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Hot Carcass Weight: Difference between revisions
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E.g., direct, maternal, permanent environment due to dam. | E.g., direct, maternal, permanent environment due to dam. | ||
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Carcass weight is generally included in a multi-trait model with other carcass traits such as ribeye area (carcass and ultrasound). Only direct genetic effects are fitted. | |||
===Usage=== | ===Usage=== | ||
Revision as of 17:53, 10 December 2019
Phenotype
The weight of the carcass as it leaves the slaughter floor measured by a digital scale.
Adjusted Value
Hot carcass weight is adjusted to an age constant.
Contemporary Group
A contemporary test group is a set of cattle of the same sex that have been raised together and have received equal treatment up to the point of slaughter. All progeny within a contemporary group should be born within a 90-day period, and male calves must be castrated prior to 150 days of age. A contemporary group up to the time of weaning will be subdivided if some cattle go on feed as calves and others are started on feed as yearlings, and if the cattle are then split into two or more slaughter groups. Birth date, identification of sire and dam, breed of dam (or breed proportions in crossbred dams) should be recorded for all individuals.
Genetic Evaluation
Carcass weight is generally included in a multi-trait model with other carcass traits such as ribeye area (carcass and ultrasound). Only direct genetic effects are fitted.
Usage
Hot carcass weight is an economically relevant trait given it represents a direct source of revenue, particularly for those producers that retain ownership of fed cattle and sell the animals on a carcass basis.
