This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.
László Búza, István Szabó, Jr., László Gombos, László Varga, Veronika Szűr-Gombos István Szabó share their key findings from Hungaria’s PRRS eradication program impact on the environment.
Overview: Hungarian PRRS eradication program carried out 2014-2022, focused on replacing entire herds and using high-performance breeds to improve pig farming. This approach reduced the sow population by over 26% while keeping nearly the same number of pigs for slaughter. As a result, there were significant reductions in harmful emissions, such as ammonia and greenhouse gases, and a decrease in feed and water usage. The results show that tailored animal health strategies and advanced breeding can make pig farming more efficient and environmentally friendly. This highlights the importance of collaboration between scientists, policymakers, and industry to create sustainable livestock practices.
Key Findings:
- Environmental Impact Reduction Through PRRS Eradication
This effort reduced ammonia emissions by 145,857 kg, nitrogen emissions by 1,409,951 kg, and greenhouse gas emissions by 91,768 tons of CO2eq.
- Resource Consumption Decreases
Feed consumption decreased by over 53,000 tons, and water usage was reduced by nearly 300 million liters.
- Sectoral Improvements in Sustainability
The reduction in slurry production (153,879 m³) highlights the connection between improved herd health and waste management.
- Tailored Strategies for Success
Effective eradication and sustainability strategies must be customized for each farm, considering factors like feed, housing, and farm management technologies.
- Broader Lessons for Sustainability
Environmental impact assessments and lifecycle analysis (LCA) are essential tools to understand and minimize emissions across diverse geographical and operational contexts.
Table 1. Reductions in environmental impact of swine production in Hungary (2014–2022).
| Parameter | International Standard | Total in 2014 * | Total in 2022 * | Reduction (2014–2022) * |
| Ammonia (NH3) emissions | 3 kg/sow/barn capacity/year | 600,600 kg | 454,753 kg | 145,857 kg |
| Slurry production | 3.165 m3/animal/year | 633,633 m3 | 479,754 m3 | 153,879 m3 |
| Odor emissions | 949 European odor unit (EOU) | 189,989,800 EOU | 143,850,369 EOU | 46,139,431 EOU |
| Nitrogen emissions | 29 kg/sow/year | 5,805,800 kg | 4,395,849 kg | 1,409,951 kg |
| Greenhouse gas emissions (Carbon footprint) | 7.55 kg CO2eq/kg pork meat | 377,877,500 kg CO2eq | 286,109,138 kg CO2eq | 91,768,362 kg CO2eq |
| Feed consumption | 1095 kg/sow/year | 219,219,000 kg | 165,981,195 kg | 53,237,805 kg |
| Water use | 6026 L/sow/year | 1,206,405,200 L | 913,427,106 L | 292,978,094 L |
Take-Home Message: The tailored health interventions, combined with improved breeding practices and efficient management, can significantly enhance both productivity and environmental sustainability in the swine sector, highlights the importance of customized, farm-specific strategies and collaborative efforts among stakeholders to achieve sustainable livestock production, offering a model for reducing the environmental impact of animal husbandry worldwide.
For more details, access the full article: https://doi.org/10.3390/ani14202924