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Chapter 6: Instrumentation for Research and Management in Animal Agriculture
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Published in Livestock Energetics and Thermal Environmental Management Chapter 6, pp. 131-149 ( Copyright 2009 American Society of Agricultural and Biological Engineers ). .
Authors: Roger A. Eigenberg, Ray A. Bucklin, Tami M. Brown-Brandl
Keywords: Introduction, Physiological Measurements, Body Temperature, Rectal Temperature, Tympanic Temperature, Vaginal Temperature, Digestive Tract Temperature, Implanted Sensors, Respiration, Automated Monitoring of Respiration Rate in Cattle, Automated Monitorin
[First paragraphs]: All living organisms respond to their environment through sensible and latent heat exchange processes. Many problems in animal agriculture involve interactions with environmental factors--temperature, humidity, solar radiation, and wind--which govern these processes. The interplay among temperature, humidity, and solar radiation can be critical, as there is a defined range of thermal conditions within which animals can maintain homeothermy through behavioral and physiological means, while continuing to consume feed at levels needed to maintain production and health (Hahn, 1999). Management decisions for livestock or environmental control systems require accurate environmental measurements. Livestock research also requires accurate monitoring and control of environment to develop needed relationships between such measures for developing models of animal performance.