文章摘要
何吉祥,潘庭双,蒋阳阳,吴明林,陈静,武松,崔凯.饲料糖蛋白质比和投喂率对异育银鲫生长及脂质代谢指标的影响[J].上海海洋大学学报,2016,25(2):198-206
饲料糖蛋白质比和投喂率对异育银鲫生长及脂质代谢指标的影响
Effects of dietary carbohydrate to protein ratios and feeding rate on growth and lipid metabolism index of Carassius auratus gibelio
投稿时间:2015-08-08  修订日期:2015-10-06
DOI:10.12024/jsou.20150801525
中文关键词: 异育银鲫  糖蛋白质比  投喂率  生长性能  脂质代谢
英文关键词: Carassius auratus gibelio  carbohydrate to protein ratio  feeding rate  growth performance  lipid metabolism
基金项目:安徽省农业科学院科技创新团队建设项目(13C0506);现代农业产业技术体系建设专项资金(CARS-46-34)
作者单位E-mail
何吉祥 安徽省农业科学院水产研究所, 安徽 合肥 230031  
潘庭双 安徽省农业科学院水产研究所, 安徽 合肥 230031  
蒋阳阳 安徽省农业科学院水产研究所, 安徽 合肥 230031  
吴明林 安徽省农业科学院水产研究所, 安徽 合肥 230031  
陈静 安徽省农业科学院水产研究所, 安徽 合肥 230031  
武松 安徽省农业科学院水产研究所, 安徽 合肥 230031  
崔凯 安徽省农业科学院水产研究所, 安徽 合肥 230031 cuikai66@163.com 
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中文摘要:
      为研究饲料糖蛋白质比(C/P)和投喂率对异育银鲫生长和脂质代谢指标的影响,实验设计3组C/P水平为C24/P42、C32/P36、C40/P30的等能等脂饲料,每组饲料设2%、3%、4%各3个投喂水平,实验共9组,每组3个重复,每个重复放养24尾初始体质量为(2.40±0.10)g的异育银鲫,每天投喂两次,实验期50 d。结果表明:(1)C24/P42组终末体重(FBW)、特定生长率(SGR)、饲料转化效率(FCE)显著高于而蛋白质效率比(PER)显著低于C40/P30组(P<0.05),C32/P36与C24/P42组差异不显著。4%组FBW、SGR显著高于3%和2%组(P<0.05)。(2)鱼体组成仅受投喂率显著影响,3%、4%组全鱼及胴体水分含量显著低于而脂肪含量显著高于2%组(P<0.05),3%与4%组差异不显著。(3)随着饲料C/P水平上升,肝脏苹果酸酶(ME)活性先升高后下降(P<0.05),肝酯酶(HL)与脂蛋白酯酶(LPL)活性呈相反变化趋势,但总酯酶(TLP)活性无显著变化,脂质过氧化物(LPO)含量显著上升(P<0.05)。随着投喂率增加,3%与4%组ME、HL、LPL、TLP活性及LPO含量显著高于2%组(P<0.05)。综合生长和脂质代谢指标分析结果,异育银鲫适宜的饲料C/P水平和投喂率分别为C32/P36和4%。
英文摘要:
      The present study was conducted to investigate the effects of dietary carbohydrate to protein ratios (C/P) and feeding rate on growth and lipid metabolism of juvenile Carassius auratus gibelio. Three isolipidic and isoenergetic diets containing C24/P42 (24% carbohydrate to 42% protein), C32/P36 and C40/P30 were formulated, and each diet was fed twice (08:30 and 16:30) daily at the rate of 2%, 3% and 4% of the fish wet body weight, respectively. The fish (initial body weight 2.40±0.10 g) were randomly assigned to 9 groups with triplicates per group and 24 fish per replicate, the experiment lasted for 50 days. The results showed that fish fed with C40/P30 diets, the final body weight (FBW), the special growth rate (SGR) and feed conversion efficiency (FCE) were significantly lower but protein efficiency ratio (PER) was significantly higher than those fed with C24/P42 diets (P<0.05). However, there were no significant differences between the fish fed with the C24/P42 and C32/P36 diets. As feeding rate increased, FBW, SGR increased significantly (P<0.05), while FCR, PER of fish fed at the rate of 3% and 4% had no significant difference but were higher than those fed at the rate of 2%. CF increased significantly with increased feeding rate. The body composition of the fish was significantly affected only by feeding rate. Fish fed at the rate of 3% and 4%was significantly lower in moisture and ash contents of the whole-body, moisture content of carcass but higher lipid content and liver glycogen content than that of fish fed at the rate of 2%, and there was no significant difference between fish fed at the rate of 3% and 4%. Fish fed with the C32/P36 diet had the highest activities of malic enzyme (ME), lipoprotein lipase (LPL) but the lowest activities of hepatic lipase (HL) in liver than those fed with the other two C/P ratios diets. Increasing dietary C/P ratios significantly increased the liver lipid (LPO) content. Fish fed at the rate of 3% and 4% had the higher ME, HL, LPL, total lipase (TLP) activities and LPO content than those fed at the rate of 2%, increasing feeding rate increased the lipid content and the degree of peroxidation damage in the fish body. According to the above observations, the C32/P36 diet is suitable for juvenile Carassius auratus gibelio, and its feeding rate is at 4%.
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