摘要
研究选择1日龄AA肉鸡288只,公母各半,随机分成4组:对照组饲喂基础日粮,试验1、2、3组分别在基础日粮中添加10、20、40g菌糠/kg日粮,研究棉籽壳源低聚木糖菌糠(CXOC)不同添加剂量对AA肉鸡生长性能和激素代谢的影响。结果表明:与对照组相比,1～21日龄时,试验2、3组体增重分别提高3.52%(P>0.05)、0.24%(P>0.05);1～42日龄时,试验2组体增重提高1.31%(P>0.05),饲料转化比(FCR)降低2.08%(P<0.05);1～49日龄时,试验组体增重分别提高4.75%(P<0.01)、4.98%(P<0.01)、1.47%(P<0.05),FCR分别降低12.03%(P>0.05)、0.79%(P<0.05)、13.30%(P<0.01)。35日AA肉鸡血清测定结果表明:与对照组相比,试验2、3组GH分别提高了8.06%(P<0.05)、5.01%(P<0.05);试验组的ACTH分别降低了3.14%、31.53%(P<0.05)、28.07%(P<0.05);试验组的T3分别提高了12.89%(P<0.05)、26.86%(P<0.01)、22.42%(P<0.05);试验2、3组的T4分别提高了22.20%(P<0.01)、8.87%;试验1、2组Ins分别提高了16.04%(P<0.05)、20.67%(P<0.01)。以添加20g/kgCXOC生产性能和生长轴范围激素水平为最佳。
The study was to investigate the effects of chaff of xylo-oligosaccharides from cottonseedhull （CXOC） supplementation on production performance and hormone metabolism in broilers fed on based diets and to determine the optimal ratio of supplementation. 288 one-day-age AA broiler chickens were chosen and divided to 4 groups with conu＇ol group （feeding basal diets） and test group Ⅰ , Ⅱ and Ⅲ. The experimental diets consisted of based diets supplemented with 10,20 and 40 g/kg cottonseed-chaff respectively. Results showed that：compared with control group,the body weight in group Ⅱ and compared with control group increased by 3.52% （PM）.05）,0.24% （P〉0.05） of 21-day-age respectively. The body weight in group Ⅱ increased by 1.31% （P〉0.05） and feed conversion ratio （FCR） decreased by 2.08% （P〈0.05） of 42-day-age. The body weight in treatment groups increased by 4.75% （P〈0.01）,4.98% （P〈0.01）,1.47% （P〈0.05） and FCR decreased by 2.03% （P〉0.05）,0.79% （P〈0.05）, 13.30% （P〈0.01） respectively of 49-day-age respectively. For 35-day-age, serum GH in group Ⅱ and Ⅲ increased by 8.06% （P〈0.05） and 5.01% （P〈0.05）. Serum ACTH in test groups decreased by 3.14%,31.53% （P〈0.05） ,28.07% （P〈0.05） respectively. Serum T3 in test groups increased by12.89% （P〈0.05）, 26.86% （P〈0.01） ,22.42% （P〈0.05） respectively. Serum T4 in group Ⅱ and Ⅲ increased by 22.20% （P〈0.01） ,8.87%. Serum Ins in group Ⅰ and Ⅱ increased by 16.04% （P〈0.05）,20.67% （P〈0.01）. The optimization supplementation is 20 g/kg chaff of xylo-oligosaccharides from cottonseed hull（CXOC） to improve performance and hormone metabolism.
出处
《中国家禽》
北大核心
2009年第7期27-30,共4页
China Poultry
关键词
棉籽壳
低聚木糖
菌糠
肉鸡
生产性能
激素代谢
cottonseedhull
xylo-oligosaccharides
chaff
broiler chickens
performance
hormone metabolism
