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

YALÇIN Z. S., ÖZKAN S., Cabuk M., Buyse J., Decuypere E., Siegel P.

POULTRY SCIENCE, vol.84, no.6, pp.967-976, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 84 Issue: 6
  • Publication Date: 2005
  • Doi Number: 10.1093/ps/84.6.967
  • Journal Name: POULTRY SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.967-976
  • Keywords: pre and postnatal heat conditioning, heat stress, broiler performance, blood parameter, relative asymmetry, GALLUS-GALLUS-DOMESTICUS, HEAT-STRESS, DEVELOPMENTAL STABILITY, EMBRYONIC-DEVELOPMENT, CHICKENS, TEMPERATURE, EXPOSURE, THERMOREGULATION, STOCKS, INCUBATION
  • Dokuz Eylül University Affiliated: No


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.