Influence of lighting periods and stocking densities on performance, carcass characteristics and some stress parameters in broilers

ONBAŞILAR E. E., Poyraz O., Erdem E., ÖZTÜRK H.

ARCHIV FUR GEFLUGELKUNDE, cilt.72, sa.5, ss.193-201, 2008 (SCI-Expanded) identifier identifier

  • 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.