At least 15 months of age.
At least 15 months of age.
This is the wrong question to ask, actually. You should be more concerned about the age that you should put a heifer in with a bull to be bred, not when should a heifer be taken away from a bull. See the related question below, but generally, a heifer should be at least 15 months of age to be bred and be able to grow a calf in her. Now to really answer your question, the bull should be removed after a couple months of being in with the heifer[s].
Nope, this is much too young for her to be bred. You should wait until she's 15 months old in order to breed her. You can breed her a couple months earlier, but ideally, for her reproductive health and ability to be able to breed back and produce another calf, it's best if she's bred at 15 months of age.
NO!! No, no, no, no, no!! A young heifer (and I'm assuming that's a heifer that is around 6 to 12 months of age) should NOT even be in calf in the first place, nor should she even be serviced by a bull when pregnant! A pregnant should be at least 15 months of age when she is bred, and 26 months when bred again to produce another calf. Some people feel that a heifer should be 24 months of age when she is bred to have her first calf! But NEVER a young heifer, never ever ever!!Get her aborted NOW. Inject her with some Estrumate or Lutylase IMMEDIATELY. Don't waste your time on trying to get a young girl like her to be producing a calf so young, you can afford to wait a few more months or longer!
The best thing to do is to change bulls every three breeding seasons (over a 2 year-period) to avoid inbreeding (i.e., the bull breeding with his daughters). A heifer, from birth, takes around 15 months to reach sexual maturity before she is ready to be bred. Between that time, you can breed your cows once (before the bull's heifers are born), then a second time (when the bull's daughters are around 2 months of age), and finally a third time to the heifer's dams that they have since been weaned off of a few months ago (heifers should be around 10 months of age by the third breeding season) before selling him and purchasing another bull to breed that bull's daughters. You will have to do the math and lay out the generations to see when and how your breeding program will work.
It depends on you and what your plans are for the female and her calf and your experience with calving females. Often bred heifers are cheaper than bred cows, but they can be a pain in the rear when it comes down to calving, because they're predictably unpredictable. A bred cow will have more experience delivering and mothering up to a calf than a heifer will, and if you intend on keeping the calf for breeding (IF it's a heifer), then more often than not, if the cow's a good dam, the calf will be a good keeper. Not so for heifers: any calf that they birth should be raised for slaughter or sold, as they're not as good quality to keep for breeding purposes as her second, third, fourth, etc. calves will be. So it's all up to you.
Characteristics of a good heifer include a level top, smooth, long muscle, and a trim middle. The heifer should also have a long, wide, loin.
A 12 month old heifer should be around 1000 lbs or more, depending on her breeding. Heifers that have the breeding of a heavier breed like Charolais can weigh around 1200 lbs at 12 months of age. Heifers of smaller breeds like Dexter or Jerseys, should weigh around 700 lbs at 12 months of age.
about one year old
the answer is 1lb - 1.5lb
around 5, because the dog will get old, and the hips on the dog aren't that good for breeding, and mounting! you should wait before 1-4 for breeding!
about 13 through 15