Pre- and postnatal conditioning induced thermotolerance on body weight, physiological responses and relative asymmetry of broilers originating from young and old breeder flocks


Yalcin S. , OZKAN S., CABUK M., BUYSE J., DECUYPERE E., SİEGEL P.

POULTRY SCIENCE, cilt.84, ss.967-976, 2005 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 84 Konu: 6
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1093/ps/84.6.967
  • Dergi Adı: POULTRY SCIENCE
  • Sayfa Sayıları: ss.967-976

Özet

The present experiment was conducted to examine the effects of pre- and postnatal conditioning to induce thermotolerance in broilers hatching from eggs orginating from younger and older breeder flocks. From each flock, 500 eggs were randomly divided into 2 groups and incubated at standard (SIT) and high (HIT) temperatures. At hatch, chicks were allotted to 36 floor pens. At 5 d of age 3 pens per parent age per incubation temperature were heat conditioned (C) for 24 h. At 21 d of age, 3 pens per parent age per incubation temperature were kept under standard (S) rearing temperatures, whereas the remaining broilers (including C) were moved to a heated room (H). Thus, there were 3 groups from 21 to 49 d including S, H, and C+H.