- Selcuk Journal of Agriculture and Food Sciences
- Vol: 23 Issue: 47
- Comparison of Lighting Programs Widely Used in Broiler Production With Respect To Performance and So...
Comparison of Lighting Programs Widely Used in Broiler Production With Respect To Performance and Some Carcass Properties
Authors : Uğur Ilhan, Ramazan Yetişir
Pages : 63-72
View : 10 | Download : 23
Publication Date : 2009-04-25
Article Type : Research Article
Abstract :In this research, the effects of 4 different lighting programs (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 (1-2 day: 20 lux, 23 h; 3-42 day, 5 lux, 23 h), second (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 ( 1-3 day: 20 lux, 23 h; 4-42 day: 5 lux, 16 h ) and 4th (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 (Ross 308) were used. As to the results obtained; live weight (LW) at slaugh-tering age were not effected significantly by LP. For Live weight gain (LWG), between 1-10th and 11-29th days, the differences between 4th LP group and the others were found significant (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 (CFC), as well, and CFC of the 4th LP realized significant differences (P<0.01) from the others. The feed conversion ratio (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 (P<0.05), abdominal fat weight (AFW) and ratio (AFR, %) (P<0.01), wing weight and ratio (%) (P<0.05), breast weight and ratio (%) properties, the other carcas traits have not been effected significantly. With the 2nd LP lower breast weight and ratio (%) have been deter-mined as to the other LP groups. Similar situation have been shown by thigh properties and with 2nd LP groups, lower (P<0.05) thigh weight were obtained, but % thigh were not significantly effected by LP. Sex effects on carcass weight (P<0.05), AFW and AFR (P<0.01), and thigh weight (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 (1-10; 11-29 days) were higher (P<0.05) than females, but at slaughtering age these differences lost their significance.Keywords : Broyler, aydınlatma programları, cinsiyet, performans, karkas özellikleri