Attending a dairy grazing conference last year in Virginia I was listening to a veterinarian for one of the organic grazing coops speak about healthy cows when he pointed out a cow with “happy lines” on her. While the cow wasn’t smiling she did look very healthy and happy. Slick, shiny hair coat and with that nice contented look in her eye all good stockman like to see, and, as the vet pointed out, a string of horizontal lines across her rib cage. He said this was a sign of a cow well in tune with her environment and something we should strive to see in a majority of our cows.
Not being a dairyman, I thought this must be a dairy cow phenonemen, but looking at my fellow attendees, mostly dairyman, I realized they too had just learned something new. Before I could raise my hand to ask more questions the vet was off on another subject while I sat and thought more about this new insight.
Back at the motel I googled “happy lines in cattle” and came up with little more information than what I had just heard. As soon as I arrived home I went out to look among our herd and was pleased to see well over half carried the “happy lines” mark. So now I really wanted to believe the vet was correct for we always want it to be accurate what we want to be true!
Judy and I have noticed it’s not always the fattest cows that have the marks, but it’s only in cows that have a real healthy sheen to their coats. If this is a true marker it would be a terrific way to gauge your forage and mineral program. Sure would appreciate any feedback and input on “happy lines” as it would be nice to know just why it happens and if it’s a true indicator of robust health in our cows.
I’ve added a couple of photos of happy lines on our cows and here’s a of links to an article where happy lines are discussed.