I was the veterinarian for a livestock company in the northwest.
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I was the veterinarian for a livestock company in the northwest. We had 10,000 cows on six ranches in five states with a progressive, well-managed cow/calf operation. The year was 1976.
In October I preg-tested our cows in Owyhee county Idaho. The conception rate was 92%.
Albert managed that set of 2,000 cows and he was concerned…it should have been 94%. We discussed it. I thought 92% was pretty good and he conceded the range was worse than last year. I made no effort to find a cause.
The next fall we worked the cattle again and the conception was down to 90%. Albert had been right. I learned a lesson and set about seeking an answer. I must say that infertility and abortion in big herds is very difficult to confirm. I went through the testable disease: vibrio, lepto, IBR, poison plants, selenium, foothill abortion, metabolic disorders and finally Trichamoniasis.
It was a wild longshot. I had never diagnosed it, nor had I ever heard of anyone who did. But, I went through the collection procedure on 12 head of Albert’s bulls. I had a small laboratory and was good at parasitology in vet school. There, under my microscope, swimming across the petri dish, was a one-celled protozoan with flagellae breast-stroking itself across my screen.