文章摘要
宋长友,任鸣春,谢骏,戈贤平,刘波,周群兰,缪凌鸿,陈汝丽,夏斯蕾,张武肖,赵振新.不同生长阶段团头鲂的赖氨酸需要量研究[J].上海海洋大学学报,2016,25(3):396-405.
SONG Changyou,REN Mingchun,XIE Jun,GE Xianping,LIU Bo,ZHOU Qunlan,MIAO Linghong,CHEN Ruli,XIA Silei,ZHANG Wuxiao,ZHAO Zhenxin.Study of lysine requirement in different growth stages of blunt snout bream(Megalobrama amblycephala)[J].Journal of Shanghai Ocean University,2016,25(3):396-405.
不同生长阶段团头鲂的赖氨酸需要量研究
Study of lysine requirement in different growth stages of blunt snout bream(Megalobrama amblycephala)
投稿时间:2015-04-10  修订日期:2015-12-17
DOI:10.12024/jsou.20150401393
中文关键词: 团头鲂  不同生长阶段  赖氨酸  需要量  生长
英文关键词: Megalobrama amblycephala  different growth stage  lysine  requirement  growth performance
基金项目:公益性行业(农业)科研专项经费(201003020);现代农业产业技术体系建设专项资金项目(CARS-46)
作者单位E-mail
宋长友 南京农业大学无锡渔业学院, 江苏 无锡 214081  
任鸣春 中国水产科学研究院淡水渔业研究中心, 江苏 无锡 214081  
谢骏 南京农业大学无锡渔业学院, 江苏 无锡 214081
中国水产科学研究院淡水渔业研究中心, 江苏 无锡 214081 
 
戈贤平 南京农业大学无锡渔业学院, 江苏 无锡 214081
中国水产科学研究院淡水渔业研究中心, 江苏 无锡 214081 
 
刘波 南京农业大学无锡渔业学院, 江苏 无锡 214081
中国水产科学研究院淡水渔业研究中心, 江苏 无锡 214081 
liub@ffrc.cn 
周群兰 中国水产科学研究院淡水渔业研究中心, 江苏 无锡 214081  
缪凌鸿 中国水产科学研究院淡水渔业研究中心, 江苏 无锡 214081  
陈汝丽 中国水产科学研究院淡水渔业研究中心, 江苏 无锡 214081  
夏斯蕾 南京农业大学无锡渔业学院, 江苏 无锡 214081  
张武肖 南京农业大学无锡渔业学院, 江苏 无锡 214081  
赵振新 南京农业大学无锡渔业学院, 江苏 无锡 214081  
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中文摘要:
      为探讨不同生长阶段团头鲂的赖氨酸需要量,以不同生长阶段的团头鲂[规格Ⅰ:(52.49±0.18)g,规格Ⅱ:(101.85±1.8)g]为研究对象,配制赖氨酸含量为1.29%、1.71%、2.09%、2.48%、2.88%和3.27%的等氮等能饲料进行10周养殖实验。结果表明:与对照组相比,(1)2.88%和3.27%组显著提高了规格Ⅰ的增重率、特定生长率和蛋白质效率,显著降低了饵料系数和摄食量;2.48%组显著提高了规格Ⅱ的特定生长率,显著降低了饵料系数,3.27%组提高了规格Ⅱ的特定生长率和摄食量;(2)2.88%和3.27%组分别显著提高了规格Ⅰ和规格Ⅱ的鱼体粗脂肪含量;(3)2.48%组显著降低了规格Ⅰ和规格Ⅱ的血清谷丙转氨酶活性,显著提高了规格Ⅰ的尿素含量;3.27%组显著提高了规格Ⅱ的血清白蛋白、总蛋白和球蛋白含量;表明适宜水平赖氨酸可能对鱼体肝脏具有保护作用,能够提高其代谢及免疫力;(4)2.48%、2.88%和3.27%组均显著提高了规格Ⅰ和规格Ⅱ的血清赖氨酸含量,显著降低了规格Ⅰ的血清精氨酸和总必需氨基酸含量。以鱼体特定生长率为评价指标,经折线模型回归分析得到规格Ⅰ和规格Ⅱ的最适赖氨酸需要量分别为饲料干重的2.07%和2.19%(饲料粗蛋白含量的6.27%和6.63%)。
英文摘要:
      A 10-week feeding trial was conducted to investigate the dietary lysine requirement of blunt snout bream (Megalobrama amblycephala) with initial body weight of 52.49±0.18 g (size Ⅰ) and 101.85±1.85 g (size Ⅱ). Six isonitrogenous and isoenergetic semi-purified diets were formulated that containing graded lysine levels (1.29%, 1.71%, 2.09%, 2.48%, 2.88% and 3.27%of dry weight). The results showed thatweight gain rate (WGR), specific growth rate (SGR) and protein efficiency ratio (PER) in fish of size Ⅰ fed with diets containing 2.88% and 3.27% lysine were significantly higher than that of the control group, while the reverse pattern was observed in feed conversion ratio (FCR) and feed intake (FI). The 2.48% lysine diet significantly increased SGR and decreased FCR, meanwhile, 3.27% lysine diet significantly increased SGR and FI in fish of size Ⅱ.The diet with 2.88% and 3.27% lysine significantly increased body fat content in fish of size Ⅰ and size Ⅱ, respectively.Significantly decreased ALT in plasma of size Ⅰ and Ⅱand increased Urea of size Ⅰ were observed fed with 2.48% lysine diet, while increased ALB, TP and GLB in plasma content of size Ⅱ fed with 3.27% lysine diet, which indicate that proper lysine in diet might protect the liver and enhance the metabolism and immunity ability compare with the control group. The 2.48%, 2.88% and 3.27% lysine diet significantly increased the plasma lysine content of size Ⅰ and Ⅱ, and decreased the plasma arginine and total essential amino acids content of size Ⅰ. Based on the broken-line regression analysis of SGR, the optimal dietary lysine requirements of size Ⅰ and Ⅱ were estimated to be 2.07% and 2.19% (6.27% and 6.63% of dietary protein), respectively.
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