摘要
以异育银鲫为试验对象,研究L-肉碱对其生长、肌肉组成和血液生化指标的影响。结果表明,饲料中添加L-肉碱均不同程度提高异育银鲫平均尾重,其中200mg·kg-1组增重显著高于对照组(P<0.05);与对照组相比,200mg·kg-1组肌肉水分含量显著降低(P<0.05),粗蛋白含量显著升高(P<0.05),200mg·kg-1(P<0.05)和250mg·kg-1(P<0.01)组粗脂肪含量显著降低;L-肉碱可提高异育银鲫生长激素含量,200mg·kg-1组比对照组高11.32%(P<0.05);150mg·kg-1组的血清总胆固醇(CHO)和尿素氮(BUN)含量显著低于对照组(P<0.05),200mg·kg-1和250mg·kg-1组降幅达到极显著水平(P<0.01);L-肉碱还可在一定程度上改善鱼体肌肉氨基酸含量和组成。研究表明,L-肉碱可促进异育银鲫生长,提高饲料转化率,改善鱼体质量风味,添加量以200mg·kg-1的效果最好。
The effects of L-carnitine on the growth performance, blood biochemical indices and muscle amino acid composition of Allogynogentic crucian carp were studied in this paper. The results indicated that adding L-camitine in feed could improve the average weight in different levels. The 200 mg·kg^-1 group were significantly higher than the control （P〈 0.05）. Compared with the control （0 mg·kg^-1）,the muscle moisture in the 200 mg·kg^-1 group reduced obviously （P〈0.05）, the crude protein raised prominent （P〈0.05）; and the crude fat of the 200mg·kg^-1（P〈0.05） and 250mg·kg^-1（P〈0.01） group decreased remarkable. The increase of growth hormone （GH）（11.32%,P〈0.05） in the 200 mg·kg^-1 group induced by L- camitine was also observed. The total cholesterol of Blood serum （CHO） and blood urea nitrogen （BUN） were decreased significantly in the 150 mg·kg^-1 group （P〈0.05）, especially in 200 and 250 mg·kg^-1 groups （P〈0.01）. The effects of L- camitine on the content and composition of muscle amino acid were not notable （P〉0.05）. In conclusion, L-carnitine could improve the growth performance of Allogynogentic crucian carp, the feed utilization and the quality flavor of muscle, especially at the level of 200 mg·kg^-1.
出处
《湖北农业科学》
北大核心
2009年第3期681-684,共4页
Hubei Agricultural Sciences
关键词
L-肉碱
异育银鲫
生长性能
肌肉品质
血液生化指标
L-carnitine
Allogynogenetic crucian carps
growth performance
muscle quality
serum biochemical.indices
