You receive a call about a 7-month-old, Angus cross steer wi…
You receive a call about a 7-month-old, Angus cross steer with a sudden onset of “weakness, inappetence, and difficulty breathing” in early October, with no others showing clinical signs. He was vaccinated with multivalent Clostridial and respiratory vaccines and dewormed with injectable doramectin, a macrocyclic lactone, at weaning in March. He has been doing well until 2 days previously, when he had a mild decrease in appetite. This morning, he was extremely depressed and moderately ataxic. On arrival, he’s down on the trailer and on physical exam you find a tachypnea and dyspnea, a rectal temperature of 104.4 °F, and icteric conjunctiva. Unfortunately, he dies during your physical exam. You perform a field necropsy and find locally extensive hepatic necrosis surrounding multifocal dark brown to black areas with flat, ovoid organisms that measure 2 cm x 1 cm in the lesions, and the bladder is full of dark red urine. Which of the following is the best recommendation to prevent this outcome in the future, based on your presumptive diagnosis?
Read DetailsWhile you are processing a group of yearling Angus heifers f…
While you are processing a group of yearling Angus heifers for their prebreeding booster vaccination you note that 2 heifers have multiple round areas of hair loss with white flakey skin mostly on their face and along their neck. You tell the owner that you believe this to be:
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