Mastitis Occurrence in Dairy Animals

Mastitis is common in:

Correct Answer: High yielder

Mastitis (inflammation of the mammary gland/udder) is more common in high yielding dairy animals. High-yielding cows have larger udders with more milk, making them more susceptible to bacterial infection and mechanical injury.

Why High Yielders Are More Susceptible

• Larger udder size → more exposure to pathogens
• Higher milk production → more stress on udder tissue
• Milk let-down reflex is more active → teats remain open longer
• Higher metabolic stress

Why Other Options Are Wrong

• Poor yielder: Less milk production means less udder stress and lower mastitis risk.
• Moderate yielder: Lower risk than high yielders.