Concentration of creatine kinase, aspartate aminotransferase and lactate dehydrogenase in foals from birth up to sixth monthTen Thoroughbred foals, male and female, had the seric concentration of creatine kinase (CK), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH) determined. Blood samples were collected every day from days 1 to 7 and on days 15, 30, 60, 90, 120, 150 and 180 of age. CK activity decreased significantly (p< 0.0003) in the first week and showed significant variation between day 15 and 6 months of age. AST showed a significant (p< 0.0001) increase in its values until 102 days of age, decreasing subsequently until 6 months of age. LDH values decreased significantly (p< 0.0002) between days 15 and 120, increasing subsequently until 6 months of age. At 6 months of age CK, AST and LDH activities were close to those of adult horses.
CK; AST; LDH; foal
