They can be, but not as much as a young bull that has just entered puberty. Heifers, if treated well, can be quite docile and well-mannered. This, of course, may change during and after calving time because of the hormones coursing through them, and their first experiences with ever having a calf.
You may find heifers that are more scared and flighty of you than them being aggressive. When they are cornered in a small corral where they have nowhere to escape, that's when they can turn dangerous.
Yes, they can. But a heifer aborting her fetus is primarily due to high stress, malnutrition, plant poisoning or an infection. Heifers are made to abort their calves with an injection of Estrumate or Lutalyse if they have poor conformation or abnormal reproductive structural features, or if they have a bad temperament that could be dangerous to the producer trying to help them calve out. Heifers that are aborted are sold for meat right away.
A yearling bull, which is best used on heifers, can breed from 10 to 20 heifers in a breeding season.
Since yearling bulls are the best to use on heifers, and one yearling bull will breed from 15 to 20 heifers, you should have 4 bulls for your herd of 70 heifers.
When the heifers are at least 14 months old, you can put yearling bulls (15-20 heifers per bull for yearlings) in with them. Don't put your big mature bulls in with your heifers as this could cause problems later on.
Usually it is better to butcher a beef steer but heifers are okay.
Heifers.
A yearling. Bulls are yearling bulls, heifers yearling heifers (or just heifers). Steers are often just called steers, sometimes yearling steers if you want to be more precise.
Yes. It's not uncommon to background or stocker heifers for beef like what is done for beef steers.
Heifers getting serviced by a bull or through artificial insemination to get pregnant and give birth after 9 months of gestation.
Short bred cows or heifers are females that are in early gestation or pregnancy, mostly in their first trimester.
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Heifers should be vaccinated for Bang's Disease (or Brucellosis) when they are between 2 and 10 months of age.