IN VITO HYDROLYSIS OF YEAST BIOMASS AND FFECT OF VARYING LEVELS OF HYDORLYZED YEAST ON THE PRODUCTION PERFORMANCE OF BROILERS

Abstract

The present research study was conducted to assess the effects of supplementation of hydrolyzed yeast (HY) in drinking water (DW) on the production performance, welfare indices, and development of immune organs in broilers. For this a total of 480 broiler chicks were allocated (randomly) into four treatment groups viz: group A was control provided 0ml/L HY in DW, group B was provided 0.2ml/L HY in DW , group C was provided 0.4ml/L HY in DW, and group D was provided 0.6ml/L HY in DW. The HY was supplemented in drinking water for 8 hours as per scheme, afterward the fresh water without HY was offered to groups. Each group was consisted of three replicates (40 birds each). The inclusion of HY in water had effect (p < 0.05) on FI (FI), body weight gain (BWG) feed conversion ratio (FCR), foot pad dermatitis score (FPDS) and development of immune organs (bursa; p < 0.01 and spleen; p < 0.05). Broilers receiving 0.4ml/L HY in DW for 8 hours showed the best growth efficiency and lowest FCR values. Bursa and spleen development was increased in with increasing HY levels (ml/L) in DW. The results of the trial demonstrated that supplementing HY in DW, especially @ 0.4–0.6ml/L levels improves the production performance, livability%, FPDS and health of immune organs without any adverse effects on birds welfare. Therefore it is recommended that HY at levels of up to 0.6ml/L of DW can be used as a natural functional additive to enhance performance, welfare and immunity in poultry