摘要
以初始体重(2.00±0.08)g的青鱼幼鱼为研究对象,用小肽豆粕分别替代饲料中0(D1)、25%(D2)、50%(D3)、75%(D4)及100%(D5)的鱼粉,配制成5种等氮、等能的饲料,在室内养殖系统中进行为期8周的生长试验,探讨饲料中小肽豆粕与鱼粉的不同比例对青鱼幼鱼生长及其体组成的影响。结果表明:D2组的增重率(WGR)、特定生长率(SGR)、饲料系数((FCR)、肝体比(HIS)及肥满度(CF)与对照组差异均不显著(P>0.05);D3-D5组的WGR、SGR、HIS及CF显著低于对照组(P<0.05),FCR则显著高于对照组(P<0.05),蛋白质效率(PER)随着替代比例的增加显著降低(P<0.05),成活率(SR)、肠体指数(the intestine weight index)及肠长指数(the intestine length index)无显著变化(P>0.05)。D2组全鱼水分及粗蛋白含量与对照组差异不显著(P>0.05),D3-D5组全鱼水分含量显著高于对照组(P<0.05),粗蛋白含量则显著低于对照组(P<0.05),粗脂肪及灰分含量在各组间无显著差异(P>0.05)。各试验组肌肉的水分、粗蛋白、粗脂肪及灰分含量与饲料中小肽豆粕的替代比例无显著相关性(P>0.05)。在本试验条件下,饲料中小肽豆粕替代鱼粉的比例为25%时,对青鱼幼鱼的生长不产生显著影响。
A 8-weeks feeding trial was conducted to evaluate the potential effects of replacement of fish meal by fermented soybean meal on the growth and body composition of juvenile black carp with initial weightof 2.00 ±0.08 g. Five isonitrogenous and isoenergetic diets were formulated to contain different levels of fermented soybean meal to replace fish meal 0(D1), 25%(D2), 50%(D3), 75%(D4) and 100%(D5). The results indicated that the weight gain ratio(WGR), the specific growth ratio(SGR), the feed conversion ratio(FCR), the hepatopancreas somatic index(HIS) and the condition factor(CF) in fish fed D2 were not significantly different from the control group, respectively. The WGR, SGR, HIS and CF in fish fed D3-D5 were significantly lower the control group, while FCR was significantly higher than control group. Protein efficiency ratio(PER) significantly decreased with the increasing of the substitution percentage of fermented soybean meal, but the substitution had no significant effect on survival rate(SR), the intestine weight index and the intestine length index. The whole body moisture and crude protein content in fish fed D2 were not significantly different from the control group. The whole body moisture content was significantly higher than the control group and crude protein content was significantly lower than the control group in fish fed D3-D5, but the body fat and ash content of the fish were not significantly different among all the dietary treatments. There were no significant differences in moisture, crude protein, fat and ash content of the muscle among dietary treatments. Under the condition of this experiment, 25% fish meal can be replaced by fermented soybean meal without any adverse effect on growth performance for juvenile black carp.
出处
《浙江海洋学院学报(自然科学版)》
CAS
2014年第1期72-78,共7页
Journal of Zhejiang Ocean University(Natural Science Edition)
基金
国家现代农业产业技术体系建设专项(CARS-46-21)
浙江省重大科技专项重点农业项目(2012C12008-2)
关键词
青鱼
鱼粉
小肽豆粕
生长性能
体组成
Mylopharyngodon piceus
fish meal
fermented soybean meal
growth performance
body composition