Influence of Virginiamycin on broiler performance fed two levels of energy
M.C. SHIVAKUMAR, B. UMAKANTHA* AND G. DEVEGOWDA*
Main Agricultural Research Station, Dairy Unit
University of Agricultural Sciences, Dharwad -580 005
*Dept. of Poultry Science, UAS, Hebbal, Bangalore - 560 024
An experiment was conducted to evaluate the influence of virginiamycin supplementation fed two levels of energy 2900 and 2800 ME K.Cal/kg during starter and 2950 and 2850 K.Cal/kg during finisher on the performance of broilers using 352 chicks for 42 days. Low energy with virginiamycin significantly (P<0.05) improved the body weight over its unsupplemented group. Feed efficiency was better in all the virginiamycin-supplemented groups. Mortality rate of 1.25% and 5% was recorded in unsupplemented group of normal energy and low energy groups, respectively. Litter moisture and litter score did not differ significantly (p<0.05) among the groups except in normal energy with virginiamycin compared to its control. Total bacterial count and total cocci count differed significantly in all the groups. Relative economics was calculated and net profit/bird over feed cost was better in all the supplemented groups.