Initial body condition score at the fattening affects on the behavioural and physiological responses of Holstein Friesian steers under heat stress

TAPKI İ.

Asian Journal of Animal and Veterinary Advances, cilt.7, sa.8, ss.674-683, 2012 (Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 7 Sayı: 8
  • Basım Tarihi: 2012
  • Doi Numarası: 10.3923/ajava.2012.674.683
  • Dergi Adı: Asian Journal of Animal and Veterinary Advances
  • Derginin Tarandığı İndeksler: Scopus
  • Sayfa Sayıları: ss.674-683
  • Anahtar Kelimeler: Behaviour, Body condition score, Dairy steer, Fattening, Heat stress, Physiological responses
  • Hatay Mustafa Kemal Üniversitesi Adresli: Evet

Özet

The objective of this study was to determine the effect of initial Body Condition Scores (BCS) on fattening performance, behavioural and physiological responses of dairy fattening steers as a thermal insulator under heat stress. Thirty six Holstein Friesian steers were allocated to three groups. For a period of 5 weeks, twice a week, the behaviour of each steer was registered for 4 h (07:00, 12:00, 18:00 and 22:00 h), recording of eating, lying, fighting, ruminating, standing, grooming and other behaviours. Steers having higher body condition score decreased feed intake (p = 0.007) and daily weight gain with poorer feed efficiency (p<0.001). The frequencies of eating, drinking, ruminating, standing, lying, grooming, fighting and other behaviours for low, moderate and high body condition scored (LBCS, MBCS and HBCS, respectively) of steers were 12.53, 11.58, 8.93 (p