Hello I'm new to this board but not new to the cate business. My family has had at least a few cattle all my life, and 3 weeks ago there was a good run of feeder cattle run through our local sale barn and I came home with 30 calves (3 different farms). I brought them home, split out the smallest ones and put them on a small pasture, then put the biggest ones in my barn. They all did great until after I had them for 2 weeks they started showing signs of not feeling good and also the weather wasn't helping with getting 6 in of rain then havering 90 degree days with 90% humidity. Since then they calves are getting worse and worse. I've lost 3 and I've given them everything I have and everything the vet had in his cabinet with now signs of slowing whatever it is down. I've given shots of la 200 to start with along with oxytetracyclene in the water, then as pneumonia like symptoms got worse I gave the sick ones banamine and nuflor, and finally after waiting 4 days and no improvement I've given them draxin and dex with the calves getting worse and worse. Me and the vet are both at wits end and I'm just asking if anybody would have any other ideas as to what might work.