Article
Analysis of test day yield data of Costa Rican dairy cattle.
Journal of dairy science - 1 Jan 1998
Vargas B, Perez E, Van Arendonk J A
Abstract excerpt
Estimates of variance components for test day records in an animal model that considered multiple traits over multiple lactations were calculated using REML methodology. Test day records were classified into 11 periods within first and later lactations. Missing ancestors in the relationship matri...
Topics
- Animals
- Breeding
- Cattle
- Costa Rica
- Female
- Genetic Variation
- Lactation
- Models, Statistical
- Parity
- Phenotype