摘要
为研究不同垫料厚度和饲养密度组合对黄羽肉鸡生产性能的影响,试验以1日龄土鸡2号公鸡为试验动物,分为6个处理组,设置两个垫料厚度(3 cm和8 cm)及四个密度梯度(10只/m^(2)、12只/m^(2)、14只/m^(2)、16只/m^(2)),每个处理组设5个重复。结果显示:炎热季节,8 cm垫料厚度条件下,饲养密度10只/m^(2)组同比12只/m^(2)组、14只/m^(2)组、16只/m^(2)组,料肉比2.30,分别降低0、0.03、0.07;日采食71.9 g,分别提高2.9 g、3.3 g、5.1 g;日增重31.3 g,分别提高1.4 g、1.7 g、3.1 g;垫料温度31.0℃,分别降低1.4℃、1.6℃、2.4℃;肉鸡均匀度72.2%,分别降低2.4%,提高10.2%、11.9%。在10只/m^(2)密度条件下,3 cm垫料组较8 cm垫料组日增重高1 g,料肉比低0.03,日采食量高3.2 g,垫料温度低3.7℃,肉鸡均匀度高7.2%。在16只/m^(2)密度条件下,3 cm垫料组较8 cm垫料组日增重高1.8 g,采日食量高4.2 g,垫料温度低3.9℃,肉鸡均匀度高9.7%。8 cm垫料厚度组较3 cm垫料厚度组各项动物福利指标均有所改善,饲养密度从10只/m^(2)逐步提高到16只/m^(2),羽毛污染、损伤及胸囊肿评分呈现升高的规律。研究表明,结合炎热季节促进采食和增重的饲养要点,建议开放式平养鸡舍黄羽肉鸡密度为10只/m^(2),垫料厚度设置为3 cm。
To study aimed to investigate the effects of different combinations of padding thickness and stocking density on growth performance of yellow feathered chickens.A total of one-day-age Yellow Chicken No.2 cockerels were used as experimental animals and divided into 6 treatment groups.Two bedding thicknesses(3 cm and 8 cm)and four density gradients(10 chickens/m^(2),12 chickens/m^(2),14 chickens/m^(2),16 chickens/m^(2))were set up,with 5 replicates in each treatment group.The results showed that under the condition of 8 cm litter thickness,compared with the groups of 12 chickens/m^(2),14 chickens/m^(2)and 16 chickens/m^(2),the feed conversion ratio of the group with a stocking density of 10 chickens/m^(2)was 2.30,which was reduced by 0,0.03 and 0.07;The daily feed intake was 71.9 g,which was increased by 2.9 g,3.3 g and 5.1 g;The daily weight gain was 31.3 g,which was increased by 1.4 g,1.7 g and 3.1 g;The litter temperature was 31.0℃,which was reduced by 1.4℃,1.6℃and 2.4℃;The uniformity of broilers was 72.2%,which was reduced by 2.4%and increased by 10.2%and 11.9%.Under the density condition of 10 chickens/m^(2),compared with the 8 cm litter group,the 3 cm litter group had a daily weight gain of 1 g higher,a feed conversion ratio of 0.03 lower,a daily feed intake of 3.2 g higher,a litter temperature of 3.7℃lower,a broiler uniformity of 7.2%higher.Under the density condition of 16 chickens/m^(2),compared with the 8 cm litter group,the 3 cm litter group had a daily weight gain of 1.8 g higher,a daily feed intake of 4.2 g higher,a litter temperature of 3.9℃lower,a broiler uniformity of 9.7%higher.The various animal welfare indicators of the 8 cm litter thickness group were improved compared with the 3 cm litter thickness group.As the stocking density gradually increased from 10 chickens/m^(2)to 16 chickens/m^(2),the scores of feather pollution,damage,and breast cyst showed an increasing trend.Based on the results of this experiment and combined with the feeding points of promoting feed intake and weight gain in the hot season,it is recommended that the stocking density of yellow feathered chickens in open flat chicken houses be 10 chickens/m^(2),and the litter thickness be set at 3 cm.
作者
黎鸿彬
彭运智
谭会泽
尹亮
郑娴娴
李耿强
LI Hongbin;PENG Yunzhi;TAN Huize;YIN Liang;ZHENG Xianxian;LI Gengqiang(Wens Foodstuffs Group Co.,Ltd.,Yunfu,Guangdong 527400;Key Laboratory of Animal Nutrition and Healthy Breeding of Ministry of Agriculture and Rural Affairs,Yunfu,Guangdong 527400)
出处
《中国家禽》
北大核心
2025年第2期83-88,共6页
China Poultry
基金
省级农业科技创新推广及农业资源与生态环境保护建设项目(2021KJ115)
云浮市2021年省科技创新战略专项(2021090302)。
关键词
垫料厚度
饲养密度
肉鸡
生产性能
pad thickness
feeding density
broiler chicken
growth performance
作者简介
黎鸿彬(1986-),男,硕士,中级畜牧师,主要从事畜牧饲养管理与农业技术研究推广工作,E-mail:710105781@qq.com;通信作者:谭会泽(1977-),男,博士,正高级畜牧师,主要从事动物营养研究及农业技术推广工作,E-mail:tanhuize5@163.com。
