نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه تکثیر و پرورش آبزیان، دانشکده علوم دریایی، دانشگاه تربیت مدرس، نور، مازندران
2 گروه بهداشت و کنترل مواد غذایی، دانشکده دامپزشکی، دانشگاه تهران، تهران، تهران
3 گروه شیلات، دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، گلستان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The present study was conducted to evaluate the effect of probiotic bacteria Pediocucus acidilactici encapsulated with alginate and resistant starch (Hi maize) coated by chitosan, on growth indices, intestinal flora and carcass composition of rainbow trout (Oncorhynchus mykiss). Rainbow trout fingerling with an average weight of 18.41 ± 0.32 g were fed with diets including: encapsulated probiotic, free probiotic, diet containing capsules free of bacteria (positive control) and control diet containing no probiotics for 60 days. The results exhibited that there were no significant differences in growth rate, weight gain, specific growth rate and feed conversion ratio in different groups. The highest number of lactic acid bacteria was found in the fish received the encapsulated bacteria while the lowest was in the control group (p<0.05). Maximum carcass protein and fat contents were observed in encapsulated bacteria treatment and maximum carcass ash was in control group (p<0.05). Totally, the results suggest that encapsulated P. acidilactici improves the growth performance, body composition and bacterial flora of rainbow trout.
کلیدواژهها [English]