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Preliminary Selection of Sires on Partial Records in Dairy Cattle
Author(s) -
Sethi I. C.,
Jain J. P.
Publication year - 1994
Publication title -
biometrical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.108
H-Index - 63
eISSN - 1521-4036
pISSN - 0323-3847
DOI - 10.1002/bimj.4710360314
Subject(s) - sire , culling , selection (genetic algorithm) , statistics , best linear unbiased prediction , mathematics , econometrics , biology , computer science , zoology , herd , machine learning
Progeny testing of sires is costly as well as time consuming. The cost and testing time for part sample of sires can be reduced by basing sire evaluation on partial first lactation records. But it results in genetic loss due to decrease in the accuracy of selection. The present paper is an empirical attempt to study the optimum level of preliminary culling on partial records from two different considerations for both large and small populations. It is seen that even for moderate genetic correlation between partial and complete records ( = 0.6) preliminary culling as high as 50% can be effected with advantage.