摘要
为研究酵母浓缩物对AA肉仔鸡生长性能和营养物质表观代谢率的影响，本试验选取240只21日龄的从肉仔鸡，随机分为6组，每组4个重复，每个重复10只鸡，试验期为21d。Ⅰ组为对照组，饲喂基础饲粮；Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组为试验组，分别饲喂含有0．05％、0．10％、0．15％、0．20％和O．25％酵母浓缩物（YC）的饲粮。结果表明：试验组肉鸡的平均日增重和平均日采食量分别高于对照组18．15％（P〈0．05）、20．32％（P〈0．05）、19．51％（P〈0．05）、16．96％（P〉0．05）、13．28％（P〉0．05）和12．22％（P〈0．05）、13．01％（P〈0．05）、12.25％（P〈0．05）、11．07％（P〉0．05）、13．74％（P〉0．05）；Ⅱ、Ⅲ、Ⅳ、Ⅴ组肉仔鸡的料重比较对照组低4．85％～5．83％。Ⅳ组干物质、粗蛋白质和粗脂肪表观代谢率分别较时照组提高8．79％、15．22％和11．68％（P〈0．05）；各试验组粗灰分利用率均有提高趋势，但差异不显著（P〉0．05）。综上所述，酵母浓缩物可明显改善肉仔鸡生长性能，提高营养物质的表观代谢率，综合考虑，酵母浓缩物在21～42日龄阶段从肉仔鸡日粮中的适宜添加量为0．15％。
To study yeast culture additive on growth performance and nutrient apparent metabolic rates in broilers.A total of 240 AA broilers of 21-day-old were selected and randomly divided into 6 group with 4 replicates of 10 each.The trial lasted for 21 days.Group Ⅰ was the control group,which fed basal diet.Group Ⅱ ,Ⅲ, Ⅳ, Ⅴ and Ⅵ were fed basal diet added 0.05%,0.10% ,0.15% ,0.20% ,0.25% yeast culture.The results showed that ：The average daily gain and average daily intake of yeast culture adding group were 18.15%（P 〈 0.05）,20.32%（P 〈 0.05）,19.51%（P 〈 0.05）,16.96%（P 〉 0.05）, 13.28% （P 〉 0.05） and 12.22% （P 〈 0.05）, 13.01%, 12.25% （P 〈 0.05）, 11.07% （P 〉 0.05）, 13.74% （P 〉 0.05）higher than those of control group.The feed/gain of treat groups were 4.85% - 5.83% （P 〈 0.05） lower than that of control group,except for 0.25% group.The apparent metabolic rate of dry matter,crude protein and crude fat increased by 8.79% ,15.22% and 11.68% （P 〈 0.05 ）respectively, compare with control group, and that of crude ash had trend of improvement in treat groups （P 〉 0.05）.Above all,the yeast culture could obviously improve the growth performance and nutrient apparent metabolic rates,and the appropriate addition level of yeast culture was 0.15% in 21 - 42-day-old AA broilers diet.
出处
《中国饲料》
北大核心
2015年第18期17-19,24,共4页
China Feed
基金
广东海洋大学教育教学改革项目(XJG201153)
