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Effects of probiotic bacteria on survival, growth and body composition of rainbow trout (Oncorhynchus mykiss) larvae fed diets with various fish meal

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Journal of Coastal Life Medicine 2015年第2期 91-97页

作者： Hadi Jamali Horiye Moghadam Nafiseh Pariche hojatolah jafaryan Department of Fishery Urmia UniversityUrmiaIran Department of Fishery Isfahan University of ThechnologySciences and Natural ResourcesIsfahanIran Department of Fishery Gonbad Kavous UniversityGonbad KavousIran

Objective:To compare the the effects of the diets containing various fish viscera meal and effects of probiotic bacteria(Lactobacillus sp.,Bifidobacterium *** Streptococcus sp.)on the growth,survival and carcass composition of rainbow trout ***:Twelve tanks consisting of triplicates for each treatment group were *** groups of rainbow trout(176 mg bodyweight)were fed with three diets formulated with viscera meal(VM)derived from common carp(Cyprinus carpio),or VM derived from mullet(Liza saliens and Liza auratus)or commercial diet with in-tank probiotic respectively,and three diets without probiotic 4 times a day at 5%to 6%of body weight for 45 *** trout larvae(average individual weight,176 mg)were randomly distributed with density of 4 fish/L into 18 fiberglass *** probiotic treatments a blend of selected bacteria at 104 CFU/mL were added into rearing tanks four times a *** the end of the 45-day experiment,growth performance,survival rates and carcass composition of larvae were ***:The results indicated that change to probiotic diets significantly affect growth and survival of rainbow trout larvae(P<0.05).Rainbow trout larvae fed with commercial diet with in-tank probiotics showed the highest survival rates(98%),total weight(2226 mg)and specific growth rates(7.16%/d)among treatment ***:VM derived from common carp can successfully replace more than half of marine fish meal in formulated diets for rainbow *** of in-tank blends of Lactobacillus sp.,Bifidobacterium *** Streptococcus sp.,can increase survival rates and specific growth rates in rainbow trout larvae.

关键词： Rainbow trout Fish viscera meal Probiotic

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