Effect of prenatal temperature conditioning of laying hen embryos: Hatching, live performance and response to heat and cold stress during laying period

Kamanlı S., Durmus I., YALÇIN S. , Yıldırım U., Meral O.

JOURNAL OF THERMAL BIOLOGY, cilt.51, ss.96-104, 2015 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 51
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.jtherbio.2015.04.001
  • Dergi Adı: JOURNAL OF THERMAL BIOLOGY
  • Sayfa Sayıları: ss.96-104

Özet

This study was designed to determine the effect of prenatal temperature conditioning on hatching and live performance of laying chickens, and response to heat and cold stress during laying period. A total of 3600 eggs obtained from ATAK-S brown parent stock were incubated at control (37.5 degrees C, CONT-Inc), cyclic low (36.5 degrees C/6 h/d from 10 to 18 d of incubation, LOW-Inc) or high (38.5 degrees C/6 h/d from 10-18 d of incubation, HIGH-Inc) incubation temperatures. Hatched chicks per incubation temperature were reared under standard rearing conditions up to 26 wk. From 27 to 30 wk, hens from each incubation temperature were divided into 3 environmentally controlled rooms and reared at control (20 +/- 2 degrees C, CONT-Room), low (12 +/- 2 degrees C, COLDS) or high (32 +/- 2 degrees C, HEATS) temperatures. Hatching performance, body weight, egg production, and plasma triiodothyronine (T-3) and thyroxine (T-4) levels and oxidant and antioxidant activities were evaluated.