摘要
为研究不同水平的酵母菌提取物对肉鸡生长性能、屠宰性能及经济效益的影响,采用单因素随机设计试验,选择体重相近的3周龄爱拔益加(AA)肉鸡240只随机分成4组,每组6个重复,每个重复10只,1组为空白对照组饲喂基础日粮,试验2、3、4组分别在基础日粮中添加1.0%、1.5%、2.0%的酵母菌提取物,预试验7 d,试验期为21 d。结果表明:(1)试验3、4组的平均日增重较1组比分别提高11.7%、10.3%(P<0.05),试验2、3、4组的平均采食量均高于1组(P>0.05),试验3、4组料重比较1组比分别降低17.3%、15.0%(P<0.05);(2)试验2、3、4组的屠宰率、半净膛率均高于1组(P>0.05),试验3、4组的胸肌率、腿肌率较1组比分别提高15.5%、14.4%、16.5%、11.3%(P<0.05);(3)试验3、4组每只肉鸡经济效益较1组相比分别提高15.4%、14.2%。综上,不同水平的酵母菌提取物添加可以提AA肉鸡生长性能、屠宰性能及经济效益指标,以1.5%添加为适宜。
In order to study the effects of different levels of yeast extract on growth performance,slaughter performance and economic benefits of broilers.In this study,240 broilers of 3-week-old with similar weight were randomly divided into 4 groups,each group had 6 repetitions,10 broilers in each repetitions.One group was the blank control group.1.0%,1.5%and 2.0%yeast extract was added to the basic diet in the 2,3 and 4 groups,respectively.The pre-experiment lasted 7 days and the experimental period lasted 21 days.The results showed that:(1)The average daily gain of groups 3 and 4 was 11.7%and 10.3%higher than that of group 1(P<0.05),the average intake of groups 2,3 and 4 was higher than that of group 1(P>0.05),and the ratio of feed to gain of groups 3 and 4 was 17.3%and 15.0%lower than that of group 1(P<0.05);(2)The slaughtering rate and half clean bore rate of groups 2,3 and 4 were all higher than those of group 1(P>0.05).The chest muscle rate and leg muscle rate of groups 3 and 4 were 15.5%,14.4%,16.5%and 11.3%higher than those of group 1 respectively(P<0.05).(3)The economic benefits of each broiler in groups 3 and 4 was 15.4%and 14.2%higher than those of group 1 respectively.In conclusion that the growth performance,slaughtering performance and economic benefit of AA broiler could be improved by adding yeast extract at different levels,and 1.5%was suitable.
作者
唐笑炯
TANG Xiaojiong(Shanxi Vocational College of Finance,Taiyuan,Shanxi Province 030008,China)
出处
《中国饲料》
北大核心
2020年第23期54-56,共3页
China Feed
关键词
酵母菌提取物
AA肉鸡
生长性能
屠宰性能
经济效益
yeast extract
AA broiler
growth performance
slaughter performance
economic benefit
