Ohio High-Rise Layer Barn: Poultry Ammonia Below 20 ppm in 6 Days with Granular Microbial Treatment

Results at a glance

Metric	Before	After ATp
Barn ammonia	Elevated (winter)	Below 20 ppm
Time to below 50 ppm	n/a	4 to 5 days
Time to below 20 ppm	n/a	6 to 8 days
Bird irritation and stress	High	Eliminated
Feed conversion	Reduced	Improved

The problem

A commercial egg producer operating high-rise layer barns in Ohio experienced elevated ammonia levels during colder months when ventilation was limited to conserve barn temperature. Ammonia accumulation in the manure pits led to poor barn air quality, bird stress, eye and skin irritation across the flock, and reduced feed efficiency that compressed margins on each laying cycle. The operation required a reliable poultry ammonia control solution that could perform consistently under winter ventilation constraints, without relying on corrosive chemical treatments, additional labor, or barn temperature adjustments that would stress the birds. The trial evaluated whether Ammonia Treat for Poultry (ATp), a high-CFU granular microbial treatment formulated specifically for high-rise manure pit ammonia control, could deliver dependable ammonia reduction under real winter operating conditions in commercial layer production.

Before, during, and after

After
Ammonia Treat for Poultry (ATp) was applied as a granular microbial treatment directly to the high-rise manure pits. Within 4 to 5 days, ammonia levels dropped to below 50 ppm, delivering rapid poultry ammonia control even under winter ventilation constraints, with further reduction to below 20 ppm within 6 to 8 days. Bird irritation was eliminated, stress levels declined, and feed conversion improved as barn air quality stabilized across the flock. Based on consistent results, ease of application, and labor savings, the producer adopted once-monthly ATp applications as a standard practice and discontinued multiple less effective alternative products. For commercial layer operations, broiler producers, breeder facilities, and poultry health managers facing winter ammonia spikes in high-rise or deep-pit barn systems, this case demonstrates what high-CFU granular ammonia control bacteria can deliver on bird welfare, feed conversion, and barn air quality without disrupting ventilation strategy or requiring corrosive chemical inputs.

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Product used in this trial

Ammonia Treat for Poultry (ATp)

Ammonia Treat (AM)

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