不同磷酸二氢钙含量饲料中添加植酸酶对建鲤生长、磷利用、体组成和消化酶活性的影响  

Effects of supplementation of phytase in diets with various monocalcium phosphate levels on growth,phosphorus utilization,body composition and digestive enzyme activity of Jian carp(Cyprinus carpio var.Jian)

作　　者：秦巍仑[1] 杨毅[1,2] 冷向军[1,3,4,5] 吴江 李小勤[1] 

机构地区：[1]上海海洋大学水产与生命学院,上海201306 [2]通威股份有限公司四川水产工程技术研究中心,四川成都610081 [3]上海海洋大学农业部淡水水产种质资源重点实验室,上海201306 [4]上海市水产养殖工程技术研究中心,上海201306 [5]上海高校知识服务平台上海海洋大学水产动物遗传育种中心(ZF1206),上海201306

出　　处：《上海海洋大学学报》2015年第3期383-390,共8页Journal of Shanghai Ocean University

基　　金：上海市重点学科建设项目(Y1101);通威水产工程技术中心开放课题(09-11)

摘　　要：以初始体重为(12.8±0.2)g的建鲤(Cyprinus carpio var.Jian)为研究对象,探讨了在不同磷酸二氢钙含量饲料中添加包被酸性植酸酶对建鲤生长性能、磷利用率、体组成和肠消化酶活性的影响。共设5组饲料,即磷酸二氢钙含量分别为2.5%、2.0%、1.6%的3组饲料,及在2.0%、1.6%磷酸二氢钙饲料中添加2 000U/kg植酸酶的两组饲料。90 d的养殖实验结果表明:2.5%磷酸二氢钙组具有最高鱼体增重率,最低饲料系数和最低全鱼脂肪含量;1.6%磷酸二氢钙组的生长性能最低,全鱼脂肪含量最高;在2.0%磷酸二氢钙饲料中添加植酸酶,对生长、磷储积率和全鱼组成均没有显著影响,但提高了磷表观消化率和肠脂肪酶活性;在1.6%磷酸二氢钙饲料中添加植酸酶显著提高了鱼体增重率、磷表观消化率、磷储积率和全鱼粗蛋白、灰分含量(P<0.05),降低了饲料系数和全鱼粗脂肪含量(P<0.05),但对肠消化酶活性没有显著影响。上述结果表明:在含1.6%磷酸二氢钙饲料中添加包被酸性植酸酶可促进建鲤生长,降低鱼体粗脂肪含量,提高磷表观消化率和磷储积率。The present study was conducted to evaluate the effects of supplementation of coated acid phytasein diets with various monoealcium phosphate levels on the growth performances, phosphorus （P） utilization,body composition and digestive enzyme activity of Jian carp （Cyprinus carpio var. Jian） with initial bodyweight of （12.8±0.2） g. Five diets were prepared as diets supplemented with 2.5% , 2.0% , or 1.6%Ca（H2PO4） 2, and diets with 2 000 U/kg phytase supplementation in 2.0% or 1.6% Ca （ H2PO4 ） 2 diet.After 90 days feeding, the fish fed 2.5% Ca（ H2PO4 ）2 diet had the highest weight gain （WG）, the lowestfeed conversion ratio （FCR） and body lipid content, and the fish fed 1.6% Ca（H2PO4） 2 diet had the lowestgrowth and the highest body lipid content. The supplementation of phytase in 2.0% Ca（HPO4） z diet did notsignificantly affect the growth, P deposition and body composition, but improved P apparent digestibility andintestinal lipase activity. The supplementation of phytase in 1.6% Ca（Id2PO4）2 diet significantly improvedthe growth, contents of body protein and ash,P deposition, and P apparent digestibility, and decreased FCRand body lipid content, but had no effects on intestinal digestive enzyme activity. Results above showed thatthe supplementation of phytase in 1.6% Ca（ H2PO4 ）2 diet could improve the growth and P utilization, anddecrease the body lipid content of Jian carp.

关 键 词：植酸酶 建鲤 生长 磷 消化率 体组成 消化酶 

分 类 号：S963.73[农业科学—水产养殖]