Boshouwers F M, Nicaise E
Br Poult Sci. 1985 Oct;26(4):531-41. doi: 10.1080/00071668508416845.
An automatic calorimeter, based on gravimetric principles, for studies on the energy metabolism of the fowl, with simultaneous recording of the physical activity, is described. In order to reduce errors in the determination of heat production to below 3% a three hour experimental period is necessary. The length of this period in comparison to that of the Pettenkofer system is discussed. The relation between heat production and physical activity shows a good fit in a linear regression equation, from which resting heat production is derived. Up to 25% of the total heat production is related to physical activity, mainly during the day-time.
本文描述了一种基于重量法原理的自动热量计，用于研究家禽的能量代谢，并同时记录其身体活动。为了将产热测定中的误差降低到3%以下，需要三个小时的实验期。文中讨论了该实验期与佩滕科费尔系统实验期时长的比较。产热与身体活动之间的关系在一个线性回归方程中显示出良好的拟合度，据此可得出静息产热。总产热的25%与身体活动有关，主要发生在白天。
