Acta Vet. Brno 2007, 76: 17-23

Effect of Low Environmental Temperature on Performance and Blood System in Broiler Chickens (Gallus domesticus)

J. Blahová1, R. Dobšíková1, E. Straková2, P. Suchý2

1Department of Veterinary Public Health and Toxicology
2Department of Nutrition, Animal Husbandry and Animal Hygiene, Faculty of Veterinary Hygiene and Technology, University of Veterinary and Pharmaceutical Sciences Brno, Czech Republic

Received October 2, 2006
Accepted February 20, 2007

The aim of this study was to assess the effect of low environmental temperature on growth, feed conversion, performance and selected biochemical and haematological indicators in broiler chickens. The decrease in air temperature since the 22nd day of growth influenced significantly (p < 0.05) the level of total proteins, uric acid, phosphorus (in female broiler chickens), glucose (in male broiler chickens), haemoglobin (in female broiler chickens) and liver weight (in male broiler chickens). The temperature influenced significantly (p < 0.01) the level of triiodothyronine, haemoglobin (in male broiler chickens), haematocrit, abdominal fat content (in male broiler chickens), and heart weight too. The results have clearly confirmed that during growth, the decrease in environmental temperature (cold stress) negatively influenced some indices of performance and blood system in broiler chickens.