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Table 2 Number of fresh or frozen spermatozoa bound to the zona pellucida of oocytes incubated with UDP Galactose, UDP Glucose or without any additive.

From: The involvement of beta-1,4-galactosyltransferase and N-acetylglucosamine residues in fertilization has been lost in the horse

Groups   UDP Galactose UDP Glucose No additive
Fresh semen No. Oocytes 35 34 33
  Spermatozoa/oocyte (mean ± SEM, n = 3) 42 ± 6 47 ± 7 64 ± 11
Frozen semen No. Oocytes 37 38 38
  Spermatozoa/oocyte (mean ± SEM, n = 2) 29 ± 3 30 ± 2 28 ± 2
  1. No statistical difference was observed between the columns in the same line (for fresh semen F = 1.97 and p = 0.14, for frozen semen F = 0.17 and p = 0.84)
  2. n: number of replicates