Influence of season on nutrient intake and performance of commercial broilers in arid regions of Karnataka
T. THIRUMALESH AND S. MALLIKARJUNAPPA
Dept. of Animal Nutrition, Veterinary College , Bidar
Three batches of 150 broilers each were reared on deep litter under different seasons in arid regions of Karnataka namely, summer – S1 (April - May), rainy – S2 (August – September) and winter – S3 (January – February) by providing uniform commercial feed comprising 20.3% CP and 2700 Kcal ME/Kg in broiler starter and 17.4% CP and 2800 Kcal ME/Kg in broiler finisher diet in all the seasons to avoid feed variations. The data related to the nutrient intake and performance of birds were recorded and analyzed statistically. The average feed intake, water intake, weight gain, FCR, mortality rate and dressing percentage in S1, S2 and S3 groups were 110.3, 133.6 and 110.7 g/b/d; 300.5, 201.2 and 324.5 ml/b/d; 44.0, 46.8 and 48.9 g/b/d; 2.0, 2.0 and 1.9; 0.3, 0.7 and 0.5 % and 71.4, 72.5 and 70.8 %, respectively. The average CP and ME intake in S1, S2 and S3 seasons were 19.8, 23.9 and 20.0 g/b/d; 306.6, 372.0 and 307.6 k cal/b/d, respectively but there was no significant difference between the seasons in CP and ME intake. Similarly no significant difference was observed in DMI, OMI, CFI, NFEI, EEI and TAI both in broiler starter and finisher birds. Further, there was no significant difference observed between the seasons with respect to the performance of birds where as a significant difference was observed between seasons in temperature (P≤ 0.1) and humidity (P≤ 0.1) which did not influence the performance of birds. This suggested that the proper application of management practices under different seasons would not hinder the nutrient intake and performance of the birds in this region.