My 11 month old Jersey Heifer had her first "standing heat" the other day...how old do you think she should be before attempting to breed her? I've heard some folks say Jersey's mature early and some have had their first calf by age 2...but that would mean breeding her at 15 months...that seems so young to me....btw I plan on AI'ing her.
I bred my jersey at 15 months. She looked big enough and healthy. I did have one once that I didn't breed until she was 19 months due to her smallish size (she wasn't taken care of properly and matured slower).
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They should be 55-65% of their mature weight before they are bred. Look to her dam to estimate what her mature weight should be.
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Post by sunnyknollecofarm on Apr 16, 2011 14:41:07 GMT -5
Normally, 15 months should be fine for a Jersey or any other common dairy breed (such as Guernseys and Holsteins). With some of the rare breeds, such as milking devons which mature more slowly, people typically wait until they are two years old to breed them, with the first calf born at three years old.
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