Calving is year-round in the dairy industry, unlike in the beef industry. So the only significance is that you can time several group of cows to calve at different times of the year so that you have a constant supply of milk going to the factories.
Yes. It often signals that the milk production may be decreasing.
Those cows that are consistent in milk production, calving ease, fertility, mothering ability, etc. and are able to breed on time and produce a calf every year.
Lactation is the production of milk by the mammary glands and occurs during pregnancy and after birth if the offspring are being fed their mother's milk. The lactation period of sheep depends upon how long they are allowed to feed their young or how long they are milked for. When either of these cease, so does milk production.
The time when cows are not producing milk or lactating.
A cow SHOULD be producing milk after calving, since this is the kind of liquid that calves have to live off of for the next few months of their lives, or until they are weaned. All cows HAVE to produce milk after they've calved, no exceptions, no matter if they're a beef cow or a dairy cow. However, a cow that is not producing milk after calving is a cow that could be malnourished (being too thin) and doesn't have the reserves to produce enough milk for her calf, or she's too fat, with too much fat deposits in the udder that are hindering milk production. Or, that cow is not being fed proper nutrition, and this is also causing her to not be lactating properly after birth. You will have to bottle-feed the calf until either the cow has been fed adequate nutrition enough to help her with proper milk production, or until he's old enough to be weaned while you put the cow on the cull list and give her a one-way ticket to the salebarn.
The first milk that comes from a cow right after calving is not suitable for human consumption. It's gathered from the cow and saved for the calves that have been taken from their moms and fed to them via the bottle. The first milk is called colostrum, which is important for a newborn calf's health and survival.
No it wont spoil but the tendency is milk production will lessen then dry out.
No idea what you're trying to say here, as colostrum is only produced immediately after calving and is no longer being produced 48 to 72 hours after parturition.
The Production Budget for Milk was $20,000,000.
The udder will only swell, the cow is dropping her milk into the milk cisterns in the udder for the calf to suckle.
milk production
Milk producers truck the milk to bottlers/distributors, usually in 20,000 gallon tanks. The bottler stores the milk in a silo for a short period of time until a production run for bottling. Then the milk is loaded in a truck and delivered to your neighborhood store.