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Published online by Cambridge University Press: 02 September 2010
With man, weight-for-age is taken as a useful guide to fitness. In the case of cattle, weight is used as an indicator of fitness or suitability for sale, for slaughter, for service and during pregnancy. Consequently machines for livestock weighing will become almost as common on the farm as personal scales are in the bathrooms of many homes. However animals do not read their own weights and seldom stand still during the exercise.