London: Cows are cleverer than you thought -- they also have best friends and become stressed if they are separated, a British scientist has claimed.
She said: "When heifers have their preferred partner with them, their stress levels in terms of their heart rates are reduced compared with if they`re with a random individual. "If we can encourage farmers to keep an eye out for those cows which like to keep their friends with them, it could have some real benefits, such as improving their milk yields and reducing stress for the animals, which is very important for their welfare."I`ve spoken to a number of farmers who have said they do notice bonds building among their cows and some spending a lot of time together."McLennan pointed out that modern farming practices mean cows are often separated for visits from the vet or by farmers moving their stock around. "We know re-grouping cows is a problem, because there`s a high level of stress among animals as they try to integrate into a new group," she said. PTI
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