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Table 2 Average weekly body weight loss (kg and %) in the two groups of cows compared to calving week

From: Energy balance, leptin, NEFA and IGF-I plasma concentrations and resumption of post partum ovarian activity in swedish red and white breed cows

Week after calving 2 3 4 5 6 7 S.E. P
          ovarian resumption day ovarian resumption × day
BW loss (kg) A -9 -14 -11 -9 0 -5 8.65 NS NS NS
  B -23 -32 -22 -15 -13 -13     
BW loss (%) A -1.56 -2.50 -2.01 -1.65 0.02 -0.9 1.64 NS NS NS
  B -4.64 -6.46 -4.39 -3.08 -2.75 -2.52