【摘要】 为考察不同菜粕水平(0~50.0%)对草鱼生长、饲料利用、血清生化指标和毒素残留的影响。对不同体重的草鱼(初始平均体重约5.0g和18.7g)分别进行了8周的饲养试验,结果表明:随着菜粕水平的升高,不同体重的草鱼增重率、特定生长率、饲料转化率、蛋白质效率均有所下降,但在0、10.0%、20.0%和30.0%组没有显著差异;草鱼(初始平均体重约5.0g)肌肉和肝脏中硫代葡萄糖甙、唑烷硫酮和异硫氰酸盐的含量随饲料中菜粕水平的升高而升高;不同菜粕水平对草鱼(初始平均体重约18.7g)血清中的谷草转氨酶、谷丙转氨酶、谷草转氨酶/谷丙转氨酶、总蛋白、白蛋白、球蛋白、白蛋白/球蛋白、尿素氮、血糖、肌肝、T3和T3/T4均无显著影响,而对T4和T3+T4有显著影响,并且对肝脏细胞有不同程度的损害。通过两个试验的研究认为草鱼幼鱼饲料中菜籽粕用量以少于30.0%为宜。更多还原

【Abstract】 Two 8-week feeding trials were conducted to investigate effects of different rapeseed meal levels(0.0-50.0%) on growth, feed utilization,blood biochemical indices and toxins residues in grass carp(Ctenoparyngodon idellus)(average body weight were about 5.0 g and 18.7 g).The results showed that: with the increasing of the rapeseed meal levels,the weight gain rate,specific growth rate,feed efficiency ratio and protein efficiency ratio decreased,but no significant difference was observed in 0.0,10.0%,20.0% and 30.0% groups.Glucosinolate(GLS),isothiocyanate(ITC) and oxazolidine thione(OZT) content in the muscle and liver also increased with the rapeseed meal level increasing in average body weight 5.0 g;In average body weight 18.7 g,there were no significant difference in serum glutamic-oxalacetic transaminase,glutamic-pyruvic transaminase,glutamic-oxalacetic transaminase/glutamic-pyruvic transaminase,total protein,albumin,globin,albumin/ globin,urea nitrogen,glucose,creatinine,T3 and T3/T4,but T4 and T3+T4 levels were significantly lower than those of control,liver cells were damaged.From the two trials,a percentage of no more than 30.0% of rapeseed meal supplementation in the feed was suitable.更多还原