Article
Genetic evaluation of Holstein bulls for somatic cells in milk of daughters.
Journal of dairy science - 1 Apr 1992
Boettcher P J, Hansen L B, VanRaden P M, Ernst C A
Abstract excerpt
Lactational means of somatic cell score from sample days of primiparous DHI cows were analyzed to compare dairy records processing centers for data properties, to examine effects of age at calving and month of calving on somatic cell score, and to calculate preliminary PTA of sires for somatic cell scores. Five processing centers contributed data but differed substantially with respect to availability of records...
Topics
- Age Factors
- Animals
- Cattle
- Cell Count
- Female
- Lactation
- Least-Squares Analysis
- Male
- Mastitis, Bovine
- Milk
- Phenotype
- Seasons
