yongyue ,
WU Shugeng ,
WANG Jing ,
XU Li ,
ZHANG Haijun

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1. Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China;
2. Key Laboratory of Feed Biotechnology of Ministry of Agriculture, National Engineering Research Center of Biological Feed, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
3. Adisseo France S. A. S., Antony 92160, France

Received date: 2015-10-13

Online published: 2016-04-11

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摘要

本试验旨在研究在低粗蛋白质(CP)饲粮中添加甘氨酸(Gly)对肉仔鸡生长性能、胴体组成和血液生化指标的影响。选用180只1日龄健康爱拔益加(AA)肉仔鸡(公雏),随机分为3组,每组6个重复,每个重复10只。3组分别为:正对照(PC)组,前期和后期饲粮CP水平分别为22.0%和20.0%;负对照组,前期和后期饲粮CP水平分别为18.0%和15.5%;Gly组,在负对照组基础上添加Gly,使饲粮Gly和丝氨酸水平为2.32%。试验期42 d,分为前期(1~21 d)和后期(22~42 d)2个阶段。结果表明:1)饲粮CP水平降低4.0~4.5个百分点,试验1~21 d的料重比(F/G)显著升高(P<0.05),22~42 d的平均日增重(ADG)显著降低(P<0.05);添加Gly后,1~21 d F/G显著降低(P<0.05),22~42 d ADG显著升高(P<0.05),达到了与PC组相似的生长性能。2)CP水平降低,肉仔鸡42日龄胸肌率降低了9.5%(P<0.05)、腹脂率提高了60.3%(P<0.05);添加Gly后,胸肌率提高了17.6%(P<0.05),腹脂率降低了34.6%(P<0.05),获得了与PC组相似的胴体组成。CP水平降低、添加Gly均未显著影响屠宰率、全净膛率和腿肌率(P>0.05)。3)各组间血液生化指标均无显著差异(P>0.05)。可见,低CP饲粮中添加Gly可以改善生长性能和胴体组成,结果提示了Gly在肉仔鸡低CP饲粮中的可应用性。

关键词： 肉仔鸡; 低蛋白质饲粮; 甘氨酸; 生长性能; 胴体组成

本文引用格式

杨永岳 , 武书庚 , 王晶 , 许丽 , 张海军 . 低蛋白质饲粮添加甘氨酸对肉仔鸡生长性能、胴体组成和血液生化指标的影响[J]. 动物营养学报, 2016 , 28(4) : 1068 -1075 . DOI: 10.3969/j.issn.1006-267x.2016.04.014

Abstract

This experiment was conducted to investigate the effects of glycine(Gly) addition in low crude protein(CP) diets on growth performance, carcass composition and blood biochemical parameters of broilers. A total of 1801-day-old healthy male broiler chicks(Arbor Acres) were randomly allotted into three groups, and each group consisted of 6 replicates with 10 birds each. The three groups were:positive control(PC) group that with 22.0% and 20.0% CP for starter and grower diets, negative control(NC) group containing 18.0% and 15.5% CP in starter and grower diets, and Gly group with super addition of Gly on the basis of NC group to provide 2.32% Gly+serine(Ser). The experiment lasted for 42 d with 2 periods of 1 to 21 d and 22 to 42 d. The results showed as follows:1) the CP level reduced by 4.0% to 4.5% elevated feed/gain(F/G) during starter phase(1 to 21 d)(P<0.05) and decreased average daily gain(ADG) during grower phase(21 to 42 d)(P<0.05). Gly addition significantly decreased F/G in starter phase(P<0.05) and increased ADG in grower phase(P<0.05). The addition of Gly recovered the growth performance of chicks fed low CP diet to similar level of the PC group. 2) Low CP diet decreased the breast muscle percentage by 9.5%(P<0.05) and elevated abdominal fat percentage by 60.3%(P<0.05) than the PC diet. Supplementation of Gly significantly improved the breast muscle percentage by 17.6%(P<0.05) and reduced the abdominal fat percentage by 34.6%(P<0.05), and recovered the carcass composition similar to the PC group. Low CP diet did not significantly affected the slaughter percentage, dressing percentage and leg muscle percentage irrespective the presence of Gly compared to the PC diet(P>0.05). 3) No significant differences in plasma biochemical parameters were observed among groups(P>0.05). In conclusion, Gly addition can improve growth performance and carcass composition which imply the promising application of Gly in low CP diet for broilers.

Key words： broiler; low crude protein diet; glycine; growth performance; carcass composition

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