تأثير إضافة مستويات مختلفة من الكارنتين L-Carnitine إلى العليقة في بعض الصفات الإنتاجية لطائر السمان الياباني المعرض للإجهاد الحراري

الملخص EN

This study was conducted at the Poultry farm / Department of Animal Resources , College of Agriculture / Al-Qasim Green University .

The field work of this study was performed during the period from 17/10/2014 until 27/11/2014 .

The project of this study was aimed to identify the role of utilization of Carnitine in reduction of heat stress on quail birds exposed to (28 - 36 - 28) C˚ periodic temperature .

Three hundred of Japanese quail nestlings were used and educated in cages 1×1 m .

The nestlings were randomly divided into 5 treatments and by 3 replicates per treatment and each treatment was included 20 nestlings , The Carnitine was used in concentrations (0 , 100 , 200 , 300 , 400) mg / kg feed for treatments (T1 , T2 , T3 , T4 , T5) respectively from age 8-42 days .

The most important results of this study could be summarized by the following :Significant superiority (P<0.01) in the alive body weight during the sixth week together with the total weight gained for the weeks (2-6) for the carnitine treated birds compared with T1 control treatment birds , T5 treatment gave the best results .

Significant superiority (P<0.01) for T5 treatment birds on the other treatments in the total average consumption of feed for the weeks (2-6) .Significant improvement (P<0.01) for carnitine treatment birds compared with T1 control treatment birds in the total food conversion efficiency for the weeks (2-6) and there were no mortality during the experiment .