Sugarcane bagasse ameliorates zootechnical performances and expression of growth- immune-related, and antioxidant genes of Litopenaeus vannamei larvae in the biofloc technology

The role of sugarcane bagasse (SCB) as a cheap carbohydrate (CHO) source was evaluated in L. vannamei larvae on the zootechnical indices and the countenance of growth, immune and antioxident genes in the liver and muscle tissues. The experiment includes two treatments, the control which feeds a commercial diet and the SCB treatment. It continued for 45 days in outside ponds in ternary (each supplied with six hundred shrimp larvae). The results revealed that both growth and survival rates of SCB treatment were significantly improved (P < 0.05) when versus to the basal. The hepatic (H) and muscular (M) genes expression increased considerably in the SCB treatment (P ≤ 0.05) versus control. The SCB treatment was the highest in all mRNA transcripts of studied immune-related genes. The expression of antioxidant genes superoxide destmutase (SOD) and glutathione peroxidase (GPx) in both H and M were increased significantly in SCB treatment relative to the control. Generally, the results highlight the importance of inclusion SCB in a zero water exchange system without an artificial diet ameliorates both zootechnical and immunity in L. vannamei.