Dietary carbohydrates alter the fecal composition and pH and the ammonia emission from slurry of growing pigs.

摘要: We investigated the effects of dietary carbohydrates on composition and pH fecal material ammonia emission from slurry growing pigs. Thirty-four barrows (BW approximately 40 kg) were randomly allotted to 1 10 diets. A basal diet was formulated meet all requirements for protein, amino acids, minerals, vitamins. The control composed plus heat-treated cornstarch. In other diets, cornstarch in replaced with three levels either coconut expeller, soybean hulls, or dried sugar beet pulp. Feces collected separately urine a balance experiment. mixed standardized (ratio 1:2.5, wt/wt) form slurry. sample this placed an vitro system determine 16 d at 20 degrees C. DM contents decreased (P < .001) total VFA concentrations increased when level increased. as .001). addition hulls had greatest effect reducing .001), pulp expeller same. linear relationship found between intake nonstarch polysaccharides (NSP) For each 100-g increase NSP, by .12 unit 5.4%. conclude that replacing components have high concentration fermentable increases feces reduces