الاستجابة الانتاجية لدجاج فروج اللحم Ross 308 المعرض لأنظمة تقنين غذائية مختلفة مع و بدون إضافة مسحوقي الحلبة و اليانسون في العليقة

Abstract EN

This experiment was carried to investigated the influence of using 3 different feed restriction systems with or without adding the dietary anise and fenugreek on productive performance of broiler chickens during the early age (2 and 3 weeks).

it has been used 400 unsexed chicks (ross 308)-one day old which distributed randomly into 10 treatments (40 chicks / treatment(assigned into 2 replications (20 chicks/ replication).chicks were reared for 6 weeks and divided at 2 week old into the following treatments:1st treatment (g1) : ad libitum feeding (control), 2nd, 3rd and 4th treatments (g2, g3 and g4): quantitative feed restriction (30%), 5th, 6th and 7th treatments (g5, g6 and g7): time feed rectriction (12 hours/day), 8th , 9th and 10th treatments (g8, g9 and g10) : diet dilution with sand (15%).

1% of fenugreek powder was added to g3 , g6 and g9 diets and 1% of anise powder was added to g4, g7 and g10 diets.

the results revealed that all feed restriction treatments led to maintain accumulatively (1- 6 weeks) the body weight, weight gain and growth rate accompanied with lowering (p<0.05) feed intake and improve(p<0.05) feed conversion coefficient .

it was also found that each treatment has special role in its positive effect for these traits during the feed restriction and compensatory growth stages.

moreover, there was a significant increase (p<0.05) in dressing percentage with and without edible viscera expect g5 and high increase(p<0.05) in productive index in g3.

most of the improvement in these mentioned traits was achieved in feed restriction diets enriched with fenugreek and anise seed powders.