Depends on what you're operation requires. Often vaccinations for things like Clostridia (9-way), Lepto (5-way), IBR/BRDV, selenium (for those areas that are Selenium deficient), Scours prevention, and Vibrosis are necessary. Talk to your vet for a proper health assessment for your pregnant cows.
you need to give the mare a rhino shot in the 3rd, 6th and 9th months of pregnancy
There is no need to delay pregnancy after hepatitis A and hepatitis B vaccine.
A heavily pregnant cow, or a long-bred cow. Or, a cow that is expecting soon.
two
A pregnant cow who gives birth is a mother.
It is different for different shots so I suggest you ask the person who gave you the vaccinations.
A mare should have all of her regular vaccinations and possibly a booster in her 9th month.
Unless it's a very special chicken they don't need vaccinations.
No, the cow will not go into estrus after she becomes pregnant.
Talk to your cow. If she is pregnant your character will mention how see and her baby is doing. If your character does not mention a baby then your cow is not pregnant.
Bred cow.
No.