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Serum Enzyme Changes in Newborn Calves Fed Colostrum
Author(s) -
Boyd J. W.
Publication year - 1989
Publication title -
veterinary clinical pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.537
H-Index - 51
eISSN - 1939-165X
pISSN - 0275-6382
DOI - 10.1111/j.1939-165x.1989.tb00514.x
Subject(s) - colostrum , lactate dehydrogenase , enzyme , alkaline phosphatase , endocrinology , medicine , acid phosphatase , enzyme assay , blood serum , biology , andrology , chemistry , biochemistry , immunology , antibody
Summary In 10 newborn Holstein calves, which were initially bottle‐fed on pooled colostrum, there were transient increases in several serum enzymes. Within a few hours, the mean serum γ‐glutamyl transferase (γGT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), acid phosphatase (ACP), and lactate dehydrogenase (LDH) activities increased 62.5, 2.4, 2.0, 1.8 and 1.3 fold, respectively. In two other calves given initial feeds of enzyme‐free pasteurized milk, there were similar increases in serum enzymes, except serum γGT. Correct interpretation of serum enzyme activities in newborn calves must take into account the normal increases which occur after feeding colostrum. Serum γGT was the only enzyme to increase markedly as a result of its absorption from colostrum. The other serum enzymes are presumably released from the tissues of the calf. The increased activities of serum CK observed in some newborn calves probably resulted from trauma during birth or increased muscular activity after birth.