The infectious organism invades and destroys red blood cells, causing anemia, weakness, and sometimes death. Infected cattle may recover but become carriers that serve as a reservoir of the disease. Anaplasmosis is a major problem in many southern states, but is frequently diagnosed in the Midwest. Top Symptoms Anaplasmosis is most commonly diagnosed when a seriously ill or dead adult animal is discovered. This usually occurs in mid to late summer.
Affected individuals are anemic, weak, off feed, and lose weight rapidly.
Jaundice, or yellowing of the skin, is common but is only observed when the eyes, mouth, and other membranes are examined closely. Difficult respiration, fever of 105 degrees F or higher, dehydration, and constipation are common. Milk production of lactating cows declines dramatically. Affected animals are often excitable or belligerent. Death often occurs within 24 to 48 hours of the onset of symptoms and may be the first indication that anything is wrong in a herd.