The study was conducted at the University Fish Farm, take-off Campus of Federal University Dutsin-Ma, Katsina State, to evaluate the effect of yeast and garlic on growth performance and haematological parameters of Clarias gariepinus (Burchell-1822) Fingerlings. A total of one hundred and eighty (180) Clarias gariepinus fingerlings were sourced from the Department of Biology, Ahmadu Bello University, Zaria, Kaduna State, Nigeria. The fish were acclimatized for two weeks, weighed, and randomly divided into four treatment groups consisting of a control group (T4, 0g/kg yeast and garlic, T1 2g/kg yeast Sand garlic, T2 4g/kg yeast and garlic, and T3 6g/kg yeast and garlic), in a complete randomized design (CRD). The treatment was replicated three 3 times, with each replicate having fifteen (15) fingerlings. The experiment was conducted for twelve (12) weeks. The results revealed significant differences (P 0.05) differences across all the treatments in terms of RBC, although numerical variations were observed with an increase in RBC values as the inclusion rate increased. Neutrophil values recorded in this study show that inclusion of Saccharomyces cerevisiae and Allium sativum at 2g, 4g, and 6g inclusion rates influenced significant (P < 0.005) differences between T1 and T3, with T3 having the highest value obtained.
Idris et al. (Mon,) studied this question.