Pink cows with yellow spots?

摘要

British farmers are colour blind: if it isn't black and white, they won't milk it. Other countries, however, believe in breeding the right cow to do the job - regardless of colour. Livestock Improvement Corporation's (LIC) progress manager. Cross breeding with Jersey may not be everyone's idea of heaven, but we need to focus on profit not tradition. Small percentages add up to significant income, so if the most efficient converters of feed to profit are pink cows with yellow spots from Timbuktu, then that is what we should use. The largest concern facing seasonal calving around the world is fertility. By using NZ Jersey, you get a double shot on increased fertility: 70 percent of all first inseminations in the Kiwi cow result in the birth of a calf; second is the effect of hybrid vigour - the improvement of performance of the crossbred in comparison to the average of the parents. We see crossbreeding in sheep, pigs and poultry and, in time, we will see it widespread in the dairy industry. For theFriesian X Jersey there is a increase of 5 percent due to hybrid vigour across all traits. The Friesian X Jersey in NZ is lasting an extra 347 days of herd life, compared to the normal black and white cow, and an extra 622 days of herd life compared toan animal with 70-80 percent Holstein blood.