Studies on nutrient digestibilities (pre-caecal and total) in pancreatic duct-ligated pigs and the effects of enzyme substitution

absorption digestive acide gras volatil additif aux aliments des animaux aditivos de piensos amilasas amylase amylases cerdo contenido de materia seca digesta digestibilidad digestibility digestive absorption dry matter content dwarfs enano enzyme preparations esterasas esterase esterases feed additives flora microbiana flore microbienne genre humain intestin intestines intestinos mankind microbial flora modele modelos models nain nutrientes nutrients pancreas ph porcin proteasas protease proteases substance nutritive swine viscosidad viscosity volatile fatty acids