Hiya Trev
IMLE with OSB mums I have found them to be exceptionally good with not squishing their babies - but don't tempt fate & don't let her pile-up her bedding too deep.
Preparation -
Make sure you're vet knows when she is due - just in case, make sure he/she is familiar with pigs, as not all of them are & make sure you can get hold of him/her 24 hours on-call. You probably won't need vetinary assistance, but it's better to be prepared. Don't let her go for more than an hour between piglets & remember she will have 2 afterbirths - one from each horn of the womb. I keep Oxytocin for emergencies & antibiotics, but if you're not familiar in using them, it's better to call the vet.
- Make sure you've got a spare bulb for your heat lamp - they always seem to blow when there's a new litter
- Have plenty of old towels ready to rub dry newborns & get the mucus out of their mouths. A lined box (under the heat-lamp) just in-case mum gets a bit iffy with the babies (I had a gilt who wouldn't let hers anywhere near her until she'd finished farrowing & she was quite nippy with them).
- Iodeine for the cords. Unless they are very long, leave them, if you have to seperate them do it well away from the tummy & tear or rip against yourself - not the naval or you may cause a hernia.
- Cotton for tying off any bleeding cords - I've had an odd 1 or 2 thay have needed tying-off.
- Sweetheart stout - just in case - a good relaxant for mum - I've given unsettled KK mums up to 2 cans, so I guess OSBs could take an extra can or 2.
- For yourself - a flask of coffee, comfortable chair & a blanket - you'd be surprised how cold it can get waiting about.
If you are keeping the litter indoors for the first week or 2, they will need either Iron jabs or sods of earth, as sow's milk is iron deficient.
Just remember - thousands of pigs have had thousands of babies over thousands of years without our intervention, so don't panic if you miss her starting - a good sign is being able to squeeze milk from her, this usually means she'll start in the next 12 hours. At that stage I check every 2 hours & stay until the afterbirths are expelled - they don't usually eat it, so it's better to dispose of it for them.
let us know how it goes & lots of photos