Sorry,I should have made it a bit clearer, it seems to be a general thing with all my lactating cows. I've only really noticed it recently but this has possibly always been the case. I wouldn't have thought anything was wrong by just looking at the cows' dung. It's only when contrasted with the younger stock's that I see the noticeable difference. I wonder if the cows tend to drink more
when lactating or if a mineral balance is involved.