Removing fiber led to an improvement in digestibility and a reduction in fecal production, while adding fiber to the diet decreased digestibility and thus increased fecal production. Fibrozyme improved energy digestibility and decreased fecal production in the soy hull-supplemented diet. Enzymes, such as Fibrozyme, thus can improve the energy utilization of high-fiber diets, and as a result, decrease fecal production. Digestibility and feces production in diets varying in fiber content or supplemented with fiber-degrading enzymes. Acidifiers Ammonia and odor emission is another concern for swine production facilities.
Ammonia is produced when excess dietary proteins are present in the diet.
These proteins are broken down by the animal to form urea, which upon excretion is broken down to ammonia which can then volatilize. As ammonia is derived from excesses in dietary protein feed formulation can greatly affect ammonia emission. Technically, this is certainly true. Practically, though, only small decreases in the protein content of a pig s diet are possible without increasing production costs. Another means to reduce ammonia emission is to alter the pH of excreta.