Published on Feb. 25, 2026
A strategic collaboration to combat heat stress in sows: the creation of HeatGuard
Heat stress has become one of the most critical challenges in pig farming, driven by the increasing frequency of heat waves and rising global temperatures. For producers, the consequences are substantial with reduced feed intake, declining milk production, fertility problems and elevated sow mortality. In the Netherlands, heat‑related mortality has reached around seven percent, exceeding the accepted five percent norm and creating significant economic losses for farmers.
Recognizing the urgency of this issue, TrouwNutrition, Lintjeshof, Hendrix Genetics Swine, and Wageningen University and Research joined forces to create HeatGuard, a pioneering toolbox specifically designed to detect, prevent and mitigate heat stress in sows. This collaborative effort brings together expertise in nutrition, diagnostics, genetics and applied research, resulting in a comprehensive solution with real, measurable impact for the livestock sector.
A collaborative innovation built on three core pillars
Diagnostics that identify heat stress before damage occurs
HeatGuard integrates cutting‑edge diagnostic technologies, including thermal cameras, smart ear tags and biomarker analysis. These tools allow farmers to detect early physiological changes linked to heat stress, empowering them to act proactively rather than reactively. This early‑warning approach is fundamental to protecting animal welfare and maintaining productivity during extreme temperatures.
Nutrition tailored to sows under heat load
By designing targeted feed strategies adapted to the metabolic needs of lactating sows under heat stress, the project helps stabilize feed intake, sustain milk production and improve nutrient efficiency. These measures directly contribute to better sow performance and reduced environmental impact during hot periods.
Genetic selection for long‑term heat tolerance
Hendrix Genetics Swine provides the genetic dimension of HeatGuard by identifying markers associated with heat tolerance and integrating them into advanced breeding programs. This long‑term strategy paves the way for future sow lines naturally equipped to thrive in warmer climates, ensuring resilience and competitiveness in global markets.
Measurable impact for farmers, animals and the environment
HeatGuard is designed not only to mitigate heat stress but to deliver tangible, data‑driven results. Expected benefits include:
- 20% reduction in heat‑related sow mortality by the end of 2027
- More stable feed intake and milk production during heat waves
- 5% reduction in nitrogen emissions through optimized nutrient utilization
- International scaling potential, with adoption in at least five countries by 2029
By transforming scientific knowledge into practical tools, HeatGuard offers farmers effective solutions to safeguard productivity, protect animal welfare and strengthen economic resilience.
Strengthening the market position of all partners
The collaborative nature of HeatGuard creates value for every organization involved:
- TrouwNutrition is positioned to rapidly introduce new nutritional solutions within and beyond Europe.
- Lintjeshof enhances its diagnostic service portfolio and expands its reach across pig farms.
- Hendrix Genetics Swine develops a next‑generation line of heat‑tolerant sows, providing a clear competitive advantage in the global genetics market.
This synergy supports farm profitability and accelerates the transition toward climate‑smart livestock systems.
A Project with deep societal relevance
HeatGuard directly contributes to the OPZuid "Agriculture and Food" transition and supports broader sustainability goals. By reducing mortality, improving feed efficiency and enhancing animal resilience, the project addresses both economic and environmental priorities. Most importantly, it enables farmers to face rising temperatures with confidence, backed by science‑based tools that truly work in the field.
