I have been posting here a lot these past months regarding random deaths in my ASF tubs. Just recently I thought I had it under control. I hadn't had any deaths for a couple of litters. Last week I moved all of my weaners into the same tub (there were about 22 of them). Everyone has been active and I have observed them easily getting food and water.

The food hopper is half inch screening so I know they can easily get to the lab block. The water is also very accessible.

I haven't noticed any irregular behavior. And then about 4 days ago, my weaners have started dying. I've lost 5 now and more look weak.

I've made ONE change in this time but can't imagine that change is causing this. I used to keep an unused UTH under the tub to keep them at about 85 because my bathroom easily gets down to the low 70s at night. But like I said, they all huddle together at during the day and are active at night so I didn't think it was that big of an issue.

Could some cooler temperatures being killing off a large amount of my weaners? Any help is always appreciated...

Mitch