Influence of lighting periods and stocking densities on performance, carcass characteristics and some stress parameters in broilers
ARCHIV FUR GEFLUGELKUNDE, cilt.72, sa.5, ss.193-201, 2008 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 72 Sayı: 5
- Basım Tarihi: 2008
- Dergi Adı: ARCHIV FUR GEFLUGELKUNDE
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.193-201
- Anahtar Kelimeler: Broiler, lighting period, stocking density, stress, CHICKENS GALLUS-GALLUS, DEVELOPMENTAL STABILITY, TONIC IMMOBILITY, LAYING HENS, BEHAVIOR, WELFARE, YIELD
- Ankara Üniversitesi Adresli: Evet
Özet
This study was undertaken to investigate the effects of lighting and stocking density on performance, carcass characteristics and some stress parameters (H-L ratio, serum glucose, cholesterol and triglyceride levels, tonic immobility test (TI), antibody production, relative asymmetry (RA) and external appearances). Four hundred and seventy day-old male broiler chicks (Ross 308) were obtained from a commercial hatchery. The chicks were randomly distributed into two light proof controlled rooms. In one room the lighting period remained at continuous lighting (24 L: OD) during the whole experiment, while in the other room the photoperiod was 16 h light and 8 h dark per day. Each lighting group was divided into two stocking density groups (11.9 b/m(2) (average 29.9 kg of BW/m(2)) and 17.5 b/m(2) (average 40.7 kg of BW/m(2))) with 5 replications per group.