TITLE:
Daytime Heat Stress, Thermal Pattern, Hyperthermia and Body Caloric Overload in Tropical Acclimatized Holstein and Jersey Heifers
AUTHORS:
Edil E. Araúz-Santamaría, Bryan G. Mendieta-Araica, Roderick A. González-Murray, Gustavo A. Crudeli, David Berroa-Pinzón, Ernesto R. Varillas-Esquivel
KEYWORDS:
Acclimatization, Dairy Cattle, Heat Stress Index, Rectal Temperature, Summer, Temperature Humidity Index
JOURNAL NAME:
Open Journal of Animal Sciences,
Vol.14 No.4,
October
22,
2024
ABSTRACT: The influence of daytime tropical heat stress in the summer was studied in Holstein and Jersey heifers already acclimatized to tropical environments to determine their physiological response based on body thermal patterns and respiratory alterations according to psychrometric caloric indicators. Daytime psychrometric elements showed a tropical caloric potential for developing moderate to severe heat stress in dairy cattle. Body temperature and respiratory rate increased in both breeds open and pregnant (P