جستجوی مقالات مرتبط با کلیدواژه "بیوشیمیایی همولنف" در نشریات گروه "شیلات"

The aim of this study was to investigate the effects of dietary ethanol extract of Rhizophora mucronata leaves on the growth performance, survival, and biochemical composition of Litopenaeus vannamei. The experiment was conducted using 600 shrimp juveniles (2 g) in a completely randomized design with four treatments and three replicates, with 50 shrimp per replicate for a duration of 60 days. The experimental treatments included: 1- Basal diet (control), 2- Basal diet + 1 mg ethanol extract of mangrove leaves, 3- Basal diet + 2.5 mg ethanol extract of mangrove leaves, and 4- Basal diet + 5 mg ethanol extract of mangrove leaves. At the end of the experimental period, various growth, biochemical, and survival parameters were measured. The results showed that body weight gain, daily growth rate, and specific growth rate were significantly higher in the 1, 2.5, and 5 mg/kg ethanol extract of mangrove leaves compared to the control group (P<0.05). The highest carapace length was mesured in 2.5 mg/kg compared to the other experimental groups (P<0.05). Besides, the survival rate was significantly increased in all extract treatments compared to the control group (P<0.05). The highest crude protein content of the carcass and the lowest moisture content were observed in 2.5 mg/kg (P<0.05). The control group showed the lowest lysozyme activity, while the 5 mg treatment exhibited the highest lysozyme activity, followed by the 1 mg and 2.5 mg treatments (P<0.05). The 1 mg treatment showed the highest phenoloxidase activity (P<0.05). Based on the results, the 2.5 mg and 5 mg treatments were associated with the highest protein and albumin contents, while the control and 1 mg treatments had the lowest contents (P<0.05). Overall, it can be concluded that the inclusion of 2.5 mg/kg of mangrove leaf extract in the diet had positive effects on the growth, biochemical composition, and survival of whiteleg shrimp.