动物营养学报2018，Vol.30Issue(3)：999-1006,8.DOI:10.3969/j.issn.1006-267x.2018.03.024
维生素D添加水平对养成中期吉富罗非鱼生长性能、体组成和血清生化指标的影响
Effects of Vitamin D on Growth Performance, Body Composition and Serum Biochemical Indices of Genetically Improved Farmed Tilapia (Oreochromis niloticus) in Growth Mid-Stage
摘要
Abstract
A total of 270 genetically improved farmed tilapia (GIFT,Oreochromis nilticus) with an average initial body weight of (78.58±1.93) g were randomly distributed into 6 groups consisting of 3 replicates (15 fish per replicate),and each group was fed a diet with vitamin D supplemental level was 0 (basal diet),200,400,800,1 600 or 3 200 IU/kg for 12 weeks.The contents of crude protein and crude lipid in six diets were all 30％ and 7.6％,respectively.After 12 weeks,the growth performance,body composition and serum biochemical indices were measured to detect the suitable supplemental level of vitamin D in the diet of GIFT.The results showed as follows:the weight gain rate of fish in vitamin D-added groups was significantly higher than that of fish in control group (P＜0.05),and the feed efficiency in 200,400,800 and 1 600 IU/kg groups was significantly higher than that of fish in control group (P＜0.05).The contents of crude protein and moisture in whole body had no significant differences among various groups (P＞0.05).Moreover,the crude lipid content in whole body was firstly increased and then decreased as the dietary vitamin D supplemental level increasing,and it was the highest in 200 IU/kg group which was significantly higher than that in other groups (P＜0.05).The ash content in whole body of fish in vitamin D-added groups was significantly higher than that in control group (P＜0.05),but no significant differences existed in the vitamin D-added groups (P＞0.05).With the dietary vitamin D supplemental level increasing,serum alkaline phosphatase activity was firstly increased and subsequently decreased with the dietary vitamin D supplemental level increasing,and it was significantly higher in 200,400,800 IU/kg groups than that in control group (P＜0.05).Serum total cholesterol,albumin and total protein contents reached the highest in 200 IU/kg group,and it significantly higher than those in control group (P＜0.05).In conclusion,the appropriate dietary vitamin D supplementation promotes the growth of GIFT in growth mid-stage,but high supplemental levels of vitamin D may cause liver damage and affect fat metabolism.According to the regression analysis with the weight gain rate as the evaluation index,the suitable vitamin D supplemental level for GIFT in growth mid-stage is 259.8 IU/kg diet.关键词
吉富罗非鱼/维生素D/需要量/生长/血清生化指标Key words
genetically improved farmed tilapia (GIFT, Oreochromis nilticus)/vitamin D/requirement/growth/serum biochemical indices分类
农业科技引用本文复制引用
喻丽娟,文华,周书华,田娟,蒋明,吴凡,刘伟,杨长庚,陆星..维生素D添加水平对养成中期吉富罗非鱼生长性能、体组成和血清生化指标的影响[J].动物营养学报,2018,30(3):999-1006,8.基金项目
现代农业产业技术体系专项资金资助(CARS-46) （CARS-46）
