Comparison of Lighting Programs Widely Used in Broiler Production With Respect To Performance and Some Carcass Properties

Authors : Uğur İLHAN, Ramazan YETİŞİR

Pages : 63-72

View : 29 | Download : 32

Publication Date : 2009-04-25

Article Type : Research Paper

Abstract :In this research, the effects of 4 different lighting programs insert ignore into journalissuearticles values(LP); which are widely used in the broiler production on performance and some carcass parts weights and ratios have been studied. LP are applied as first insert ignore into journalissuearticles values(1-2 day: 20 lux, 23 h; 3-42 day, 5 lux, 23 h);, second insert ignore into journalissuearticles values(1-3 day: 20 lux, 23 h; 4- 10 day: 5 lux, 8 h; 11-15 day: 5 lux 12 h; 16-21 day: 5 lux 8 h; 22-35 day: 5 lux, 18 h; 36-42 day: 5 lux, 23 h );, 3th insert ignore into journalissuearticles values( 1-3 day: 20 lux, 23 h; 4-42 day: 5 lux, 16 h ); and 4th insert ignore into journalissuearticles values(1-3 day 20 lux, 23 h; 4-10 day: 20 lux, 18 h; 11-15 day: 5 lux, 8 h; 16-21 day: 5 lux, 12 h; 22-28 day: 5 lux, 16 h; 29-42 day: 5 lux, 18 h ); programs. In the experiment, as each of 4 LP in one compartment, four replicate of each sex and each replicate having 30 birds, totally 960 chick insert ignore into journalissuearticles values(Ross 308); were used. As to the results obtained; live weight insert ignore into journalissuearticles values(LW); at slaugh-tering age were not effected significantly by LP. For Live weight gain insert ignore into journalissuearticles values(LWG);, between 1-10th and 11-29th days, the differences between 4th LP group and the others were found significant insert ignore into journalissuearticles values(P<0.05);. However, these significant differences have not been consistent at slaughtering age. More over, similar results have been obtained for the cumulative feed consumption insert ignore into journalissuearticles values(CFC);, as well, and CFC of the 4th LP realized significant differences insert ignore into journalissuearticles values(P<0.01); from the others. The feed conversion ratio insert ignore into journalissuearticles values(FCR); considering the CFC at slaughtering age were not affected by LP. Livability was also not affected by the treatments. While LP have effected significantly on carcass weight insert ignore into journalissuearticles values(P<0.05);, abdominal fat weight insert ignore into journalissuearticles values(AFW); and ratio insert ignore into journalissuearticles values(AFR, %); insert ignore into journalissuearticles values(P<0.01);, wing weight and ratio insert ignore into journalissuearticles values(%); insert ignore into journalissuearticles values(P<0.05);, breast weight and ratio insert ignore into journalissuearticles values(%); properties, the other carcas traits have not been effected significantly. With the 2nd LP lower breast weight and ratio insert ignore into journalissuearticles values(%); have been deter-mined as to the other LP groups. Similar situation have been shown by thigh properties and with 2nd LP groups, lower insert ignore into journalissuearticles values(P<0.05); thigh weight were obtained, but % thigh were not significantly effected by LP. Sex effects on carcass weight insert ignore into journalissuearticles values(P<0.05);, AFW and AFR insert ignore into journalissuearticles values(P<0.01);, and thigh weight insert ignore into journalissuearticles values(P<0.05); properties were found significant, but the other carcass traits have not been effected significantly. Although, male cicks have higher FCR than females, the difference for FCR between sex was not significant. LW and LWG of males in early period insert ignore into journalissuearticles values(1-10; 11-29 days); were higher insert ignore into journalissuearticles values(P<0.05); than females, but at slaughtering age these differences lost their significance.
Keywords : Broyler, aydınlatma programları, cinsiyet, performans, karkas özellikleri