Usually most calves are vaccinated when they are a bit older than a day to two days of age. There's nothing that says you can't, however. You will need to revaccinate them when they are around 4 to 6 months of age.
There really isn't a treatment for Blackleg, since it is a highly fatal disease, except for giving the calf massive doses of penicillin or tetracyclines when the disease is in the early stages. This will sometimes help, though most cases the calf perishes anyway, and those calves that do get blackleg will die before you have a chance of knowing that they even got it.The best thing to do is to have a prevention program against blackleg in your herd. This means vaccinations; the recommendation is to vaccinate all calves that are about 3 to 4 months of age, followed by a second shot or booster vaccination when they are 12 months of age. In endemic areas (or areas where the bacteria Clostridia chauvoei are highly prominent), calves should be vaccinated when they are about 1 month of age. A natural resistance tends to develop when they reach 2 years old.
A calf should be given milk (non-pasteurized) until it is around 3 months of age, not after so many days.
A young bovine needs to be YOUNG, i.e., 0 days (birth) to 6 or 10 months of age (weaning) to "qualify" as a calf.
No, but it can have hay. Hay can be given to a calf at any age.
It could be that she's going into heat, and is ready to be bred. Her calf would be around 2 months of age (or 45 to 60 days old) by this time.
Veal is beef from a young calf that has yet to start eating plants; the meat is supposed to be tenderer than from an older cow. There are different classifications of veal, from bob veal (calf less than 10 days old) up to old veal (calf up to 4 months old).
You are the one who has to keep milking her if you want to keep getting milk from her after her calf dies. Otherwise, she will begin to dry up after a few days and be completely dry after a couple weeks.
Look for how much the calf has filled out in its frame, body to leg-height ratio, and weight gain. You can also look at a calf's teeth to tell its age.
The most accurate way to tell the age of your calf is by looking at his front teeth. A newborn calf will have no teeth; a week old calf will only have maybe one or two teeth that have popped up already; a 1 month old calf will have all 8 lower incisors already.
A baby calf is just that: a baby, not an animal that is able to breed yet. Calves are only able to breed by the time they are around 15 months of age, and at that age they have lost their calf stage.
Yes. The only thing is that this "bull" is actually called a bull calf: the "calf" part of "bull" is dropped after the calf reaches around yearling age (~9 to 10 months of age). A cow has just as much of a chance of giving birth to a bull calf as a heifer calf. The sex or gender of her calf is determined by the sperm of the bull she was bred to, not the cow herself.
A dog of any age can contract parvovirus if it has not been vaccinated.