In terms of mastitis resistance, how do dairy cattle generally perform?

In terms of mastitis resistance, how do dairy cattle generally perform?

• A. Low
• B. Moderate
• C. High
• D. Very High

Answer: (B)

Dairy cattle typically exhibit a moderate level of resistance to mastitis. This reflects the response of dairy breeds to environmental conditions, management practices, and selective breeding strategies that have focused on improving udder health. While certain genetic factors can contribute to an increased resistance to infections, these are balanced against other physiological traits and the overall health management of the herd.

Additionally, mastitis is a complex disease influenced not only by genetics but by factors such as milking practices, hygiene, and cow comfort. Therefore, while breeding programs may enhance resistance to mastitis, it is rare for dairy cattle to have very high or extreme levels of resistance due to the multifactorial nature of the disease. Increasing selective pressure for mastitis resistance can lead to progressive improvement, but it tends not to result in an outright high resistance across all individuals in the population.

Thus, a moderate performance level indicates that while there are efforts and successes in reducing mastitis incidence, there remains a significant risk and susceptibility in dairy cattle.