Crossbreeding experiment with beef and dual-purpose sire breeds on Danish dairy cows |
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| Authors: | B Bech Andersen T Liboriussen I Thysen K Kousgaard L Buchter |
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| Institution: | 1. National Institute of Animal Science, Department of Cattle Experiments, Copenhagen, Denmark;2. Danish Meat Research Institute, Roskilde, Denmark |
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| Abstract: | The experimental design and objectives are outlined for a crossbreeding experiment with European beef breeds as sire breeds and RDM (Danish Red), SDM (Black Pied Danish) and Danish Jersey as dam breeds.Results from a calving survey of 1006 single calvings are presented. Gestation length, birth weight and calving performance were strongly influenced by breed of sire, breed of dam and sex of calf. The variation in gestation length seemed to have only a slight effect on birth weight. The variation in birth weight had a strong effect on calving performance.The ranking of the sire breeds in descending order according to the frequency of unasisted calvings (which varied from 70 to 26 percent) was as follows: Hereford, Limousin, Danish Red and White Cattle, Simmental, Blonde d'Aquitaine, Chianina, Charolais and Romagnola. |
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