Inroduction & Objective: Growth and immunity resistance of fish are the most important factors in aquaculture. therefore, many types of research in probiotics, prebiotics, and synbiotics for improving growth and immunity in fish have been studied in the last years. More
Inroduction & Objective: Growth and immunity resistance of fish are the most important factors in aquaculture. therefore, many types of research in probiotics, prebiotics, and synbiotics for improving growth and immunity in fish have been studied in the last years.
Materials and Methods: In this study, effects of Lactobacillus plantarum and MOSon growth performance, digestive enzymes activity and intestine morphology of Oncorhynchus mykiss were studied. Juvenile rainbow trout (n=270) in 6 administration groups in 18 tanks were kept and fed with diets containing different doses (0.3 and 0.5 g kg-1 feed) of the probiotic, (2 g kg-1 feed) of prebiotic, (0.3+2 and 0.5+ 2g kg-1 feed of probiotic and prebiotic respectively) and a control group for 45 days.
Results: Results showed a positive effect on growth performance and digestive enzymes activity in probiotic (0.3 and 0.5 g kg-1 feed of probiotic) and synbiotic groups compared to the control group(p<0.05).
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A complete randomized experiment was conducted to study the effect of different levels of mannanoligosaccharides (0, 1, 2 and 3 g/kg into the basal diets) on growth performance, carcass characteristic and blood lipid profile in broiler chicks. Six hundred one day old Ro More
A complete randomized experiment was conducted to study the effect of different levels of mannanoligosaccharides (0, 1, 2 and 3 g/kg into the basal diets) on growth performance, carcass characteristic and blood lipid profile in broiler chicks. Six hundred one day old Ross 308 broiler chicks were randomly assigned into 5 treatments. Each treatment consisted of 6 replicates and there were 20 chicks in each replicate. In this experiment, avilamicin antibiotic (10 mg/kg into the basal diet) was used as a positive control. The obtained in results starter period showed that, none of the growth performance parameters affected by adding prebiotic. Adding avilamicin also did not affect the parameters under study. By adding 2 and 3 g/kg prebiotic or avilamicin into basal diet weight gain improved as compared with control diet (P<0.05) and feed conversion ratio was significantly lower in diet supplemented by 3 g/kg prebiotic or avilamicin in comparison with control diet (P<0.05). In finisher period, supplementing 2 and 3 g/kg prebiotic or avilamicin to the diet at the final growth period improved feed conversion ratio and weight gain significantly (P<0.05) as compared with the control diet. Addition 2 and 3 g/kg prebiotic to the diet decreased abdominal fat pad (as a percentage of live weight) significantly as compared with control diet, but its difference with diet supplemented by avilamicin was not significant. Only, in diet supplemented by 3 g/kg prebiotic the level of serum cholesterol was lower as compared with control diet (P<0.05). It seems that the best levels of mannanoligosaccharides were 2 and 3 g/kg of broiler diets.
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Abstract[1]
This research was conducted in order to investigate the effect of different levels of prebiotic safmannan in the diet on the growth performance of Koi carp. In this research, 120 pieces of baby fish with an average initial weight of 200 grams were divided i More
Abstract[1]
This research was conducted in order to investigate the effect of different levels of prebiotic safmannan in the diet on the growth performance of Koi carp. In this research, 120 pieces of baby fish with an average initial weight of 200 grams were divided into 4 groups for 8 weeks and each group had 3 repetitions. (0.01% of prebiotic safmannan per kg of food), treatment 3 (0.15% of prebiotic safmannan per kg of food). Breeding conditions were monitored daily in all 12 pools. The results of this study showed that adding different levels of prebiotic saf mannan to koi fish diet has a significant effect on growth factors (p<0.05). At the end of the experiment, the fish fed in treatment 2 had higher weight, more weight gain and lower food conversion ratio than the control treatment and other treatments (p < 0.05). Also, the use of prebiotic Safmannan in 3 treatments led to increased survival in They were not compared to the control group. In the composition of the carcass, prebiotic safmannan did not cause any change in the amount of protein and fat of the carcasses and only caused an increase in carcass ash and a decrease in the moisture content of koi fish carcasses.
* Corresponding Authors;hossein.varshoie@gmail.com
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در این آزمایش ارزیابی اثرات جیره­های مکمل شده با کروم مخمر یا مانان­ الیگوساکاریدها روی عملکرد تولیدی، صفات لاشه و سیستم ایمنی گزارش شده­ است. جیره­ها مورد استفاده عبارت بودند از: 1) جیره پایه (شاهد)، 2) جیره پایه مکمل شده با 600 میلی­گرم کروم مخمر د More
در این آزمایش ارزیابی اثرات جیره­های مکمل شده با کروم مخمر یا مانان­ الیگوساکاریدها روی عملکرد تولیدی، صفات لاشه و سیستم ایمنی گزارش شده­ است. جیره­ها مورد استفاده عبارت بودند از: 1) جیره پایه (شاهد)، 2) جیره پایه مکمل شده با 600 میلی­گرم کروم مخمر در هر کیلوگرم، 3) جیره پایه مکمل شده با 1200 میلیگرم کروم مخمر در هر کیلوگرم، 4) جیره پایه مکمل شده با 1 گرم مانان ­الیگوساکارید در هر کیلوگرم، 5) جیره پایه مکمل شده با 600 میلی­گرم کروم مخمر و 1 گرم مانان ­الیگوساکارید در هر کیلوگرم و 6) جیره پایه مکمل شده با 1200 میلی­گرم کروم مخمر و 1 گرم مانان ­الیگوساکارید در هر کیلوگرم. جوجه بلدرچین­های تغیه شده با جیره­های 2، 4 و 5 وزن نهایی و افزایش وزن مشابهی داشتند ولی هر دو در مقایسه با گروه شاهد وزن بالاتری داشتند. ضریب تبدیل خوراک تمایل نشان داد تا با مکمل جیره­ای بهبود پیدا نمود. صفات لاشه در میان تیمارها تفاوت نداشت. پاسخ­های اولیه و ثانویه ایمنی هومورال بلدرچین­های تغذیه شده با جیره­های حاوی مکمل در مقایسه با شاهد بالاتر بود. مجموع پروتئین پلاسما و تری­آیدوتیروزین توسط مکمل­های جیره­ای افزایش در حالیکه مجموع لیپیدها و کلسترول کاهش یافت. در نتیجه، مکمل جیره­ای حاوی کروم مخمر (600 میلیگرم در هر کیلوگرم) و مانان ­الیگوساکارید (1 گرم) عملکرد تولیدی و ایمنیت را بهبود و محتوای کلسترول را در بلدرچین­های ژاپنی کاهش داد.
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