My first time on any forum. Not technical at all but desperate enough to try. Bought 27 head bred momma cows from two dif farms last June. Started calving in sept. still have one left to calve. Have lost two calves have two sick now with respiratory symptoms. Only large animal vet around only does once a week and stays booked, won't treat over the phone. Calves breathing is noisy, like growling sound, frothing at the mouth. Old timers around just say use penicillin so I did. Seemed to knock it out for a few days but would return. My dog vet ordered me Enroflox. Same results. Calves stay by themselves lay down most of the time. But really hard to catch.Thermometer broke not sure on temps. Got them penned but angus mom went nuts and destroyed my gate so I have to doctor in the pasture. Besides the income loss I just don't want a sick animal. Any info would be great, thank you.