The optimal concentration and ratio of lactic, citric, acetic, formic, and propionic acids for maximizing growth performance and health in poultry and swine

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2/23/20261 min read

The optimal concentration and ratio of lactic, citric, acetic, formic, and propionic acids for maxim
The optimal concentration and ratio of lactic, citric, acetic, formic, and propionic acids for maxim

Optimum concentration and ratio of organic acids such as lactic, citric, acetic, formic, and propionic acids is critical for enhancing growth performance and health in poultry and swine. These acids function primarily by lowering gut pH, thereby inhibiting pathogenic bacteria and promoting beneficial microbiota (Gänzle, 2015). In poultry, lactic acid at concentrations of 0.5–1.0% has been shown to improve feed conversion ratio (FCR) and reduce pathogen load, particularly Salmonella spp. (Koutsos et al., 2007). Citric acid, when included at 0.5–1.0%, enhances nutrient digestibility and gut morphology, leading to improved growth rates (Zhang et al., 2017). Acetic acid, although less commonly used alone, can synergize with other acids at concentrations around 0.3–0.8% to suppress pathogenic bacteria without adversely affecting feed intake (Mohan et al., 2020). Formic acid, applied at 0.3–0.5%, has demonstrated efficacy in reducing intestinal pathogens and supporting gut health in swine (Kim et al., 2013). Propionic acid, typically used at 0.2–0.5%, aids in controlling mold and spoilage bacteria, indirectly supporting growth performance (Kleessen et al., 2002). The optimal ratios among these acids depend on species and production stage but generally favour a mixture that balances antimicrobial action with minimal feed intake reduction (Ricke et al., 2018). In swine nutrition, higher proportions of formic and propionic acids are often employed to target pathogen suppression effectively (Gao et al., 2019). Excessive acid concentrations can impair feed intake and growth, thus, maintaining a balance is essential (Liu et al., 2014). The optimal acid blend varies, but a combined approach at moderate concentrations enhances gut health, nutrient absorption, and performance (Dibner & Buttin, 2002).

Promois International (www.promoisinternational.com) is one of the best-known manufacturers of encapsulated organic acids.