Texas FFA Livestock Judging PracticeTest

What disease in cattle often leads to abortions during the last half of pregnancy?

1. Bovine tuberculosis

2. Brucellosis

3. Foot and mouth disease

4. Johne's disease

The correct answer is: Brucellosis

Brucellosis is a significant reproductive disease in cattle caused by the bacterium Brucella abortus. This disease is known to lead to abortions, particularly during the last half of pregnancy. When a cow is infected with Brucella, the bacteria can cause inflammation of the placenta, leading to a condition called metritis, which often results in the expulsion of the fetus. The timing of the abortions, primarily occurring in the late stages of gestation, is a key characteristic of brucellosis. Additionally, brucellosis is also transmissible between animals, as well as from animals to humans (zoonotic), which adds to its severity as a public health concern. The other diseases mentioned have different primary effects or are associated with different clinical presentations, making brucellosis distinct in its association with abortion in pregnant cattle.