Validation of the effect of some nutritional manipulations on the productive performance of broiler chickens

الملخص EN

The objectives of the experiment were to investigate the effects of different nutritional manipulations on the performance and carcass traits of broiler chickens.

Seven treatments were used: control, super pre-starter diet (25% P) during the first three days of age, mix.

of 2g of both yeast and glucose anhydrous, 2g synbiotic/Kg feed, 20g/500 ml water of synbiotic spraying, mix.

of 2g synbiotic/Kg feed+20g/500 ml water of synbiotic spraying and mix.

of super pre-starter diet (25% P) and 2g synbiotic/Kg feed.

Two hundred eighty, one day old of broiler chicks were randomly selected in experiment lasted in 6 weeks of age.

Body weight, feed consumption, body weight gain, feed conversion ratio and some carcass traits were studied.

The results indicated that there was significant (P<0.05) increase in body weight due to super pre-starter supplementation at 4, 5 and 6 weeks of age.

Body weight gain, feed consumption and feed conversion ratio were significantly (P<0.05) improved during the periods from (3-6) and (0-6) weeks of age.

Dressed carcass percentage was increased significantly (P<0.05) in chicks fed mix.

of synbiotic in feed and spray compared to the other treatments, the increased was 79.77% compared to control (75.14% ).

Breast% was increased in chicks fed mix.

of yeast and glucose anhydrous and also in chicks fed symbiotic in feed.

Results concluded that using of super pre-starter diet during the first 3 days of age at level of (25% P) improved growth performance of broiler chicks