动物营养学报2016，Vol.28Issue(9)：2771-2777,7.DOI:10.3969/j.issn.1006-267x.2016.09.015
草鱼幼鱼对饲料中核黄素的需要量
Dietary Riboflavin Requirement of Juvenile Grass Carp (Ctenopharyngodon idellus)
摘要
Abstract
A feeding trial was carried out to estimate the dietary riboflavin requirement of juvenile grass carp ( Ctenopharyngodon idellus) based on growth performance, hepatopancreas D-amino acid oxidase ( D-AAO) and intestinal digestive enzyme activities and body composition. Six purified diets were formulated to contain 0.56, 2.32, 4.08, 5.78, 9.28 and 19.35 mg/kg riboflavin, respectively. Juvenile grass carp with an average initial body weight of (11.21±0.16) g were fed the diets for 8 weeks, and each diet had 3 replicates with 20 fish per replicate. The results showed as follows:survival rate in 0.56 and 2.32 mg/kg groups was significantly lower than that in other groups ( P<0.05) . Weight gain rate ( WGR) , specific growth rate ( SGR) , feed effi-ciency rate ( FER) , hepatopancreas D-AAO and intestinal digestive enzyme activities of fish were firstly in-creased and then seemed to stabilize with increasing dietary riboflavin content, and the biggest values of them appeared when dietary riboflavin content was 5.78 mg/kg. Hepatosomatic index ( HSI) in 5.78 mg/kg group was significantly higher than that in 0.54 mg/kg group (P<0.05). Viscerasomatic index (VSI), condition factor ( CF) and the contents of whole body moisture, crude protein, crude lipid and ash were not significantly affected by dietary riboflavin content (P>0.05). Broken line regression analysis shows that dietary riboflavin requirement of juvenile grass carp with the best growth and hepatopancreas D-AAO activity is 5. 54 and 5.99 mg/kg, respectively.关键词
草鱼/核黄素/需要量/生长/D-氨基酸氧化酶Key words
grass carp ( Ctenopharyngodon idellus)/riboflavin/requirement/growth/D-amino acid oxidase分类
农业科技引用本文复制引用
姜建湖,陈建明,沈斌乾,潘茜,孙丽慧,黄爱霞..草鱼幼鱼对饲料中核黄素的需要量[J].动物营养学报,2016,28(9):2771-2777,7.基金项目
现代农业产业技术体系专项( CARS-46-21) （ CARS-46-21）
