7~12周龄京红商品代蛋鸡饲粮含硫氨基酸需要量的研究

索菲娅, 梁中军, 马秋刚, 张建云, 赵丽红, 计成

doi:10.3969/j.issn.1006-267x.2018.02.019

动物营养学报 >

2018 , Vol. 30 >Issue 2: 553 - 559

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.02.019

禽营养 Poultry nutrition

7~12周龄京红商品代蛋鸡饲粮含硫氨基酸需要量的研究

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中国农业大学动物科技学院, 动物营养国家重点实验室, 北京 100193

索菲娅(1993-),女,山西运城人,硕士研究生,研究方向为家禽营养。E-mail:759164402@qq.com

收稿日期: 2017-08-07

网络出版日期: 2018-02-02

基金资助

国家蛋鸡产业技术体系（CARS-40-K08）

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Dietary Sulphur Amino Acids Requirement of Jinghong Commercial Layers from 7 to 12 Weeks of Age

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State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2017-08-07

Online published: 2018-02-02

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摘要

本试验通过研究不同含硫氨基酸水平对7~12周龄京红商品代蛋鸡生长性能和血清生化指标的影响，以确定其含硫氨基酸的需要量。选取6周龄末体重、胫长均匀一致的京红商品代蛋鸡750只，随机分为5组，每组5个重复，每个重复30只鸡。对照（A）组饲喂含硫氨基酸水平为0.42%的基础饲粮，试验B、C、D和E组在基础饲粮水平上用0.08%、0.16%、0.24%和0.32%的蛋氨酸替代等量的膨润土，使其含硫氨基酸水平分别达到0.50%、0.58%、0.66%和0.74%，试验期6周。结果表明：1）0.58%、0.66%、0.74%含硫氨基酸组蛋鸡末体重和平均日增重显著高于0.42%与0.50%含硫氨基酸组（P<0.05），同时0.66%含硫氨基酸组料重比显著低于0.50%含硫氨基酸组（P<0.05），且蛋鸡血清总蛋白、球蛋白含量也显著高于其他试验组（P<0.05）。2）单斜率非线性折线回归分析表明，以末体重和平均日增重为指标，7~12周龄京红商品代蛋鸡含硫氨基酸推荐需要量为0.62%。综上，7~12周龄京红商品代蛋鸡饲粮含硫氨基酸需要量为0.62%~0.66%。

关键词： 京红商品代蛋鸡; 含硫氨基酸; 生长性能; 血清生化指标; 需要量

本文引用格式

索菲娅, 梁中军, 马秋刚, 张建云, 赵丽红, 计成 . 7~12周龄京红商品代蛋鸡饲粮含硫氨基酸需要量的研究[J]. 动物营养学报, 2018 , 30(2) : 553 -559 . DOI: 10.3969/j.issn.1006-267x.2018.02.019

Abstract

This experiment was conducted to explore the effects of different sulphur amino acid levels on growth performance and serum biochemical indices of Jinghong commercial layers from 7 to 12 weeks of age and to evaluate the dietary sulphur amino acids requirement for them. A total of 750 Jinghong layers aged of 6 weeks with similar body weight and tibia length were randomly divided into 5 groups with 5 replicates per group and 30 hens per replicate. Dietary sulphur amino acid level was 0.42% in a basal diet of control group (group A), and the same amount of bentonite in the basal diet was replaced with 0.08%, 0.16%, 0.24% and 0.32% methionine which made the levels of sulfur amino acids were 0.50%, 0.58%, 0.66% and 0.74% in groups B, C, D and E, respectively. The feeding trial lasted 6 weeks. The results showed as follows:1) the final body weight and average daily gain of hens in 0.58%, 0.66%, 0.74% sulfur amino acid groups were significantly higher than those in 0.42% and 0.50% sulfur amino acid groups (P<0.05). The ratio of feed to gain of hens in 0.66% sulfur amino acid group was significantly lower than that in 0.50% sulfur amino acid group (P<0.05), and the contents of total protein and globulin were significantly higher than those in the other experimental groups (P<0.05). 2) According to one-slope nonlinear broken-line regression analysis based on final body weight and average daily gain, the sulphur amino acid requirement of Jinghong commercial layers from 7 to 12 weeks of age was 0.62%. In conclusion, the sulphur amino acid requirement of Jinghong commercial layers from 7 to 12 weeks of age is recommended for 0.62% to 0.66%.

Key words： Jinghong commercial layers; sulphur amino acids; growth performance; serum biochemical indices; requirement

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