Response of different genotypes of broilers to lysine supplementation raised under practical condition

This study evaluated lysine supplementation of 4 to 42 day of age of two commercial broiler genotypes (arbor acres and lohmann). four hundred and fifty day-old chicks were sexed and randomly distributed into 60 bamboo pens each 2 m2. a starter commercial diet as a basal diet was supplemented with lysine mono-hcl in a 2x2x5 factorial arrangement with lysine levels of 0.0,0.5,1.0,1.5 and 2.0 g/kg fed from 4-21 days of age,and then followed by a finisher diet fed from 22-42 days of age. feed consumption,body weight gain and fcr were determined on weekly basis. on d 43 of experiment,4 birds per each replicate were processed for carcass parameters. results of the study revealed that lysine supplementation in a starter commercial diet increased significantly carcass weight (p<0.05. improved breast meat and lower abdominal fat were found in lysine supplementation. arbor acres broilers response more efficient in low lysine whilst lohmann broilers were better in a higher level of lysine. © 2012 diponegoro university. all rights reserved.