
%0 Journal Article
%A Wodzicka, M 
%T Seasonal variations in wool growth and heat tolerance of sheep. II. Heat tolerance
%J Australian Journal of Agricultural Research
%D 1960/02/01
%V 11
%N 1
%P 85-96
%K 
%R https://doi.org/10.1071/AR9600085
%U https://www.publish.csiro.au/paper/AR9600085 
%X The heat tolerance of rams at an air temperature of 105&#176;F (40.6&#176;C) and 34 mm Hg water vapour pressure was studied over a period of 1 year at Beltsville, Maryland. The rams were more heat tolerant in summer than in winter. This difference was significant (P < 0.001). Tolerance was less in July than in June and August. The reasons for this are discussed. Shearing increased the heat tolerance of rams (P < 0.001), presumably by enhancing the efficiency of evaporative cooling from the skin. There is evidence that shearing reduced heat acclimatization, especially during the cooler months. 
