تأثير إضافة مستويات مختلفة من مسحوق أوراق نبات إكليل الجبل Rosemary إلى العليقة في بعض الصفات الإنتاجية لفروج اللحم سلالة .Ross

Abstract EN

The research was conducted to investigate the effect of different levels of rosemary powder supplementation on some productive traits of broiler chicken ross strain.

Three hundred unsexed broiler chicks of one-day old were equally divided into five groups, 2 replicates per group (30 chicks per replicate).

Chicks were fed on starter diet from one-day old until end of three week then replaced to finisher diet from the beginning of four week until the end of six week, starter and finisher diet supplemented with four ratio from rosemary powder 0, 0.5, 1, 1.5 and 2% which represented experimental groups.

Results showed a significant superiority (P≤0.05) in average live body weight, weight gain, feed conversion ratio and dressing percentage in birds supplemented with rosemary powder as compared with control group at 3 and 6 week of birds age.

Moreover supplementation of rosemary had significantly (P≤0.05) decreased mortality ratio in experimental groups as compared with control group.

It can be concluded that supplementation of rosemary powder to diet had a profound effect to enhance productive traits of broiler chicken ross strain.