Utilization of probiotic bacteria Pediococcus acidilactici to enhance water quality, growth performance, body composition, hematological indices, biochemical parameters, histopathology and resistance of red tilapia (Oreochromis sp.) against Aeromonas sobria
Dalia A. Abuljadayel, Duaa A. Bukhari, Moaheda E. H. Eissa, Mohammad Bodrul Munir, Ahmed Jalal Khan Chowdhury, El‐Sayed Hemdan Eissa
Abstract
ABSTRACT Aquaculture uses probiotic bacteria as a microbiological supplement in place of antibiotics. The current study’s objective was to determine how well red tilapia (Oreochromis sp.) raising water responded to Pediococcus acidilactici as a probiotic bacterium. For the four groups (one control group, three test groups), a total of 120 fingerlings (13.00 ± 0.10 g) were used. P. acidilactici was treated in growth water in three test groups at various concentrations. In terms of ultimate body weight, weight increase, and specific growth rate, fish raised in water supplemented at a high level with P. acidi lactici performed noticeably better during growth compared to the control. When fish rearing water included lower levels of P. acidilactici than the control group, feed conversion ratios were considerably improved. In comparison to the untreated group, the range and median levels of unionized ammonia in water were likewise significantly reduced by probiotic water additives. When compared to the control group, the treated tilapia water with a high concentration of P. acidilactici had higher amounts of crude protein and ash as well as lower levels of fat. The heights of the intestinal villi increased as the water’s probiotic content rose. Finally, red tilapia fish were experimentally challenged with pathogenic Aeromonas sobria, and mortalities were daily recorded for 15 d following infection, indicating the effect of probiotics feeding to enhance resistance to A. sobria.