title: [Activity of various phosphatases, leucine aminopeptidase and resorption of L-35S-methionine in the jejunum of birds maintained on diets with different levels of magnesium].
abstract: An experiment was carried out with male broiler chicks from hatching up to the age of 56 days, the composition of the ration used being tabulated. The birds were divided into 4 groups: I--controls that were not given Mg; the basic ration for the birds of the second, third, and fourth group was supplied with 100, 300, and 500 mg Mg per kg of feed, respectively, regardless of the fact that it itself a priori contained Mg at the rate of 1100 mg/kg feed. The activity of p-nitrophenylphosphatase, Mg (Na + K), ATP-ase, 5'nucleotidase, and ;eleucine aminopeptidase as well as the resorption--od L35S-methionine were determined. It was found that the addition of 100 mg/kg Mg to the ration containing 1100 mg/kg Mg led to the considerable increase (P less than 0.01) in the activity of p-nitrophenylphosphatase, Mg, (Na + K), ATP-ase, and 5'nucleotidase in the intestinal mucosa. With the higher rates of magnesium with the addition of 300 and 500 mg/kg to the basic ration the activity of the enzymes cited dropped almost to the level which they had in the control group. The activity of leucine aminopeptidase did not show essential changes at the various levels of magnesium. Neither was the level of magnesium itself of any substantial importance for the resorption of methionine in the small intestine of birds.
mesh_terms: D009597:4-Nitrophenylphosphatase / Q000378:metabolism; D015720:5'-Nucleotidase; D000251:Adenosine Triphosphatases / Q000378:metabolism; D000818:Animals; D017301:Ca(2+) Mg(2+)-ATPase; D002645:Chickens / Q000378:metabolism*; D004032:Diet; D007408:Intestinal Absorption; D007413:Intestinal Mucosa / Q000378:metabolism*; D007931:Leucyl Aminopeptidase / Q000378:metabolism; D008274:Magnesium / Q000008:administration & dosage / Q000494:pharmacology*; D008297:Male; D008715:Methionine / Q000378:metabolism; D009708:Nucleotidases / Q000378:metabolism
chemical_list: D008715:Methionine; D009708:Nucleotidases; D009597:4-Nitrophenylphosphatase; D015720:5'-Nucleotidase; D007931:Leucyl Aminopeptidase; D000251:Adenosine Triphosphatases; D017301:Ca(2+) Mg(2+)-ATPase; D008274:Magnesium
vernacular_title: Aktivnost na niakoi fosfatazi, leĭtsinaminopeptidazata i rezorbtsiiata na L-35S-metionin v ĭeiunuma na pileta, khraneni s dazhbi s razlichni niva na magnezii.