Levels of immunoreactive insulin, neurotensin, and bombesin in porcine colostrum and milk
High concentrations of insulin (411 ± 214 μU/ml), neurotensin-like (265 ± 72 pg/ml), and bom-besin-like immunoreactivities (1995 ± 288 pg/ml) were detected in porcine colostrum using radioimmunoassay, as compared to the levels found in sow blood serum at farrowing (5 μU/ml,