1～63日龄黄羽肉鸡饲粮赖氨酸需求量研究  

Dietary Lysine Requirement for Chinese Yellow-Feather Broilers of 1 to 63 Days of Age

作　　者：王一冰 蒋守群 周桂莲 苟钟勇 李龙 林厦菁 范秋丽 崔小燕 WANG Yibing;JIANG Shouqun;ZHOU Guilian;GOU Zhongyong;LI Long;LIN Xiajing;FAN Qiuli;CUI Xiaoyan(Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangdong Public Laboratory of Animal Breeding and Nutrition, Key Laboratory of Animal Nutrition and Feed Science (South China) of Ministry of Agriculture,State Key Laboratory of Livestock and Poultry Breeding, Institute of Animal Science,Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China)

机构地区：[1]广东省农业科学院动物科学研究所畜禽育种国家重点实验室农业部华南动物营养与饲料重点实验室广东省动物育种与营养公共实验室广东省畜禽育种与营养研究重点实验室

出　　处：《动物营养学报》2019年第7期3074-3085,共12页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家自然科学基金青年科学基金(31802104);国家肉鸡产业技术体系项目(CARS-41);广东省自然基金项目(2017A030310096);广东省农业科学院院长基金(201908,2016020)

摘　　要：本试验旨在研究1~63日龄黄羽肉鸡在不同生长阶段饲粮赖氨酸需要量。试验采用2(性别)×5(赖氨酸水平)因子试验设计,选用1、22、43日龄快速(63日龄出栏)岭南黄鸡作为试验鸡,每一阶段的饲养周期为21 d。试验1选取1日龄鸡苗雌雄各750只,雌雄各5个组,每组3个重复,每个重复50只鸡;另取雌雄各120只进行氮代谢试验,雌雄各5个组,每组3个重复,每个重复8只鸡。试验2选取22日龄肉鸡雌雄各800只,雌雄各5个组,每组4个重复,每个重复40只鸡;另取雌雄各120只进行氮代谢试验,雌雄各5个组,每组4个重复,每个重复6只鸡。试验3选取43日龄肉鸡雌雄各800只,分组同试验2。饲粮赖氨酸水平设置如下:1~21日龄,0.93%、1.03%、1.13%、1.23%和1.33%;22~42日龄,0.80%、0.90%、1.00%、1.10%和1.20%;43~63日龄,0.65%、0.75%、0.85%、0.95%和1.05%。通过测定饲粮赖氨酸水平对试鸡生长性能、胴体品质、氮代谢率以及血清生化指标的影响,确定不同性别、日龄黄羽肉鸡饲粮赖氨酸需要量。结果表明:1~21日龄,1.13%赖氨酸水平组雌、雄试鸡平均日增重最高,料重比最低,血清尿酸含量最低。22~42日龄,1.00%赖氨酸水平组雄性试鸡料重比较低,雌、雄试鸡平均日增重随饲粮赖氨酸水平的升高呈现出先提高后降低的规律性变化趋势,并在饲粮赖氨酸水平为1.00%时雌性试鸡表现最佳,同时1.00%赖氨酸水平组雌性试鸡胸肌率最高。43~63日龄,0.85%赖氨酸水平组雄、雌试鸡平均日增重最高、料重比较低,雌性试鸡胸肌率最高。综上,本试验条件下,1~21日龄、22~42日龄和43~63日龄黄羽肉鸡饲粮赖氨酸适宜水平分别为1.13%、1.00%和0.85%。This experiment was conducted to investigate the dietary lysine requirement for Chinese yellow-feather broilers from 1 to 63 days of age in different growth stages. A 2( gender) ×5( lysine level) factor test design was adopted in the experiment,and the fast Lingnan yellowchickens of 1,22 and 43 days of age( slaughtered at 63 days of age) were selected for feeding with three stages of 21 days each. In experiment 1,a total of 750 male and 750 female 1-day-old chickens were selected,and divided into 5 male groups and 5 female groups with 3 replicates in each group and 50 chickens in each replicate. In addition,120 males and 120 females were selected and divided into 5 male groups and 5 female groups with 3 replicates in each group and8 chickens in each replicate for the nitrogen metabolism test. In experiment 2,a total of 800 male and 800 female 22-day-old broilers were selected,and divided into 5 male groups and 5 female groups with 4 replicates in each group and 40 broilers in each replicate. In addition,120 males and 120 females were selected and divided into 5 male groups and 5 female groups with 4 replicates in each group and 6 broilers in each replicate for the nitrogen metabolism test. In experiment 3,a total of 800 male and 800 female 43-day-old broilers were selected and grouped with the same of experiment 2. The dietary lysine levels were set as 0. 93%,1. 03%,1. 13%,1.23% and 1.33% for 1 to 21 days of age,0.80%,0.90%,1.00%,1.10% and 1.20% for 22 to 42 days of age,and 0.65%,0.75%,0.85%,0.95% and 1.05% for 43 to 63 days of age. The effects of dietary lysine levels on growth performance,carcass quality,nitrogen metabolism rate and serum biochemical indices of broilers were measured to determine the dietary lysine requirement for Chinese yellow-feather broilers with different genders and ages. The results showed that the average daily weight gain of both male and female broilers from 1 to 21 days was the highest,and feed to gain ratio and serum uric acid content were the lowest in 1.13%lysine level group. Fro

关 键 词：赖氨酸 黄羽肉鸡 需要量 生长性能 氮代谢 

分 类 号：S831.5[农业科学—畜牧学]