Mitigating heat stress impact to protect performance today and tomorrow

Breaking the Cycle: Multigenerational Effects of Late-Gestation Heat Stress and the Potential Mitigating Role of Methionine

As global temperatures rise and heat waves intensify, heat stress is no longer a seasonal nuisance; it is a major physiological disruptor with consequences that extend far beyond today’s milk tank. The immediate impacts of heat stress on intakes, milk yield, and components, as well as health, have been well documented and can be noticed immediately by producers. 

However, long-term consequences of heat stress often go unnoticed by producers. Recent research has uncovered the hidden side of heat stress in dairy cattle, documenting that in addition to milk production losses, heat stress during late gestation also affects the lifetime performance of subsequent generations of cows. While cooling and heat abatement remain critical, meeting essential nutrient requirements, such as the amino acid methionine, during heat stress can add protection.