Duster has 4 good teats too. But because her bag (not the teats) is big, the 2 on the one side are starting to go red and look sore, but they aren't raw or cracked or anything like that. Its very difficult to explain. They aren't open wounds. Duster can suck, though she does start to lift her leg but he's cottoned on to that and moves or sucks from the other side.
I too am not sure I understand why you are needing to manage the calf. However, here are some things which may or may not be helpful.
1. We use Nettex Udder
Salve, not Battles Udder
Cream (two completely different products) on all our milk cows’ teats. (They all rear their own calves as well as get milked for us.) It emphatically does not prevent the calf from suckling, and it’s superb at keeping the skin on the teats in good order. It does say on the tub to wash it off before letting the calf on, but if you rub it in well, you’ll be fine. It contains only petroleum jelly, lanolin and glycerine. (Or there is a version with iodine added, which you would want to let evaporate for 30 mins or so before letting the calf on.). If you are worried about him having even a tiny bit, put it on her as she goes out, and or after he’s just fed, and not when she’s about to come back to him to feed him.
2. In summer we also use a tea tree and coconut butter ointment on the teats after milking to deter flies. This the calf should not lick, so we only use it on the cows who are weaned by then, or keep the cow separate from the calf for an hour or two after milking.
3. Keeping flies off her, and from picking at the rough and sore spots on her teats, is the biggest factor in having healthy teats.
4. Sounds obvious, but if she’s producing too much milk for the calf, help her by not putting her on your best grass for the first month. If you are bringing her in, you could give her nothing, or just barley straw not hay, haylage or silage overnight, and not too much of it.
5. My experience is that by 4-6 weeks, she will be producing the right amount for the calf, and he will be drinking it all, so you can let up with the careful management.
5. My experience is that even a purebred top quality high production Jersey cow will, once experienced, manage her own production and her calf to keep her udder healthy. She will direct the calf to different teats at different feeds, basically going around the udder feed by feed. She does this by almost imperceptible body language, but the evidence is in the differently emptied quarters!
Hope you manage to find something that works for you, Juniper and Duster
