家畜生态学报2018，Vol.39Issue(1)：25-30,6.
不同蛋白酶对肉鸡屠宰性能、器官指数、肠道形态结构及养分消化率的影响
Effects of Different Protease Supplementation on Slaughter Performance, Organ Index, Intestinal Villi Structure and Nutrient Metabolizability of Broilers
摘要
Abstract
The experiment was conducted to study effets of diet supplemented with different protease on slaughter performance,organ index,intestinal villi structure and nutrient metabolizability of broilers.Single facterial design was uesd.There were 3 experimental groups:Control group (basal diet,CP was 18.56％),PT125TM group (Control group +PT125TM) and BFB group (Control group +100 g/t BFB).Three hundred and sixty 21-day broilers were randomly assigned to 3 groups with 6 replicates per group and 20 broilers per replicate (half male and half female).The experiment lasted for 21 d.The results were as follows:(1) Different protease supplementation in diet didn't affect slaughter performance.But pancreas index of broilers in the BFB group was significantly higher than that in the control group(P＜0.05).Gizzard index of broilers in the BFB group was significantly higher than that in the control group and PT125TM group (P＜0.05).There was no significant difference about the other organ indexes between groups.(2) Diet supplemented with defferent protease had no effects of duodenum and jejunum villi structure.Ileum crypt depth in the BFB group was significantly lower than that in the control group and PT125TM group (P＜0.05).(3) The metabolizabilities of Ile,Gly and TAA in the BFB group were significantly higher than those in the control group and PT125TM group (P＜0.05).In conclusion,it is beneficial to improve intestinal villi structure,maintain the intestinal health,promote the digestion and absorption of nutrients,and improve the production performance for protease supplementation in the diet of AA broilers during later period.关键词
蛋白酶/肉鸡/屠宰性能/器官指数/肠道形态/养分消化率Key words
protease/broiler/slaughter performance/organ index/intestinal villi structure/nutrient metabolizability分类
农业科技引用本文复制引用
侯振平,吴端钦,蒋桂韬,王满生,王郝为,刘延杰,陈宁波,戴求仲..不同蛋白酶对肉鸡屠宰性能、器官指数、肠道形态结构及养分消化率的影响[J].家畜生态学报,2018,39(1):25-30,6.基金项目
中国农业科学院农业科学与技术创新工程专项资金(ASTIP-IBFC02) （ASTIP-IBFC02）
