Article
Genetic analysis of clinical mastitis, milk fever, ketosis, and retained placenta in three lactations of Norwegian red cows.
Journal of dairy science - 1 Sept 2005
Heringstad B, Chang Y M, Gianola D, Klemetsdal G
Abstract excerpt
The objectives were to infer heritability and genetic correlations between clinical mastitis (CM), milk fever (MF), ketosis (KET), and retained placenta (RP) within and between the first 3 lactations and to estimate genetic change over time for these traits. Records of 372,227 daughters of 2411 Norwegian Red (NRF) sires were analyzed with a 12-variate (4 diseases x 3 lactations) threshold model. Within each...
Topics
- Animals
- Bayes Theorem
- Cattle
- Cattle Diseases
- Female
- Genetic Predisposition to Disease
- Ketosis
- Lactation
- Mastitis, Bovine
- Models, Statistical
- Norway
- Parturient Paresis
- Placenta, Retained
- Pregnancy
- Seasons
