علوم زیستی دریا
Vahid Morshedi; Naser Agh; Jasem Marammazi; Farzane Noori; Takavar Mohamadian
Abstract
The aim of this study was to evaluate the single and combined effects of dietary probiotic with prebiotic on growth performance, non-specific immune response, body composition, digestive enzymes activity and intestine bacterial flora of sobaity fingerling (Sparidentex hasta). For this purpose, 425 individuals ...
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The aim of this study was to evaluate the single and combined effects of dietary probiotic with prebiotic on growth performance, non-specific immune response, body composition, digestive enzymes activity and intestine bacterial flora of sobaity fingerling (Sparidentex hasta). For this purpose, 425 individuals of sobaity fingerlings were prepared with an average weight of 7.64 ± 0.3 g from the Mariculture Research Station of South Iranian Aquaculture Research Center. This study was carried out in a completely randomized design with four treatments and three replications (45 fish per each replication) in fiberglass tanks with 300 liters volume. Fish were fed with feed containing 0 (control group), 106 CFU probiotic per gram feed (treatment 1), 0.5 and 1 percent prebiotic plus106 CFU probiotic per gram feed (treatment 2 and 3) at 4.5 percent of body weight for a period of 42 days. At the end of the experiment, body composition, intestine, blood, plasma and mucus samples were collected. The obtained results indicated that dietary prebiotic and probiotic did not change growth performance, intestine bacterial flora and non-specific immune response of sobaity (P > 0.05). Nonetheless, plasma bactericidal activity of control group was significantly higher that treatment 3 (P < 0.05). Moisture and protein content of treatment 2 showed significant different compared to the control group (P < 0.05). The results of this study showed that digestive enzymes activity including alkaline protease, amylse and lipase affected by administration of dietary prebiotic and probiotic (P < 0.05).
علوم زیستی دریا
Jasem Ghafleh Marammazi; Mojtaba Zabayeh Najafabadi; Esmaeil Pagheh; M Hafezieh
Abstract
This study has been carried out to evaluate the effect of varying dietary levels of protein (45%, 50%, 55% and 60%) and energy (20, 22 and 24 kjg-1) on growth, survival rate, food performance and body chemical composition of sobaity Juvenile. 36 polyethylene of 300 Lit volume container equipped with ...
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This study has been carried out to evaluate the effect of varying dietary levels of protein (45%, 50%, 55% and 60%) and energy (20, 22 and 24 kjg-1) on growth, survival rate, food performance and body chemical composition of sobaity Juvenile. 36 polyethylene of 300 Lit volume container equipped with flow-through water system (with 1 Lit/min water exchange) have been provided and each stocked with 18 Juvenile fishes (27.99 ± 0.14 g weight). During the rearing period biometric measurement was carried out once fortnightly. After 56 days of rearing period, results showed significant affect of treatments and varying levels of protein and energy on the growth and food performance, survival rate and body composition )P ≤ 0.05) of the fish, but the effect of dietary protein was not significant on the FCR, PER, fat and body crude fiber (P > 0.05). Also the effect of dietary energy was not significantly effective (P> 0.05 ) on the growth and food performances, but was significantly effective on the survival rate and body composition )P ≤ 0.05) of the fish. Results also showed the highest growth of fish in diet with 60% CP and 24 kJg-1 energy, highest survival rate in diet with 55% CP and 22kJg-1 energy and best FCR and PER in diet with 50% CP and 24 kJg-1 energy. According to the results of the present, 50% CP and 22 kJg-1 energy are recommendable to cover the dietary protein and energy requirement of sobaity fish in the Juvenile stage.