Influence of mannan-oligosaccharide and Saccharomyces cerevisiae on performance, carcass yield and biochemical profile of broiler chickens

Day old Vencobb broiler chicks (150) were randomly allocated to 5 treatment groups with 3 replicates of 10 chicks in each to study the effect of mannan oligosaccharide (MOS) and Saccharomyces cerevisiae (SC) on growth performance, nutrient utilization and carcass yield. The trial lasted for 5 weeks. The starter (0-14 day), grower (14-28 days), and finisher (28-35 days) diets contained 23, 21.5 and 20% CP and 2,900, 3,000 and 3,100 kcal ME/kg feed, respectively. The control (C) group in starter, grower and finisher was supplemented with premix while their negative control (NC), mannan oligosaccharides (MOS), Saccharomyces cerevisiae (SC) and mannan oligosaccharides+ Saccharomyces cerevisiae (MOS+SC) groups were not supplemented with premix. The later 3 groups were supplemented with MOS 500g/tonne, SC 500g/tonne and MOS+SC 500g+500g/tonne feed, respectively. Maximum conversion of feed into gain was recorded in MOS followed by SC and MOS+SC. The chicks attained relatively more body weight in MOS+SC than other groups. It was least in group C. Phosphorus retention was maximum and significant in MOS+SC in spite of their minimum intakes. There was significant improvement in weight of different cuts in MOS+SC group as compared to other groups. Maximum serum cholesterol, LDL cholesterol and triglyceride was recorded in NC group while in the MOS supplemented treatment serum HDL cholesterol and total protein was maximum. The mean serum glucose, Ca and P was recorded highest in MOS+ SC group. It may be concluded that MOS+SC supplementation in the diet improves the overall FCR and blood biochemical profile of broiler chickens.