Cows have already been weaned, so you would be referring to a calf, not a cow. The weaning age of a calf is 3 to 4 months when on the bottle, or 6 to 10 when on the cow.
A young "male cow" (which is non-existent, by the way) is called a bullock or a young bull or, if not of weaning age, a bull calf. That is, if the so-called "male cow" is intact. If not, it is called a steer calf if castrated and is still relying on its mother's milk, or simply a steer after weaning or after it reaches around a year of age.
Only a couple weeks.
Most calves are weaned at around 6 to 10 months of age.
Beef calves are the most dependent on their mothers from birth to when they reach 3 months of age. They can be kept on with their mothers for another 3 to 7 months to help in getting higher weaning weights at weaning time. Early weaning (minimum is 3 months) is only used when the cow is losing condition from nursing her calf, or if there is drought. If cows are in good condition and forage is plentiful, they will stay on for 6 to 10 months. In dairy cows though, the calves are pulled off a day or two after they're born, then raised on the bottle. A cow will let her calf nurse for up to two years if she doesn't get pregnant within that time.
Not really, no. A cow will only bellow like this if it's during weaning time, or when she gets separated from her calf and is calling out to it. She will also bellow like this when she's hungry.
A young "male cow" (which is non-existent, by the way) is called a bullock or a young bull or, if not of weaning age, a bull calf. That is, if the so-called "male cow" is intact. If not, it is called a steer calf if castrated and is still relying on its mother's milk, or simply a steer after weaning or after it reaches around a year of age.
Quechua Oblongata
No. Time of weaning does not affect the length of gestation in a cow.
Only a couple weeks.
A cow and calf should not be separated unless you are weaning them. Thus, if you are asking about weaning a cow from her calf and vice versa, you should keep them separate for at least 6 to 8 weeks, longer if the calf tries to go back to suckling his momma again when you put them back together.
A calf needs milk until he's 3 months of age, but most producers like to have them on the cow for another three to five months before weaning them.
Most calves are weaned at around 6 to 10 months of age.
3 weeks old, after weaning.
Yes. A cow that is not producing milk is called a dry cow. Dry cows are those that are a result of the weaning process, and are granted a period of rest before giving birth again.
Negative three to four months, assuming the cow gets bred two months after calving and the calf is weaned at six months of age. Seriously, a cow is already bred and into her second trimester when her calf is weaned. Cows are not like human females where they can only get pregnant again at least a year or 8 to 12 months post-partum.
This will depend if she is at her peak of lactation, when the calf is drinking the most milk, therefore she is producing more. In this case she can be still producing milk for 3 or even 5 months after that. However, if the calf is nearing weaning age (about 10 months), than the cow might be producing milk for about 2 months. This will change from cow to cow depending on how well they produce milk, heavy milkers will produce longer than light milkers.
Beef calves are the most dependent on their mothers from birth to when they reach 3 months of age. They can be kept on with their mothers for another 3 to 7 months to help in getting higher weaning weights at weaning time. Early weaning (minimum is 3 months) is only used when the cow is losing condition from nursing her calf, or if there is drought. If cows are in good condition and forage is plentiful, they will stay on for 6 to 10 months. In dairy cows though, the calves are pulled off a day or two after they're born, then raised on the bottle. A cow will let her calf nurse for up to two years if she doesn't get pregnant within that time.