Periodic fluctuations of gut regulatory peptides in phase with the duodenal migrating myoelectric complex in preruminant calves: effect of different sources of dietary protein

calves cinina diet dieta duodenum fish protein concentrate gastrointestinal hormones gastrointestinal motility hormonas hormonas gastrointestinales hormone hormones intestin intestinal motility intestines intestinos kinine kinins leche desnatada movilidad gastrointestinal pancreas pancreozymin peptide peptides proteine proteins skim milk somatostatin somatostatina somatostatine ternero veau