The use of Kopal broiler chicken supplement in Yazd Arian Parvar: under the supervision of Dr. Ranjber.
Performance specifications:
-Bird under study: broiler chicken
-Place of performance: Yazd, Arian Peror broiler farm
-Length of breeding period: 50 days
-Number of examined chickens: 20,000 pieces (20,000 control pieces)
-Percentage of supplement use: 0.5 percent
Summary of results: benefit-cost ratio 8.5
Loss rate: 4% less loss; 600 more chickens
Weight gain: 90 grams more weight gain
Improving productivity indicators: