EFFECT OF NON-ANTIBIOTIC GROWTH PROMOTER IN BROILER PRODUCTION

Abstract

This study was conducted to evaluate the effect of non-antibiotic growth promoters in broiler performance. Day-old of “Indian River-Lohmann Meat” broiler chicks (n=150) were randomly allocated into five treatments. Each dietary treatment consisted of 3 replicates having 10 broilers in each of the replication. The dietary treatment without growth promoter considered as control (T 0 ) and the other four treatments were T 1 (100g multi secondary plant compounds & essential oils/ton feed), T 2 (500g lysozyme enzyme/ton feed), T 3 (500g single secondary plant compound & essential oil/ton feed) and T 4 (500g antibiotic/ton feed). During the experimental periods of 4 weeks, feed intake, body weight gain, feed conversion ratio (FCR), flock uniformity values were calculated. Growth performance parameters were significantly (P<0.05) affected by experimental diets. Birds fed 100g multi secondary plant compounds & essential oils/ton feed (T 1 ) gained superior body weights (1710.33±15.30g) compared to T 0 - control (1584.67±12.91g), T 4 - antibiotic (1593.33±14.53g) and other dietary treatments. The mean body weight gains (g) at the 1 xi

st , 3 rd and 4 th week of different treatment groups were significantly higher (P<0.05) than the control group. The groups fed diets containing 500g single secondary plant compound & essential oil/ton feed (T 3 ) and 100g multi secondary plant compounds & essential oils/ton feed (T 1 ) had lower (best) FCR (1.35±0.00) & (1.36±0.00) respectively compared to T 0 control (1.43±0.00) and T 4 antibiotic (1.40±0.01). The inclusion of different dietary treatments had a significant (P<0.05) difference in flock uniformity. However, the control (T 0 ) group had the superior uniformity (73.33±3.66%) and the group treated with antibiotic had the lowest uniformity (56.67±3.33%). It is concluded that non-antibiotic growth promoter can be included in the broiler diet instead of antibiotic growth promoter for better performance.