日粮蛋白含量及家系对黄颡鱼幼鱼生长性能和肝脏IGF-I mRNA表达水平的影响  

Effects of families and feed protein contents on growth performance and hepatic expression of IGF-I mRNA of juvenile yellow catfish

作　　者：秦钦[1,2] 陈校辉 潘建林[1] 刘文斌[3] QIN Qin;CHEN Xiaohui;PAN Jianlin;LIU Wenbin(Jiangsu Institute of Freshwater Fisheries, Nanjing 210017, Jiangsu, China;Wuxi Fishery College, Nanjing Agricultural University, Wuxi 214081, Jiangsu, China;Key Lab of Aquatic Animal Nutrition and Feed Science of Jiangsu Province, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, Jiangsu,China)

机构地区：[1]江苏省淡水水产研究所,江苏南京210017 [2]南京农业大学无锡渔业学院,江苏无锡214081 [3]南京农业大学动物科技学院江苏省水产动物营养重点实验室,江苏南京210095

出　　处：《上海海洋大学学报》2018年第2期190-195,共6页Journal of Shanghai Ocean University

基　　金：现代农业产业技术体系专项资金(CARS-46);江苏省农业重大新品种创制项目(PZCZ201742);江苏省农业科技自主创新资金项目CX(11)1036

摘　　要：采用2×2实验设计,研究不同家系种质(G♂×S♀、S♂×S♀)和日粮蛋白含量(37%、40%)对黄颡鱼幼鱼生长性能及肝脏IGF-I m RNA表达水平的影响及其交互作用。各试验组设3个平行,养殖60 d。分析结果显示:日粮蛋白含量、家系两因素对末重、增重率、特定生长率及IGF-I m RNA的相对表达量等指标均影响显著(P<0.05),两因素在对上述指标的影响上均不存在交互作用。P40/(G♂×S♀)获得最大末重、增重率和IGF-I基因表达量。结果表明黄颡鱼幼鱼可通过种质筛选和日粮蛋白营养调节达到更好的养殖效果,G♂×S♀家系在高蛋白日粮投喂下,获得最佳生长性能。This study was conducted to investigate the effects of families（ G ♂ × S♀,S ♂ × S♀） and feed protein contents（ 37%,40%） on growth performance and hepatic expression IGF-I of juvenile yellow catfish. Fish were fed for 60 days in 3 reduplications. Results： the final weight,weight gain,specific growth rate and the hepatic IGF-I expression were significantly affected by families and dietary protein contents（ P〈 0. 05）. There was not interaction between the two factors in these indexes. P40/（ G ♂ × S♀） group obtained the maximum final weight,weight gain rate and the highest hepatic IGF-I expression level. The results showed that juvenile yellow catfish achieved better breeding effect through family breeding and feed protein nutrition regulation. G ♂ × S♀） in high protein diet feeding gained the best growth performance.

关 键 词：黄颡鱼 日粮蛋白含量 家系 生长性能 IGF-I表达 

分 类 号：S917[农业科学—水产科学] S965.1