APPRAISAL OF BACILLUS SUBTILIS AND SACCHAROMYCES CEREVISIAE SUPPLEMENTATION TO LAYER JAPANESE QUAIL DIET ON PRODUCTIVITY, BIOCHEMICAL PARAMETERS, AND DIGESTIVE ENZYMES

Abstract

The current work aimed to study the impacts of supplementation of Bacillus subtilis (BS) and Saccharomyces cerevisiae (SC) on egg production of Japanese quail, blood biochemical parameters, and the specific activity of some digestive enzymes (trypsin, chymotrypsin, and amylase). A total of 150 female Japanese quail were randomly divided into three groups. First group (control group) had the basal diet contained the recommended requirements; where the 2nd group fed on the basal diet enriched with BS (1×108 CFU/kg feed); and the third group, the basal diet enriched with SC (3×108 CFU/kg feed). The group supplemented with BS showed a significant improvement in egg production compared to the other groups (P ≤0.05). There was a significant decreased in serum cholesterol, LDL, and increased in HDL in the BS and SC supplemented groups. In the BS and SC-enriched groups, the serum levels of urea and creatinine were significantly decreased in supplemented groups (P ≤0.05) than the control group. Serum total protein, albumin, and globulin levels were not affected. Levels of liver function markers (AST and ALT) were decreased (P ≤ 0.05) in the second group. BS improved the activity of digestive enzymes, particularly α-amylase. In conclusion, adding BS and SC to the layer quail diets has a potential effect on egg production, digestion, and general health.