复合饲料添加剂对肉鸡生长性能、血清生化指标、ND抗体效价和肠道组织形态的影响  

Effects of Compound Feed Additives on Growth Performance,Serum Biochemical Indices,ND Antibody Titer and Intestinal Morphology of Broilers

作　　者：王克玮 武志伟 展振峰 徐丽兰 李海花 乔家运 WANG Kewei;WU Zhiwei;ZHAN Zhenfeng;XU Lilan;LI Haihua;QIAO Jiayun(Tianjin Key Laboratory of Conservation and Utilization of Animal Diversity,College of Life Sciences,Tianjin Normal University,Tianjin 300387,China;Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry,College of Animal Science and Veterinary Medicine,Tianjin Agricultural University,Tianjin 300384,China;Cargill Animal Nutrition(Tianjin)Co.Ltd.Tianjin 300000,China)

机构地区：[1]天津师范大学生命科学学院,天津市动物多样性保护与利用重点实验室,天津300387 [2]天津农学院动物科学与动物医学学院,天津市农业动物繁育与健康养殖重点实验室,天津300384 [3]嘉吉饲料(天津)有限公司,天津300000

出　　处：《中国畜牧杂志》2021年第11期178-185,共8页Chinese Journal of Animal Science

基　　金：嘉吉饲料(天津)有限公司委托项目“植物成分与有机酸复合物对肉鸡生长性能的影响及其机制研究”;天津市武清区科技计划项目(WQKW202012);天津市“131”创新型人才团队(20180338)。

摘　　要：本试验旨在探究复合饲料添加剂对肉鸡生长性能、血清生化指标、ND抗体效价和肠道组织形态的影响。选取1日龄健康科宝肉鸡1344只,随机分成4组,每组12个重复,每个重复28只鸡。抗生素组在基础饲粮中添加10 mg/kg恩拉霉素,试验组在基础饲粮中分别添加0.8、1.0、1.5 g/kg复合饲料添加剂,试验期42 d。结果表明:1~42日龄,1.0 g/kg复合饲料添加剂组的耗料增重比低于抗生素组(P<0.01);14日龄、28日龄及42日龄时,试验组与抗生素组间的血清谷草转氨酶、谷丙转氨酶、碱性磷酸酶和乳酸脱氢酶活性均无显著差异;28日龄时抗生素组的ND抗体效价低于试验组(P<0.05),42日龄时抗生素组ND抗体效价高于0.8 g/kg复合饲料添加剂组(P<0.05);42日龄时,1.0 g/kg复合饲料添加剂组十二指肠绒毛高度/隐窝深度高于抗生素组(P<0.05)。综上,当复合饲料添加剂量为0.8 g/kg时,效果接近恩拉霉素饲喂效果,添加1.0 g/kg的效果优于恩拉霉素。This experiment was conducted to investigate the effects of compound feed additives on growth performance,serum biochemical indexes,ND antibody titer and intestinal morphology of broilers.A total of 13441-day-old healthy Cobb broilers were randomly divided into 4 groups with 12 replicates per group and 28 broilers per replicate.Antibiotic group was fed the basal diet supplemented with 10 mg/kg Enlamycin.The experimental groups were fed the basal diet supplemented with 0.8,1.0 g/kg and 1.5 g/kg compound feed additives,respectively.The experiment lasted for 42 days.The results showed that at d 1 to 42,the ratio of feed to gain in 1.0 g/kg group was significantly lower than that in antibiotic group(P<0.01);At d 14,28 and 42,there was no significant difference in serum aspartate aminotransferase,alanine aminotransferase,alkaline phosphatase and lactate dehydrogenase activities in the test group compared with the antibiotic group(P>0.05);At d 28,the titer of ND antibody in antibiotic group was significantly lower than that in experimental group(P<0.05);At d 42,the titer of ND antibody in antibiotic group was significantly higher than that in 0.8 g/kg groups(P<0.05);4.At d 42,the villus height/crypt depth of duodenum in 1.0 g/kg group was significantly higher than that in antibiotic group(P<0.05).To sum up,when the compound feed additives was supplemented with 0.8 g/kg,the effect is close to that of Enlamycin,and when the compound feed additives was supplemented with 1.0 g/kg,the effect is better than that of Enlamycin.

关 键 词：复合饲料添加剂 生长性能 血清生化指标 ND抗体效价 肠道组织形态 

分 类 号：S831.5[农业科学—畜牧学]