We will probably learn this is a place where the big pharm and big ag companies are experimenting !!! DNA, genes, etc
This used to be more common before animal husbandry became a science and people would breed to the "best stud" in their local area not realizing that by doing that they narrowed the gene pool and skyrocketed their chances of having birth defects and genetic weaknesses.
If they would bring in three new studs per species to the area the problem would (mostly) go away.
I say mostly because you will always have birth defects in a certain number of births.