Effects of dietary Lactobacillus fermentum and Saccharomyces cerevisiae on the growth performance, hematological parameters, organ-somatic indices, and protection of Heterobranchus bidorsalis juveniles against Aeromonas hydrophila infection
2022
Akanmu, Olumuyiwa Ayodeji | Omitoyin, Bamidele Oluwarotimi | Emmanuel Kolawole, Ajani | Emikpe, Benjamin Obukowho
The use of probiotic diets in protecting Heterobranchus bidorsalis against pathogenic organisms is important in order to maximize yield, hence a 12 week feeding trial was conducted with diets containing Lactobacillus fermentum (Lf), Saccharomyces cerevisiae (Sc), and their combination (LfSc) to determine the diets that maximized fish growth hence, Lf¹, Sc², and LfSc³ were obtained. The health protective effect of these diets was further examined by challenging randomly selected thirty fish (145.29 ± 3.72 g) per treatment, with Aeromonas hydrophila solution for an hour, and placed in the experimental diets in three replicates for thirty days. The pre- and post-challenge data showed highest mortality (30%) in the control experiment over the fortified diets. Highest packed cell volume (58.00 ± 1.84%) was recorded in Sc² at post-challenge. All the examined organs of fish fed control diet had the highest microbial load. Conclusively, diet Sc² should be embraced for the production of fast growing and disease resistant H. bidorsalis.
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