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4 answers

cattle have a 9 month gestation period , when they are not bred their heat cycle is every 23 days and they breed at different times of year and can calve at any time of year. why you see more calves in late spring is because the rancher wants them bred like that so the cows will have good pasture in the summer while they are raising their calves and when he weans them off the cows he can wean a big group of them that are about the same age and do with what he wants with them either keep and feed them out or sell at auction a load of calves worth taking instead of just 1 or 2 animals this way he has a whole group

2007-11-10 04:53:45 · answer #1 · answered by Larry A 5 · 0 0

Cows are multi estrous animals and a cow will have estrous (heat) cycle each 23 days. All of male mammals are active all of 12 months so cows can mate more than one per year. Pregnancy period in cows are 9 month so one calf per year is the major goal and more desirable in animal agriculture.

2007-11-09 23:19:21 · answer #2 · answered by R.Habibian 1 · 1 0

This is a multifaceted question but one I believe I can answer. Most mammals are have the inborn instinct to mate so that when the offspring is born it will have the most time to thrive, giving it a better chance of surviving longer. If the calf is born in May it has the spring, summer and fall to eat and grow. On the other hand if the calf was born in the winter it is likely that it will die from the cold, a lack of food or both. Hope this answers your question.

2007-11-09 20:56:01 · answer #3 · answered by kachao 2 · 0 0

Usually one per year for each cow. But some are at one time and others are at another time. It's up to the owner if and when they breed unless the bull runs loose in the pasture with the cows.

2007-11-09 19:21:12 · answer #4 · answered by Frosty 7 · 2 0

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