The sweat fatty acid content of Holstein and Jersey cows in Summer | [Pakistan Journal of Agricultural Sciences • 2022]

Author(s):

1. Özgül Anitaş: Department of Animal Science, Faculty of Agriculture, Cukurova University,01330, Adana,Turkey

2. Yesim Qzogul: Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, 01330, Adana, Turkey

3. Serap Göncü: Department of Animal Science, Faculty of Agriculture, Cukurova University,01330, Adana,Turkey

Abstract:

Sweat is important in thermoregulation, helping to dissipate heat in the body by evaporation in hot conditions in dairy cows. The purpose of this study was to evaluate the variation of sweat fatty acid compositions in summer conditions in Jersey and Holstein dairy cattle for their potential thermoregulatory roles in animal health protection. Temperature, relative humidity and Temperature-Humidity Index (THI) values were calculated for the intensity of stress in the indoor environment. The chemical compounds of sweat were determined by gas chromatography device and inter-breeds differences were revealed. As a result of analyzes, a total of 23 fatty acids were detected in both breeds. It was understood that there were 15 fatty acids in the Jersey breed. Palmitic acid was detected at a rate of 27.72 % in Holstein cows and 25.16 % in jersey cows that may be due to a higher rate of fatty acid release from muscle tissue, so that it may be less resistant than the jersey breed in heat stress conditions. It can be said that palmitic acid can be an indicator for heat stress conditions. ?SFA and ?PUFA contents of the sweat of Holstein cows were lower than those of Jersey breeds while ?MUFA content was higher than those of Jersey breeds. The high expulsion of ?SFA and ?PUFA in the sweat of the Jersey cows can provide the function of delaying the body's dehydration by forming a hydrolipid film on the skin surface in hot conditions.

Page(s): 901-906

DOI: 10.21162/PAKJAS/22.1534

Published: Journal: Pakistan Journal of Agricultural Sciences, Volume: 59, Issue: 6, Year: 2022

Keywords:

heat stress , Breed , Sweat , dairy cow , fatty acid compositions

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