投喂青料和添加剂对草鱼生长和脂肪代谢的影响

应用青菜、旱草青料、配合饲料以及在配合饲料中添加维生素B_6、蛋氨酸和亚油酸对草鱼的生长、脂肪代谢进行了试验。结果表明,投喂青菜和旱草青料的鱼类体腔和肝脏中含脂量最低,与投喂配合饲料组比较,差异性十分显著(P<0.01)。肝脏中的蛋白质含量也以投喂青菜和旱草青料的最高;血清中甘油三脂和胆固醇含量以投喂青菜和旱草青料组为最低。在配合饲料中分别添加维生素B_6、蛋氨酸和亚油酸的投喂试验中,发现投喂旱草青料组和添加维生素B_6组的鱼,体腔和肝脏中的含脂量最低,而投喂配合饲料的含量最高。投喂含70%青料(菜)组的鱼类生长最快,投喂配合饲料的最慢。

EFFECTS OF FEEDING GREEN FODDER AND SUPPLEMENETAL AGENTS ON GROWTH RATE AND FAT METABOLISM IN GRASS CARP(CTENOPHARYNGNGODON IDELLUS)

The effect on growth rate and fat metabolism in grass carp fed with vegetable,green fodder, formulate diet and adding vitamine B_6, methionine, linoleic acid were studied. Theresults indicated that there was a significant difference between feeding green fodder and feedingformulate diet (P<0.01) The fat contents in abdominal cavity and liver, the levels of triglyceridae and cholesterol inserum of fish fed with formulate diet were the highest, but the protein contents in liver of fish fedwith formulate diet was the lowest of three meals. The tests of feeding formulate diet added with vitamine B_6, methionine and linoleic acid il-lustrated that the contents of crude fat in liver and abdominal cavity of fish fed withsupplemental vitamine B_6, and green fodder were lowest and that fed with formulate diet werehighest. The growth rate in fish fed with 70% green fodder were fast and with the formulate dietwere slow.