WHITE SPOTS ON THE GROUND WHERE A HORSE URINATES
QUESTION: Hey, my horses are peeing some sort of white crystals or powder on the ground??? They are fine and I had the vet out and he just shook his head? You don’t notice it when the urine is coming out but later, like now in the spring, the ground where they peed has sort of a white powder on that spot? Help, Please?
ANSWER: Your horses are excreting "Excess Protein" in their urine. It is often really noticeable in the spring now when the snow is leaving. From feeding a lot of protein all winter, you will see patches of fine, whitish powder on the ground where horses have urinated.
Cut back on their protein. Especially Alfalfa or other Legume hays which are higher in protein than Grass hays. Some say, this excess protein will not harm a horse as it is simply excreted in the urine but most Vets generally say to cut back on excessive protein.