title: gamma-Glutamyltransferase and serum proteins in buffalo calves following colostral ingestion.
abstract: Catalytic activity concentrations of gamma-glutamyltransferase in blood were determined for the evaluation of colostral ingestion. gamma-Glutamyltransferase levels were compared with those of total proteins, albumins and total globulins in the serum, showing good correlation at 2-3 days after birth. gamma-Glutamyltransferase was determined using the Boehringer Mannheim "Reflotron" dry chemistry enzyme strips. After colostral ingestion, blood gamma-glutamyltransferase increased from 35 +/- 19 U/l at birth to 1563 +/- 1283 U/l. Electrophoretic separation of total proteins showed an increase of serum gamma-globulins from 4.2 g/l before ingestion to 32.9 g/l after ingestion. The same analytes were determined in colostrum showing the major protein fraction to be gamma-globulins. gamma-Globulins and gamma-glutamyltransferase permeate to the blood stream, and there is a good correlation between them. The enzyme gamma-glutamyltransferase can be used as an equivalent for the determination of gamma-globulins in the calf serum and the degree of colostral ingestion.
authors.affiliation: Dipartimento di Strutture, Funzioni e Tecnologie Biologiche, Università degli Studi di Napoli Federico II, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Lombardi
authors.forename: L
authors.initials: L
authors.lastname: Avallone
authors.forename: A
authors.initials: A
authors.lastname: d'Angelo
authors.forename: E
authors.initials: E
authors.lastname: Bogin
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000378:metabolism; D001798:Blood Proteins / Q000032:analysis*; D002020:Buffaloes; D003126:Colostrum; D005723:gamma-Glutamyltransferase / Q000097:blood*
chemical_list: D001798:Blood Proteins; D005723:gamma-Glutamyltransferase