卡特拉鱼含肉率和肌肉生化成分的分析

MUSCLE CONTENT AND ANALYSIS OF BIOCHEMICAL COMPOSITION OF MUSCLE IN CATLA CATLA

测定１～２龄卡特拉鱼含肉率，分析同季节不同年龄卡特拉鱼肌肉生化成分表明，随着年龄增长，鱼体肌肉水分含量逐渐减少，而蛋白质和脂肪含量逐渐增加；灰分及无氮浸出物含量变幅很小；氨基酸总含量有一定幅度变化。但它们均无一定规律。同一年龄夏季鱼肌肉水分含量比冬季低，而蛋白质、脂肪、灰分和无氮浸出物含量均比冬季高。同塘饲养的１龄卡特拉鱼和鳙鱼肌肉各生化成分均较为一致。２龄卡特拉鱼肌肉除水分和灰分含量稍低于鳙鱼外，其余各成分含量均稍高于鳙鱼。卡特拉鱼肌肉的水分与蛋白质。

Muscle content in 1～2 year old Catla catla was determined. Biochemical compositions of muscle were analysed for the fish of same seasons but different ages. The water content of muscle decreased gradually,but the contents of protein and fat increased with the increase of age. The contents of ash and non nitrogen extract had a little change,while the total content of amino acid had some change with the increase of age. However,there was no regularity among these three contents. For the same age fish,the water content of muscle in summer was lower than that of muscle in winter,while the contents of protein,fat,ash and non nitrogen extract of muscle in summer were higher than those of muscle in winter. The biochemical composition of muscle of 1 year old Catla catla and Aristichthys nobilis was relatively indentical. For 2 year old fish,biochemical composition of muscle of Catla catla was higher than that of A.nobilis except for the contents of water and ash. The changes in water and protein contents and also in water and fat content in Catla catla muscle were of a negative correlation.