[Distribution of alanine and aspartate aminotransferases, gamma-glutamyltransferase, lactate dehydrogenase, alkaline phosphatases and creatine kinase in the main organs of adult goats and kids]. / Distribution de l'alanine et de l'aspartate aminotransférases, de la gamma-glutamyl transférase, de la lactate deshydrogénase, des phosphatases alcalines et de la créatine kinase dans les principaux organes de chèvres adultes et de chevreaux.

In adult ewes, the distribution of enzymes in the liver, kidney, spleen, pancreas, muscle, lung and myocardium was very similar to that in cows or sheep: aspartate aminotransferase (ASAT), alanine aminotransferase (ALAT), lactate dehydrogenase (LDH) and creatine kinase (CK) were mainly in skeletal muscles and the myocardium, while gamma-glutamyl transferase (GGT) and alkaline phosphatases (PAL) predominated in the kidneys. Age-related changes of tissue enzyme patterns were dominated by a dramatic decrease of liver ALAT in adults whereas this enzyme was liver-specific in one month old animals; a decrease of muscle LDH and CK, and an increase of kidney GGT and ALP were also observed in adults.

Transfer of gamma-glutamyltransferase from mother colostrum to newborn goat and foal.

In goat and mare colostrum, gamma-glutamyltransferase (GGT) activity is relatively low (mean values are, respectively, 900 and 350 U/l). In the serum of newborns before suckling, GGT is also low (less than or equal to 28 U/l in goats and less than or equal to U/l in foals); then in goats GGT is much increased on the 1st day (mean = 127 U/l), and it decreases during the following days. In foals, serum GGT slowly but regularly increases for the first 5 days, then decreases. Such differences can be attributed to intestinal protein absorption capabilities which are selective in newborn foals and unselective in goats. Therefore, serum GGT measurement can be a good test of colostrum intake in newborn goats, but not in foals.