投喂蚕豆对草鱼生长及肌肉营养特性分析

分别用配合饲料、浸泡蚕豆和发芽蚕豆喂养平均体重(1000±20)g草鱼70d,分析投喂蚕豆对草鱼生长及肌肉营养的影响。结果表明,配合饲料组、浸泡蚕豆组和发芽蚕豆组的草鱼增重率分别为79.5%、40.32%和50.10%,饵料系数分别为2.11、4.78和4.31,投喂蚕豆降低了草鱼增重率(P<0.05),显著增加了饵料系数(P<0.05)。与配合饲料组相比,浸泡蚕豆组和发芽蚕豆组肌肉中粗脂肪和粗蛋白含量显著降低(P<0.05)。浸泡蚕豆组和发芽蚕豆组的必需氨基酸含量、鲜味氨基酸含量、氨基酸总量比配合饲料组显著提高(P<0.05)。投喂蚕豆降低了草鱼的生长性能,但是显著提高了草鱼肌肉品质。投喂发芽蚕豆的效果要优于投喂浸泡蚕豆。

Analysis of feeding broad bean on growth and flesh nutrition of grass carp Ctenopharyngodon idellus

In this study, three groups of grass carp with body weight of （ 1 000±20） g were fed with formulated feed, immersed broad bean and sprouted broad bean for 70 days to analyze the effects of feeding broad bean on growth performance and flesh nutrition. Growth rates of the three groups were 79.5% , 40.32%, 50.10%, and FCR were 2.11, 4.78 and 4.31 respectively. The growth rate was decreased （P〈0.05） and FCR was significantly increased （P〈0.05） by feeding broad bean. Compare to grass carp fed with formulated feed, crude protein, crude fat and water-loss rate of grass carp fed with immersed broad bean or sprouted broad bean decreased significantly （P〈0.05）. The essential amino acids （EAA）, flavor amino acids（FAA ） and total amino acids（TAA） in muscle of grass carp fed with immersed broad bean or sprouted broad were higher than grass carp fed with formulated feed （P〈0.05）. Results above indicated that growth of grass carp was lower but flesh quality of grass carp was significantly higher by feeding broad bean. Feeding sprouted broad bean had better effects than feeding immersed broad bean on grass carp.