My niece has a black angus show heifer. For the last 5 weeks we have been taking her to the vet with her running any where between a 105-108 temperature. she has been given every week tremendous amounts of batamine and newflor. just this last week she became extremely bloated on her left side. and when she breathes it is heavy and deep and when she coughs she coughs up pussy thick white stuff. WE decided to put her down but my question along with the vet's is what is this?! Any ideas?