Research presented at the 2026 American Association of Swine Veterinarians (AASV) Annual Meeting offered new insight into how medication delivery, water quality, and treatment protocols can influence health outcomes in commercial swine production.
Several presentations and posters focused on practical issues veterinarians and producers face when delivering medications through water systems, as well as treatment strategies aimed at improving survivability and animal welfare in nursery pigs.
Water Systems Play a Critical Role in Medication Success
One of the key themes emerging from the research was the importance of water quality and mixing practices when administering medications through drinking water.
Researchers examining production sites found that variations in water chemistry — including hardness, dissolved solids, iron levels, and particulate matter — can affect how medications dissolve and remain stable in stock solutions. These factors can ultimately influence whether pigs receive the intended therapeutic dose.
The work highlighted several operational issues that can unintentionally undermine medication programs, including:
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Insoluble particles in water that contribute to crystallization and clogged medicators
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Continuous agitation systems that increase solution temperature and accelerate drug degradation
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Stock solutions that lose potency when prepared too far in advance
The findings emphasize that medication delivery is not only about selecting the right product, but also about ensuring that mixing, storage, and water system management support consistent dosing.
Simple management adjustments — such as filtering water, avoiding heat-generating agitation systems, and preparing fresh stock solutions more frequently — may help improve dosing accuracy and treatment outcomes.
Combination Treatment Shows Promise in Addressing Nursery Health Challenges
Another research poster examined treatment strategies for ear necrosis in nursery pigs, a condition that can contribute to lameness, welfare concerns, and production losses.
The study evaluated the impact of a combined anti-inflammatory and antibiotic approach administered through drinking water compared to historical protocols used in similar nursery flows.
Across multiple nursery sites, the combined approach demonstrated measurable improvements in outcomes, including:
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Lower overall mortality rates
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Reduced lameness-related mortality associated with ear necrosis
For a typical 5,000-head nursery site, the reduction in mortality represented dozens of additional pigs surviving through the production phase.
Researchers noted that ear necrosis is often associated with systemic inflammatory responses and opportunistic infections. Addressing both infection and inflammation simultaneously may help improve overall pig health and survivability.
Bridging Research and Farm-Level Practice
The research presented at AASV underscores an important takeaway for the industry: the effectiveness of medication programs depends on more than the drug itself.
Water system management, mixing procedures, and formulation stability can all influence whether pigs receive the correct therapeutic dose.
As production systems continue to focus on efficiency, animal welfare, and responsible antibiotic use, improving the reliability of medication delivery systems may become an increasingly important component of herd health programs.
For veterinarians and producers, these findings highlight an opportunity to review on-farm medication protocols and ensure that water systems, equipment, and preparation practices support consistent and effective treatment outcomes.
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