A study the effect of supplementation vitamin C and dietary calcium on: I- Some productive performance in two different strains of broiler chicks under heat stress conditions

[摘要] This study was undertaken to evaluate the effect of adding vitamin C at (0,150 mg/kg feed) and dietary calcium at (0.9,1.1%) on some productive performance of two different strains of broiler (Ross and Hubbard).A total of one hundred ninety two birds(96 chicks for each strain) one day old unsexed were used in this study. Each strain distributed randomly to four groups (24) chicks for each treatment, two replicates of (12)chicks for each.First group was fed on basal diet supplemented with (0.0 vitamin C+0.9% calcium).Second group was fed on the same basal diet supplemented with (0.0 vitamin C +1.1% calcium).Third group was fed on basal diet supplemented with (150 mg vitamin C/kg feed+0.9% calcium) and fourth group was fed on basal diet supplemented with (150mg vitamin C/kg feed +1.1% calcium).The results of this study showed that growth performance of chicks was significantly improved in Co-supplemented vitamin C and calcium (1.1%) and there was no significant interaction between vitamin C supplementation and calcium on dressing percentage and mortality rate.

[学科分类] 土木及结构工程学