Mossy Dell
Well-known member
pdfangus said:. . . When we put good sons of our better cows on other of our better cows the progeny competed very well with the AI sired calves...
as others have said...almost every time I have seen someone bring in new stock there not only was an adjustment period for the new stock but often an unexpected reaction in the existing herd as new bugs come in with new stock....
Amen, brother. Your best old cow is adapted to your environment. I'd keep her bull calf, from natural service or a carefully selected AI bull.
As for bugs, the saying in SE Ohio when I was farming there was that when you mix healthy livestock, you get some dead stock. We don't see all the adaptation happening in our herd or flock, but it is.
It happened to me with my sheep flock. My sheep were adapted to our fescue and weather in the Appalachian hills of Ohio. One fall, I bought some young registered ewes from a good farm in NE Kansas where I got rams. That next spring, it was cool and wet, with cold dense mists. Soon I heard coughing.
After lambing, for the first time, I began to lose lambs to a respiratory illness that caused high fever. And that summer, for the first time, pinkeye went through the flock. The horrible thing was that I lost a high percentage of my lamb crop for three years to this new virus. Very costly and it was hard to treat.
Now those Kansas sheep had been healthy. They couldn't handle our dampness. They got my flock's bug or they gave mine theirs. However it worked, a super bug resulted. It faded—all the flock got immune, probably—I was forever leery of bringing in a bunch of new ewes. One ram never caused a problem, though I know one could; the problem seemed to arise when mixing a handful of unadapted animals with mine.