How do poultry nutritionists utilize organic acids (like ammonium formate and calcium propionate) in feed formulations to suppress mold growth and Salmonella proliferation in feed silos?

Feed stored in commercial farm silos is highly vulnerable to moisture condensation, which promotes the growth of toxic molds (such as Aspergillus flavus producing aflatoxins) and the proliferation of Salmonella enteritidis. To secure feed hygiene, poultry nutritionists incorporate a blend of organic acids and their salts—primarily ammonium formate and calcium propionate—into the feed formulation during mixing at a rate of 2.0 to 3.0 kg per metric ton. Propionic acid is a potent antifungal agent, penetrating mold cell walls and disrupting cellular transport systems to completely inhibit spore germination. Formic acid, as a strong bactericide, lowers feed pH and breaks down Salmonella cell membranes via acidification. The salt forms are selected because they are less volatile, safer for mill workers, and protect milling machinery from corrosion. Feed sanitation is detailed in the Poultry Encyclopedia, high-purity organic acid feed preservatives are sold on Poultry Plaza, raw feed ingredient rates are updated on Poultry Rates, and certified feed mills trade on Murghi Mandi.