blood viscosity;
broiler chicken;
plasma protein concentration;
ambient temperature;
D O I:
10.1016/S0306-4565(98)00045-X
中图分类号:
Q [生物科学];
学科分类号:
07 ;
0710 ;
09 ;
摘要:
This paper describes the effects of ambient temperatures on whole blood viscosity and plasma protein concentration in broiler chickens. Whole blood viscosity and haematocrit, compared at 7 and 20 degrees C, decreased significantly at or above 25 degrees C of ambient temperature. However, no marked difference were found between 7 and 20 degrees C or between the temperatures of 25, 30 and 35 degrees C. The heat-induced decrease of whole blood viscosity was found after exposure for 1 h. These results suggest that the heat-induced decrease in blood viscosity is only a level change, which occurs between thermoneutral and high ambient temperature. (C) 1999 Elsevier Science Ltd. All rights reserved.