A VERSATILE RESPIRATORY PATTERN ANALYZER FOR STUDIES OF ENERGY METABOLISM OF LIVESTOCK

Abstract
A respiratory pattern analyzer for livestock is described. Continuous measurements can be made of oxygen consumption and respiratory output of carbon dioxide, methane and carbon-14, from which rates of heat production can be estimated by indirect calorimetry. The apparatus was designed on the basis of four modules (respiratory gas collection; gas flow and monitoring; gas sampling and analyses; recording) which can be operated independently or as integrated systems. The module components are duplicated in different forms to permit flexibility and ease of operation in studies on livestock subject to various thermal environments and experimental situations.

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