How many times can a bull breed its mother?

DO NOT breed a bull to his mother, not unless you have a closed herd with cows and bulls that you have a pedigree history of and want to produce a truly purebred herd. If you do not have any pedigree or genetic history of the bull and his dam, you're going to run into a lot of complications and issues. The calf may die from a fatal genetic disorder, or the cow may give birth to a stunted calf that will not be as vigorous as the calves that are born from that cow from an unrelated bull.

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