We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
ВЛИЯНИЕ НА ЛЕТНИТЕ ТЕМПЕРАТУРИ ВЪРХУ НЯКОИ ХЕМАТОЛОГИЧНИ ПОКАЗАТЕЛИ ПРИ МЛЕЧНИ КРАВИ
- Authors
Иванова, Румяна; Христев, Христо; Ташева, Смиляна
- Abstract
In order to determine the impact of summer temperatures on some haematological parameters in dairy cows, we assessed the microclimate in three buildings used for beeding dairy cows. They were kept as a group living on a permanent litter. We studied the factors of the habitats, behavioral reactions of the animals, body and skin temperature, pulse and breathing frequency. Blood from six animals from each farm, matched by age and physiological condition, was tested for erythrocytes and leukocytes counts as well as hemoglobin values. Temperature-humidity index (THI) was calculated using Tom and McDowell formulas. It was found that THI ranged from 75,7 and 80,2 when using Tom`s formula and between 73,0 and 74,4 when using McDowell`s formula. Body temperature was measured in the physiological norms. Breathing and pulse were slightly accelerated. The values of the haematological indicators showed a rising trend, albeit within the physiological norms for cattle. The variations of the studied indicators are related to changes in the temperature-humidity regime in the buildings. Based on the results obtained we can assume that the indoor environment for the summer period in all three buildings has a risk for thermal stress.
- Publication
Knowledge: International Journal, 2019, Vol 30, Issue 3, p649
- ISSN
2545-4439
- Publication type
Article