5个黄颡鱼家系组幼鱼生长、体组成和消化酶活力的比较  

Comparison of Growth, Body Composition and Digestive Enzyme Activities on Five Families of Yellow Catfish

作　　者：秦钦[1,2] 陈校辉[1] 蒋广震[2] 王明华[1] 张世勇[1] 钟立强[1] 刘文斌[2] 潘建林[1] Qin Qin 1,2, Chen Xiaohui 1, Jiang Guangzhen 2 ,Wang Minghua 1, Zhang Shiyong 1, Zhong Liqiang 1,Liu Wenbin2, Pan Jianlin1(1 Jiangsu Institute of Freshwater Fisheries, Nanjing, 210017; 2 Key Lab of Aquatic Animal Nutrition and Feed Science of Jiangsu Province, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 21009)

机构地区：[1]江苏省淡水水产研究所,南京210017 [2]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,南京210095

出　　处：《基因组学与应用生物学》2018年第2期768-773,共6页Genomics and Applied Biology

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)资助

摘　　要：选取滆湖、石臼湖和太湖野生黄颡鱼亲本,设计建立5个繁育家系组,分别为自交组Ⅰ（G♂×G♀）、Ⅱ（S♂×S♀）和Ⅲ（T♂×T♀）,杂交组Ⅳ（G♂×S♀）和Ⅴ（S♂×T♀）。家系组苗种培育至70 d时,每个家系组取鱼600尾,设3个平行,开展养殖试验,试验时间60 d,试验结束时测量各家系组黄颡鱼体重,计算体重绝对增长率（AGRW）、增重率（WGR）、饲料系数（FCR）、存活率（SR）等,并测定胃肠道消化酶生化指标。试验表明：各家系组间AGRW、WGR、FCR及存活率指标均差异显著（p〈0.05）。家系组Ⅳ的AGRW和WGR最高,分别为0.126±0.005、316.11±15.67,与其母本群体自交繁育家系组Ⅱ比较,在两个指标上均差异显著（p〈0.05）。家系组Ⅳ胃、肠蛋白酶活力均显著高于其他各组（p〈0.05）,各家系组淀粉酶活力、脂肪酶活力差异不显著（p〉0.05）。研究得出,家系组Ⅳ（G♂×S♀）,在饲料蛋白利用方面优于其他各组,促进了饲料利用和鱼体生长速度的提高,具有较好的生长表型,是具有开发潜力的优势繁育组合。We established 5 breeding families, of which the parents were wild Yellow catfish that come from Ge lake, Shijiu lake and Tai lake, they were divided into inbred group Ⅰ（G♂×G♀）, Ⅱ（S♂×S♀）, Ⅲ（T♂×T♀）and hybrid group Ⅳ（G♂×S♀）, Ⅴ（S♂×T♀） respectively. When juvenile Yellow catfish were on 70 th days, we chose 600 Yellow catfish individuals from each family and set up 3 parallel groups, and the experiment was finished after 60 days. The body weight, absolute growth rate of body weight（AGRW）, weight gain rate（WGR）,feed conversion ratio（FCR）, survival rate（SR） and gastrointestinal digestive enzyme activities data would be collected at 60 th days. As a result, there were significant differences of AGRW, WGR, FCR and SR in different families（p〈0.05）. AGRW and WGR of family Ⅳ were highest, with 0.126 ±0.005, 316.11 ±15.67 respectively, which were significantly different with those of family Ⅱ. The protease activity of stomach and intestine of family Ⅳ were significantly higher than other families（p〈0.05）. There were not significant difference on amylase and lipase among the different families（p〉0.05）. To conclude, utilization of dietary protein in family Ⅳ（G♂×S♀） was better thanother families, which might promote feed utilization and growth rate of catfish as well as a better growth phenotype, and could represent a breeding combination with potential development.

关 键 词：黄颡鱼 杂交 生长性能 

分 类 号：S917.4[农业科学—水产科学]