中国水产科学Issue(3)：541-559,19.DOI:10.3724/SP.J.1118.2014.00541
二甲基-β-丙酸噻亭对哲罗鱼生长性能和蛋白质代谢的影响
Effects of dietary dimethyl-β-propiothetin supplementation on growth performance and protein metabolism of Hucho taimen
摘要
Abstract
We evaluated the effects of dimethyl-β-propiothetin (DMPT) on growth, proximate muscle composition, and protein metabolism in Hucho taimen. Juvenile fish (n=1 800, average initial body weight:4.20±0.02 g) were cultured in a flow through system. The fish were randomly divided into six triplicate groups of 100 fish and fed diets containing different levels of DMPT (0, 0.25%, 0.5%, 0.75%, and 1.0%) for 56 d. Weight gain rate was highest at 0.2%DMPT supplementation (P<0.05). The optimum supplementation was 0.24% based on a polynomial regression analysis be-tween dietary DMPT level and weight gain rate. Serum total protein, albumin, and globulin increased significantly with 0.05% DMPT supplementation (P<0.05) and serum total protein, globulin and serum aspartate aminotransferase in-creased significantly with 0.2%DMPT supplementation (P<0.05). Meanwhile, liver and muscle protein levels and pro-tease activity in the digestive track increased significantly as dietary DMPT supplementation increased between 0.02%and 0.5%(P<0.05). The liver somatic index increased significantly with 0.05%DMPT supplementation. DMPT sup-plementation had no effect on muscle crude lipid, ash, amino acid profile, or serum alanine transaminase (P>0.05). Our results suggest that growth performance and protein levels were improved by dietary DMPT supplementation in taimen and 0.02%-0.5%DMPT supplementation can increase the protein storage in muscle and liver.关键词
哲罗鱼/DMPT/生长性能/肌肉成分/蛋白质代谢Key words
Hucho taimen/DMPT/growth performance/proximate muscle composition/protein metabolism分类
农业科技引用本文复制引用
王常安,徐奇友,李晋南,赵志刚,罗亮,王洋,尹家胜..二甲基-β-丙酸噻亭对哲罗鱼生长性能和蛋白质代谢的影响[J].中国水产科学,2014,(3):541-559,19.基金项目
农业部公益性行业科研专项经费项目(201003055) （201003055）
国家科技支撑计划项目(2012BAD25B10) （2012BAD25B10）
中央级公益性科研院所基本科研业务费项目(201103) （201103）
