i've come to taynton court in gloucestershire.arge dairy farm, which has been recognised by the industry for its high welfare standards. they're happy to show me how and why they separate calves at birth. roger blowey is a vet who's been looking after the animals here for a0 years. you can see the cows all lined up, and as soon as there's a space, the cow goes onto the platform. we're here for the first of two daily milkings. over the next few hours, 800 cows will pass through this rotating milking parlour. we haven't been here long when there's news that a cow is in labour. we head over to the calving shed. do you know how long she's been showing signs, alec? about an hour, hour and a half. how long would you leave it before you maybe intervene? yeah, about this time, hour and a half, two hours. oh, right, here we go. on examining the cow, there's a surprise in store. now that alec�*s examined it, he finds it's got... there's, there's two heads there. so, it's a twin birth. calving plays a vital part in the milk production proces