Nutritional strategies to reduce emissions from pig sty's..

Pig diets contain both dietary fiber (DF) and crude protein (CP), and the way pigs ferment these ingredients has an effect on the mission of nitrogenous gases and odor from pig manure and piggeries. A study , published in the Journal Animal Feed Science and Technology, the researchers delved into solutions to adapt the diet and to reduce these gas and odor emissions from farms. Nitrogen (N) in the faeces comprises undigested dietary N and endogenous N, mainly as amino acids (AA), and microbial N, partly present in nucleic acids. So one approach to reducing ammonia emission is through dietary manipulation. The inclusion of Dietary fiber and reduction of crude protein(less than 190g/kg) in pig diets seems to be an effective nutritional strategy that may counteract the negative effects of protein fermentation in the pig gut by reducing ammonia concentration, shifting N excretion pathways in the gut and minimizing the negative impact of intensive pig production on the environment. The inclusion of soluble fiber leads to a decrease of urinary N excretion.