Plus, heifers have not been proven yet because they have not calved. Contact details for DairyNZ regional offices, consulting officers, and our Farmer Information Service. The networking and relationships you make with breeders are priceless, no matter what your budget may be. any synchrony programmes. Excessively small heifers should be withheld from mating for their own health and wellbeing. EPD’s stand for “Expected Progeny Difference” which represent an estimate of the bull’s genetic value as a parent and within the breed. Fertility test bulls before mating. Producers are more than happy to share accurate information about the bulls they are selling, including their history. When using bulls there are four critical areas to manage to achieve a high pregnancy rate: Bull ratios of 1 bull for every 15-20 heifers is appropriate if bulls are not being rested. In practice, there may be times when some heifers are significantly behind this target. If synchrony is used, AB should be used for the first mating.
You’ll be finding that perfect bull in no time and looking forward to a successful calving season.
In this May 2, 2014 photo, Jose Chua Lopez, left, holds hands with his mother, Myra Lopez Martinez, during a news conference in Hermosillo,... Worlds of Magic is the spiritual successor to the 1994 game Master of Magic, but it disappoints even by 1990s standards. Consider your options for mating heifers. Our Environment section covers information about climate change, effluent, land, water and nutrient management on dairy farms. Although some farmers have had success with lead-in times as short as overnight, this is not recommended because of the biosecurity risk and the lack of time to manage animal stress. Jobs | You will be able to choose a good heifer bull in your price range. Sharemilking and contract milking arrangements, Purpose, vision, values and guiding principles, Round out your business planning skillset, Round out your financial management skillset, Spring pasture management after an adverse event, New chair brings fresh focus on sustainable dairying, Active Surveillance and grazing management, National Reproductive Strategy Group (NRSG), Body condition and nutrition for reproduction, New traits to improve genetic merit for fertility, Growing NZ’s next generation of dairy scientists. Bulls should be vaccinated against leptospirosis and BVD. Beef heifers that are bred at 13–15 mo and calve at 22–24 mo have two advantages: they get closer attention from herdspeople by calving before the main herd starts to calve, and subsequently they have the extra time needed to rebreed with the mature cow herd. But, when choosing the right bull for heifers, the Birth Weight EPD needs to be low and the Calving Ease EPD needs to be high. Depending on the breed of the heifers, an ideal size to breed them is at least 800 pounds.