作者: L. Guédon , J. Saumande , F. Dupron , C. Couquet , B. Desbals
DOI: 10.1016/S0093-691X(99)00083-7
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摘要: Abstract The variations in lipid metabolism according to the physiological stage and their relationship resumption of postpartum ovarian cyclicity were assessed Limousine beef cows fed a grass diet over 3 yr. Weekly blood samples collected from 59 beginning 10 wk before 20 after calving evaluate serum cholesterol triglyceride concentrations electrophoretic lipoprotein fractions. After parturition, progesterone also measured at weekly intervals determine time ovulation. Cows categorized by into groups : early (4 6 post partum, n=36); mid (7 n=46) late (after 11 n=38). Higher values (P