All our animals share the grazing at some time or another.
Sheep, cattle and horses, geese too, hens and ducks. Sheep will
eat the bits horses won't, cattle and sheep will eat the worm
eggs and larvea that affect horses but don't affect them, thus
making the worm burden on the pasture less. Horses eat the
cattle and sheep larvae. There is one type of worm that affects
sheep, cattle and horses but it is killed by most wormers. Mixed
graxing is a good idea, but don't stock sheep too highly or the
poor horse won't get a look in at the grass! Sheep are good at
grazing young ragwort down, they can tollerate young leaves and
will eat it and it won't get a chance to go to seed. As for re
planting sheep grazed grass, now way, otherwise the whole of
Shetland would have to be re planted every year!