Labour-saving methods for energy-balance experiments with cattle; description of equipment and methods used.

Abstract

A number of methods are discussed for reducing the labour required for energy-balance experiments, e.g. improved organisation of the work, increased length of the respiration experiment, reduction of the number of analytical determinations, the use of physical methods of gas analysis and the calculation of the results of respiration and balance experiments with an electronic computer. A description is given of the equipment used for measuring gas exchange of cattle. A survey of the respiration equipment is given in FIG. 1. The two respiration chambers were originally designed by the former director of the laboratory, Prof. Dr. E.