It depends, really. Often if you don't see a cow making any progress an hour or two after the water sac has appeared you will need to go in to help her. If you see the hooves of the calf in the wrong position, only one hoof, only a head, only a tail, or nothing at all, then you have to go in to see if she needs assistance or not. Most cases can be corrected if you know the proper procedures of doing so, but if you find the cow has too big a calf or the calf is in a difficult position that you cannot correct, then you need to call the vet immediately if you want to save the calf and the cow.
A cow that is close to calving, and is far along in her gestation period.
The anestrous period for a cow or heifer after calving is 45 to 60 days, but can range between 25 to 80+ days.
The average should be around 45 to 60 days at the least.
Yes, but it's not recommended. Even 30 days post-partum is too soon to get a cow to breed back. Ideally, you should aim to get your cow bred anywhere from 45 to 90 days post-calving to give her time to rest and allow her uterus to involute or go back to its normal size.
Get her in a head gate, preferably one in a calving pen, if you have one, or a headgate with the squeeze chute side settings set as wide as possible. Next you'll have to glove up (use shoulder-length gloves if you a bit squeemish of going in bare-handed) and go inside the cow's vagina into her uterus to see if the calf is not presented normally. A dystocia calf may have one or two legs turned back, his head turned back, he may be backwards (a breach), or there may be twins that are causing trouble. If it's a simple problem like head turned back or a foot turned back, it shouldn't be too hard to get him in proper position. But you have to be careful about how you get him in position so you don't tear the uterine wall by accident. With feet or head, you have to push the calf back away from the birth canal (against the cow's contractions). With the head malpresentation, reach in and cup your hand around the calf's nose and turn his head so that it's facing towards you (or the rear of the cow). With the leg, cup your hand around the calf's hoof and pull the leg up until it is parallel with the calf's neck. With more difficult presentations like a breach or twins, you may have to call a vet. Other dystocia factors that make it difficult for a cow (or a first-calf heifer) to calve out is that the calf may be too big. A vet is mandatory in this case, as a C-section will have to be done. Make sure you catch the problem early and don't wait for 24 hours after you see the signs of a cow having problem calving out. If you see a cow that is having problems calving, first wait for 2 to 4 hours, and if nothing has progressed, then phone the vet. If you wait for 24 hours or more, you will have a dead calf (and possibly a cow, if you've left it for 3 or 4 days) on your hands.
A cow that is very close to calving or which calving is imminent.
Calving.
A breaching cow could mean a cow that is calving out a backwards calf.
Yes, always.
A cow that is close to calving, and is far along in her gestation period.
Parturition or calving, just like with any other cow.
A calving pen, or out on the pasture.
the cow will get restless and will isolate itself from other cows.
For one cow, it's usually 11 to 12 months in between each calving. For a cow-calf operation with defined breeding and calving seasons, it's always 12 months in between the start of one season to the start of the next.
Absolutely nothing. A pig doesn't care nor cannot help a calving cow.
It means that a cow is giving birth to a newborn baby calf.
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.