Probably the right bull, there could be at least a 60 day window even if they were synchronized, which it sounds like they were. If MGA was used to prevent bulling prior to AI or before turning out with the bull of choice and prostglandin injections were started immediately then it is not uncommon for heifers to breed immediately, mature cows are less likely to breed before 18-21 days after suppression.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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