摘要
选用1日龄AA肉仔鸡360只,随机分为5个处理,在基础日粮中分别添加0、0.05、0.10、0.15、0.20g/kgα-半乳糖苷酶制剂,每个处理6个重复,每个重复12只鸡,试验期6周,测定21、42d的平均日增体质量、日采食量和料重比及血清葡萄糖、总蛋白、白蛋白、总胆固醇、甘油三酯、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇含量和42d肠道微生物菌群数量。结果显示,0.10、0.15、0.20g/kgα-半乳糖苷酶组显著提高了21、42日龄日增体质量2.56%～4.54%(P<0.05),降低42日龄的料重比1.91%～4.59%(P<0.05)。α-半乳糖苷酶可以使血清中总胆固醇、甘油三酯、低密度脂蛋白胆固醇含量下降,总蛋白、高密度脂蛋白胆固醇、白蛋白含量升高,显著增加AA肉鸡肠道有益菌群的数量(P<0.05)并且使有害菌群的数量明显降低(P<0.05)。结果表明,α-半乳糖苷酶有利于提高AA肉鸡生长性能,以0.1～0.2g/kgα-半乳糖苷酶添加水平较好。
The experiment was conducted to study the effects of α-galactosidase on growth per- formance and serum biochemical parameters in Arbor Acres （AA）broilers fed with corn-soybean meal basal diet. 360 Arbor Acres （AA） broilers at the age of 1 d were divided into 5 treatments with 6 replicate of 12 chicks each. Five treatments were supplemented with 0,0.05,0.10,0.15 and 0.20 g/kg α-galactosidase in the basal diets, respectively. The experiment lasted for six weeks. The effects of α-galactosidase on average daily weight gain, average daily feed intake, feed/gain during 0-21 d, 22-42 d, the contents of GLU, TP, ALB, TC, TG, HDL-C, LDL-C in serum at the age of 21 and 42 d and the number of intestinal microbial flora at the age of 42 d were studied. The result showed that supplemental α-galactosidase levels of 0. 10,0. 15 and 0.20 g/kg influenced significantly daily gain by 2.56%-4.54% during 0-21 d,22-42 d （P〈0. 05） ,and ruduced signifi- cantly feed/gain by 1.91%-4.59% during 22-42 d （P〈0.05）. It was concluded that α-galactosi- dase could reduce the contents of TC, TG, LDL-C in serum, and increase the contents of TP, ALB, HDL-C in serum,the number of Lactobacillus increased significantly（P〈0.05） and that of E. coli decreased（P〈0.05）. In a word,α-galactosidase could improve growth performance of Ar- bor Acres （AA）broilers,and the optimal supplemental level of α-galactosidase was 0.1-0.2 g/kg.
出处
《中国兽医学报》
CAS
CSCD
北大核心
2013年第7期1059-1063,共5页
Chinese Journal of Veterinary Science
基金
国家现代农业产业技术体系项目(CARS-42)
河南省科技攻关重大项目(092101110200)
关键词
Α-半乳糖苷酶
生长性能
血清生化指标
玉米-豆粕
AA肉鸡
α-galactosidase
growth performance
serum biochemical parameters
corn-soybean
Ar- bor Acres （AA） broilers
