摘要
采用生长研究法来确定约草鱼的赖氨酸需要量,并对血清、肌肉和肝脏的游离赖氨酸迸行了检测。结果表明,按生长率最大值所确定的幼草鱼赖氨酸需要量为饲料中的1.611％按血清游离赖氨酸浓度最大值所确定的赖氨酸需要量为饲料的1.28％,明显低于生长研究法确定的结果。用肝脏和肌肉游离赖氨酸浓度为指标确定的赖氨酸需要量分别为饲料的1.46％和1.49％,这与生长研究法确定的赖氨酸需要量较接近。
To determine the requirement dose of lysine during stages of growth of Ctenopharyngodon idellus,the growth rates of fingerling grass carp which fed in different levels of lysine were tested.In addition,the free lysine levels of serum,liver and muscle of fingerling grass carp were detected.The results showed that the requirement dose of lysine in feedstuff was 1.61% which was determined by the results of the maximum of growth rates,and the requirement dose of lysine in feedstuff were 1.28%,1.46% and 1.49% which were determined by the results of free lysine levels of serum,liver and muscle respectively.The requirement dose of lysine in feedstuff which was determined by the results of free lysine levels of serum was lower than that the results of growth rates,while the requirement doses of lysine in feedstuff which were determined by the results of free lysine levels of liver and muscle were close to the results of growth rates.
出处
《生态科学》
CSCD
2003年第2期147-149,共3页
Ecological Science
关键词
草鱼
生长
赖氨酸需要量
营养需要
Ctenopharyngodon idellus
Lysine
Requirement dose
