You are presented with a 6 month old Angus heifer that was r…

You are presented with a 6 month old Angus heifer that was recently weaned. The heifer has a temperature of 102 degrees Fahrenheit, heart rate of 120 bpm, and respiratory rate of 100 bpm. You also notice melena, pale mucous membranes, and absent rumen contractions. What condition is most likely afflicting this heifer?  

You are called to examine an 1,100 head, modern swine finish…

You are called to examine an 1,100 head, modern swine finishing barn averaging 200 pounds, for a complaint of skin lesions. The lesions vary from pink to purple in color, are raised, firm, and range from 3-6 cm in diameter. Many of the lesions represent a diamond shape and can easily be palpated. After speaking with the caretaker he informs you that he has seen animals respond after treating the affected animals with penicillin. The most likely cause of the skin lesions is:

You are called to examine a group of dairy calves, because a…

You are called to examine a group of dairy calves, because a few of them have lesions in their mouths.  The affected calves have round, red lesions on their gums, and one calf also has lesions on its lips.  The lesions are somewhat raised around the edges.  The calves otherwise appear to be normal; no calf has diarrhea or lesions on their feet or any other body parts.  No calves have a fever and they all seem to be eating pretty well, though some are a little thin.  Lesions on one of the affected calves are shown in this picture: These lesions are MOST LIKELY due to: