Epigenomics in Livestock: A Crucial Key to Understanding Heat Stress Adaptation

Research presented by scientists at Wageningen Livestock Research in the Netherlands highlights the significance of epigenomics in understanding heat stress adaptation in monogastric livestock. According to the study published in Frontiers in Genetics, epigenetic changes induced by heat stress can have short- and long-term effects on production performance and health in livestock. The researchers emphasize the importance of studying epigenomic alterations to shed light on coping and adaptive abilities in livestock during heat stress. Nutritional interventions are identified as a promising way to mitigate the epigenetic changes caused by heat stress.

Key Takeaways:

• Epigenomics, the study of epigenetic changes on a genome-wide scale, has shown great promise in revealing biological mechanisms underlying phenotypes in livestock.
• The interaction between animal genetics, physiology, environment, and management practices has a bidirectional relationship with the epigenome, influencing and being influenced by it.
• Epigenetic changes induced by heat stress have been observed in livestock, resulting in alterations that affect production performance and health.
• Research provides strong evidence that gene expression in livestock is influenced by epigenetic processes such as DNA methylation, histone modifications, chromatin remodeling, and non-coding RNAs during heat stress.
• Nutritional interventions are a promising strategy to mitigate the epigenetic changes induced by heat stress.
• A better understanding of the molecular mechanisms involved in regulating gene expression during heat stress is crucial to identify strategies and interventions that can maintain or improve the health and productivity of monogastric livestock.
• The study highlights the importance of epigenomics in understanding the adaptation of livestock to environmental conditions, particularly heat stress.
• The researchers suggest that epigenetic changes can be used as biomarkers to monitor the adaptation of livestock to heat stress.

Statistics:

• Research has shown that heat stress has a significant impact on livestock production, with losses of up to 2.5% per degree Celsius increase in temperature (Source: Wageningen Livestock Research).
• Epigenetic changes induced by heat stress can result in short- and long-term alterations, with the latter having a greater impact on production performance (Source: Frontiers in Genetics).
• DNA methylation, histone modifications, chromatin remodeling, and non-coding RNAs are all epigenetic processes that are influenced by heat stress (Source: Frontiers in Genetics).
• The study found that nutritional interventions can mitigate epigenetic changes induced by heat stress, with improvements in production performance and health observed in some cases (Source: Frontiers in Genetics).
• Research has shown that monogastric livestock can adapt to heat stress through epigenetic changes, but more research is needed to fully understand the mechanisms involved (Source: Wageningen Livestock Research).

Sources:

• Mini review: Studying epigenomic alterations can shed light on coping and adaptive abilities during heat stress in monogastric livestock. Frontiers in Genetics, 2025,16. (Frontiers in Genetics - http://journal.frontiersin.org/journal/genetics)
• Wageningen Livestock Research, Wageningen, Netherlands (source: Wageningen Livestock Research)