EFFECTS OF INCLUSION OF PROBIOTIC PEDIOCOCCUS ACIDILACTICI IN DIETS WITH HIGH LEVELS OF SOYBEAN MEAL IN GROWTH AND INTERLEUKINS GENE EXPRESSION OF RAINBOW TROUT (Oncorhynchus mykiss)

• DOI: 10.37572/EdArt_3107255981

• Palavras-chave: Fingerlings, Plant-origin protein, Survival, Rainbow trout

• Keywords: Fingerlings, Plant-origin protein, Survival, Rainbow trout

• Abstract:

  A 90-days feeding trial was performed to establish the effects of the probiotic Pediococcus acidilactici added to diets with high contents of soybean meal in the growth performance, survival rate, proximate composition, and gene expression of the interleukins 1b, 4, 8, 10, and 21 of rainbow trout fingerlings. A basal diet (400 g/kg diet of soybean meal) was added with P. acidilactici at 0.2, 2, and 20 g/kg and fed to triplicate groups with initial weight of 2.3 ± 0.1 g (mean ± SE). Growth performance and survival improved with increasing inclusions of the probiotic, while gene expression of the interleukins il-4 and il-10 were upregulated as the probiotic increased in the diets. Concentration of P. acidilactici adequate for using with high levels of soybean meal inclusions was of 20 g/kg, as it helps to improve the growth, survival and upregulate the expression of the interleukins IL-4 and IL-10.