Here ya go Kym. Ann responded quickly she said:
"Well, it's somewhat true. What happens is they never go out of season, so the hormones never go down, and they can develop anemia. Regardless of whether or not they develop those problems, they do tend to lose condition, weight, etc.
You need to spay them or take them out of season, which can be easily done with a hormone shot. I use HcG to take them out when necessary. But offhand, can't remember the dosage.

My boy falsed them all this year for me. You do want to do something, whether it is breed them, find a v-hob to false them, give them a shot, or spay them.

"