Genetic component of thermal stress in Jersey crossbred cows using test day production records and NASA POWER meteorological data

Key Points

• Heat stress negatively impacts milk production in Jersey crossbred cows, influencing genetics significantly.
• Production records indicate that variability in thermal stress correlates with genetic factors in dairy cows.
• Assessment using meteorological data and production records shows complex interactions affecting cow performance.
• Findings support the need for tailored breeding programs to mitigate heat stress and optimize production.