van Dam J T, Schrama J W, van der Hel W, Verstegen M W, Zwart D
Department of Animal Husbandry, Wageningen Agricultural University, The Netherlands.
Vet Q. 1996 Jun;18(2):55-9. doi: 10.1080/01652176.1996.9694616.
The relationships between heat production, body temperature, and body posture (standing/lying) were studied in goats suffering from trypanosomiasis. Sixteen goats were selected and infected with 1 x 10(6) Trypanosoma vivax parasites and 8 goats served as controls. In week 2, 4, and 6 after infection heat production, body posture, and body temperature were measured at 15-minute intervals. Heat production was higher (P < 0.01) in infected animals compared with control animals (342, respectively 306 kJ.kg- 0.75.d-1), body temperature was also higher (P < 0.001) in infected goats (39.78 degrees C, respectively 38.51 degrees C). The standing related energy costs per day were lower in infected animals (27 respectively 36 kJ.kg-0.75.d-1). Infected animals, therefore, masked part of the energy costs of infection by reducing the standing time. The heat production of infected animals was increased by 21 kJ.kg-0.75.d-1 per 1 degree C fever (7% increase). During periods of standing, body temperature increased with time, whereas during lying periods, it decreased. The number of standing periods was increased in infected animals. It was discussed whether postural behaviour is influenced by thermoregulatory mechanisms.
对患有锥虫病的山羊的产热、体温和身体姿势（站立/躺卧）之间的关系进行了研究。挑选了16只山羊，使其感染1×10⁶ 间日锥虫寄生虫，8只山羊作为对照。在感染后的第2周、第4周和第6周，每隔15分钟测量一次产热、身体姿势和体温。与对照动物相比，感染动物的产热更高（P < 0.01）（分别为342和306 kJ·kg⁻⁰.⁷⁵·d⁻¹），感染山羊的体温也更高（P < 0.001）（分别为39.78℃和38.51℃）。感染动物每天站立相关的能量消耗较低（分别为27和36 kJ·kg⁻⁰.⁷⁵·d⁻¹）。因此，感染动物通过减少站立时间掩盖了部分感染的能量消耗。感染动物的产热每升高1℃增加21 kJ·kg⁻⁰.⁷⁵·d⁻¹（增加7%）。在站立期间，体温随时间升高，而在躺卧期间则下降。感染动物的站立次数增加。讨论了姿势行为是否受体温调节机制的影响。
