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军曹鱼幼鱼对赖氨酸需要量的初步研究
Research on Lysine Requirement of Juvenile Cobia(Rachycentron canadum)
【摘要】 选择体重为(14.7±0.3)g 的军曹鱼(Rachycentron canadum)幼鱼,平均分成5组,分别饲喂含赖氨酸为2.30%、2.53%、2.76%、2.99%和3.22%的等氮等能精制饲料。以增重率为指标,一元二次回归分析表明,军曹鱼对饲料中赖氨酸的适宜需要量为6.06g·(100gCP)-1。通过鱼体的必需氨基酸模式推算出其它必需氨基酸需要量,分别是:精氨酸4.97g·(100gCP)-1;色氨酸0.83g·(100gCP)-1;亮氨酸5.49g·(100gCP)-1;异亮氨酸3.12g·(100gCp)-1;蛋氨酸+胱氨酸2.66g·(100gCP)-1;苯丙氨酸+酪氨酸5.22g·(100gCP)-1;丝氨酸2.96g·(100gCP)-1;苏氨酸3.26g·(100gCP)-1;缬氨酸3.26g·(100gCP)-1。
【Abstract】 Five isonitrogenous and isoenergetic purified diets with different levels of ly- sine(2.30%,2.53%,2.76%,2.99% and 3.22%) were fed to juvenile cobia (Rachycen- tron canadum)(body weight 14.7g±0.3g) to test lysine requirement of the species. The results showed that the optimal requirement for lysine of cobia was 6.06g·(100 gCP)-1,and requirement for other amino acids were calculated by amino acid mode of the fish body to be:arginine 4.97g·(100gCP)-1;tryptophan 0.83g·(100gCP)-1;leu- cine 5.49g·(100gCP)-1;isoleucine 3.12g·(100gCP)-1;methionine+cystine 2.66g· (100gCP)-1;phenylalanine+tyrosine 5.22g·(100gCP)-1;serine 2.96g·(100 gCP)-1;threonine 3.26g·(100gCP)-1;valine 3.26g·(100gCP)-1.
【Key words】 cobia(Rachycentron canadum); lysine; requirement;
- 【文献出处】 长江大学学报(自科版)农学卷 ,Journal of Yangtze University(Natural Science Edition)Agricultural Science Volume , 编辑部邮箱 ,2005年01期
- 【分类号】S917.4
- 【被引频次】6
- 【下载频次】101