[Enzyme arrangement of various tissues in swine. 2. Studies of postpartum development of crude protein levels as well as activities of various enzymes (GOT, GPT, serine dehydratase, xanthine oxidase, fructose-1,6-diphosphatase) in liver, kidneys and muscle of piglets].

Twenty-eight piglets from three litters were analysed for postnatal development (0 to 6 days of age) of the crude protein levels and activities of various enzymes (GOT, GPT, serine dehydratase, xanthinoxidase, fructose-1,6-diphosphatase) in the supernatant of liver, kidneys, and muscles. Both the weight and crude protein levels of the liver increased after birth, which improved the capability of metabolic regulation. GOT and fructose 1,6-diphosphatase activities in the liver tissue increased over the first days after birth. Serine dehydratase activity was not detectable with regularity. GPT activity in the tissues concerned was low by comparison to GOT and underwent little postnatal change. The activity of xanthinoxidase in the liver tissue tended to go up after birth. ACTH (3 IU/kg live weight) was administered to piglets aged five days and did not increase the activity of GOT and fructose-1,6-diphosphatase in the liver after five hours.