Covariance functions across herd production levels for test day records on milk, fat, and protein yields.

doi:10.3168/jds.S0022-0302(98)75736-4

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Article

Covariance functions across herd production levels for test day records on milk, fat, and protein yields.

Journal of dairy science - 1 Jun 1998

Veerkamp R F, Goddard M E

Abstract excerpt

Multiple-trait BLUP evaluations of test day records require a large number of genetic parameters. This study estimated covariances with a reduced model that included covariance functions in two dimensions (stage of lactation and herd production level) and all three yield traits. Records came from...

Topics

Animals
Cattle
Female
Genetic Variation
Lactation
Lipids
Milk
Milk Proteins
Models, Genetic
Models, Statistical

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