 Air quality is a major concern in poultry farming due to the release of ammonia gas, which can have detrimental effects on both animal and human health. This paper reviews the various stages of nitrogen metabolism in poultry, including its consumption, synthesis, excretion, and volatilization. The authors emphasize the need for more research into the causes and consequences of ammonia emissions in order to reduce their impacts on animal and human health. This article was authored by Monique de Oliveira-Valila, Richard Stephen Gates, Cecilia de Fautima-Sousa, and others.