The adaptation of pancreatic secretion and metabolism in animals with different digestion type to changes in dietary protein ingredients

The adaptation of the pancreas to diet composition is still a matter of discussion. The methodical difficulties related to the sampling of pure pancreatic juice resulted in the scarce and discrepant published data on the alterations of exocrine pancreatic secretion in response to changes in diet composition (A.D. Sineshchekov, 1965; P.P. Berdnikov, 1990; Ts.Zh. Batoev, 2001; A. Huget et al., 2006; V.I. Fisinin et al., 2017; K. Liu et al., 2018); the effects of individual dietary ingredients on the pancreatic secretion were not scrutinized to date. We present a comparative study on the alterations of exocrine pancreatic function in response to the change in dietary protein source (substitution of sunflower cake for soybean cake or meal) with the use of similar methodology for animals with different digestion type; this approach can reveal both specific and common patterns in the respective adaptive reactions. The study was performed on 18 laying hens ( Gallus gallus domesticus L.; cross Hisex White) at 10-12 months of age including 3 hens with chronic fistulae of main pancreatic duct inserted according to the method of Ts.Zh. Batoev (2001), and on 9 piglets (Sus scrofa domesticus L.; hybrid of Danish Landrace and Danish Yorkshire breeds) at 5 months of age and 45-55 kg of live bodyweight including 3 intact piglets, 3 piglets with cannulated pancreatic duct, and 3 piglets with ileal cannulae. It was found that the most responsive enzymatic activity in chicken is lipase: in hens fed diet with sunflower cake the basal (preprandial) level of lipase activity was significantly higher by 37.7 % in compare to diet with soybean meal, postprandial lipase activity in 90 min after feeding higher by 46.6 %; in 150 min after feeding higher by 93.7 % (p function show_eabstract() { $('#eabstract1').hide(); $('#eabstract2').show(); $('#eabstract_expand').hide(); }