Article
Genetic trends for fertility, udder health and protein yield in Swedish red cattle estimated with different models.
Journal of animal breeding and genetics = Zeitschrift fur Tierzuchtung und Zuchtungsbiologie - 1 Aug 2017
Eriksson S, Johansson K, Hansen Axelsson H, Fikse W F
Abstract excerpt
The aim of this study was to estimate and compare genetic trends in Swedish Red cattle using a full multiple-trait (MT) model and trait-group-wise models for female fertility, udder health and protein yield. Field data for maiden heifers from 1989 and cows with a first and second lactation between 1990 and 2007 were included. (Co)variance components were estimated prior to prediction of breeding values. The...
Topics
- Animals
- Cattle
- Dairying
- Female
- Fertility
- Lactation
- Mammary Glands, Animal
- Mastitis, Bovine
- Milk Proteins
- Models, Genetic
- Phenotype
