Effects of Pregnancy on Some Serum Electrolytes and Liver Enzymes in Yankasa Ewes
Changes in some serum electrolytes concentrations and liver enzymes in pregnant Yankasa ewes were studied. Thirteen Yankasa sheep comprising 12 ewes (6 pregnant, 6 non-pregnant) and one ram were used. Pregnancy was achieved following natural mating after estrus synchronization by intramuscular administration of cloprostenol (250 µg) to each ewe at 11-day interval. Nonpregnant ewes with normal estrous cycle were served as control. Blood samples were collected from day 0 of observation in both groups and thereafter on bi-weekly basis for analysis of biochemical parameters (aspartate amino-transferase (AST), alanine amino-transferase (ALT), alkaline phosphatase (ALP) and electrolytes (calcium (Ca2+), sodium (Na+) and potassium (K+) using standard methods. Serum AST and ALT levels decreased significantly (p < 0.05) from 2nd to 5th month of gestation compared to control. However, ALP significant (p < 0.05) increased during the gestation compared to control. Mean Ca2+, Na+ and K+ did not vary significantly (p > 0.05) during pregnancy. It was concluded that decreased serum AST and ALT and increased ALP were features of pregnancy in Yankasa ewes. Serum electrolyte levels were not negatively affected during pregnancy in Yankasa ewes.
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