Plasma gastrin in the pig from birth to weaning

Mean (±SEM) plasma gastrin concentration was measured as 84·4 ± 7·0 pmol litre−1 by radioimmunoassay in 35 newly born pigs within one hour of birth but, two-and-a-half hours later, after sucking, it had decreased to 34·9 ±3·6 pmol litre−1. Significant increases (P