From the Compassion in World Farming site:
The cows will be virtual indoor milking machines, rarely allowed out to graze
Bred for very high milk yields, these cows are at higher risk of lameness, loss of body condition and infertility
Traditional dairy farmers are likely to go out of business, unable to compete
The countryside will be devastated with huge sheds and daily HGV intrusions
Pig and chicken factory farms already spell disaster for animals, people and the planet. Widescale factory farming of dairy cows would be a further step in the wrong direction.
You can read about it in full here and see photos and footage, blogs etc at the bottom of the page.
My husband grew up on a beef farm (which is now just arable as his father always refused the potential extra earnings to "pump up" his cows artificially or farm intensively which I respect so much) - he feels however things are labelled in the first instance, if this is allowed it will be the thin end of the wedge and become the norm. I shudder at the thought.
The arrogance of man is amazing. Who are we to imprison a beautiful animal like this and force her to give us 22litres + of milk when her calf only needs 4? Oh, and to shoot that calf if it's a boy or send it off to low welfare veal farms.
I'll continue to buy my meat and milk free range or organic, and hope to god the low prices for super-farm milk aren't enough to sway those struggling to feed their families. Which of course it will be. Which is why it cannot be allowed to happen!