Mixed Model Methodology for Farm and Ranch Beef Cattle Testing Programs
- 1 December 1980
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Animal Science
- Vol. 51 (6) , 1277-1287
- https://doi.org/10.2527/jas1981.5161277x
Abstract
Although mixed model methods for multiple traits offer a means for efficient utilization of beef cattle performance test data, excessive computational requirements have precluded routine application. This paper describes how these procedures can be applied to weaning weight and postweaning gain records to estimate breeding values for weaning weight (direct and maternal) and yearling weight. Computational simplifications are emphasized. These include the use of an equivalent model which allows a great reduction in the number of equations that need to be solved. Advantages of these procedures for a genetic evaluation program are discussed. Copyright © 1981. American Society of Animal Science . Copyright 1981 by American Society of Animal Science.This publication has 4 references indexed in Scilit:
- Evaluation and Direction of Beef Sire Evaluation ProgramsJournal of Animal Science, 1979
- Genetic Evaluation of Beef Cattle for Weaning WeightJournal of Animal Science, 1979
- Best Linear Unbiased Prediction of Breeding Values Not in the Model for RecordsJournal of Dairy Science, 1977
- Multiple Trait Evaluation Using Relatives' RecordsJournal of Animal Science, 1976