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Table 1 Developmental potential of parthenogenetically activated embryos derived from oocytes with different phenotypes and mtDNA profiles

From: Cattle phenotypes can disguise their maternal ancestry

Phenotype mtDNA profile No. oocyte Cleaved (%)* No. (%)* embryo developed to
8-Cell Morula Blastocyst
Bos taurus Bos taurus 89 81 (91.0 ± 2.2)a 38 (42.7 ± 4.8) 27 (30.3 ± 42.0) 27 (30.3 ± 2.0)a
Bos taurus Bos indicus 65 63 (96.9 ± 3.1)a 25 (38.5 ± 5.1) 23 (35.4 ± 2.8) 19 (29.2 ± 1.6)a
Bos indicus Bos indicus 49 21 (42.9 ± 12.1)b n/a n/a 4 (8.2 ± 4.5)b
  1. *Percentages calculated from the number of oocytes that cleaved and developed to each stage. Values are mean ± SEM
  2. Embryos were generated from three cohorts of Bos taurus oocytes with a Bos taurus mtDNA profile and Bos indicus oocytes with a Bos indicus mtDNA profile and four cohorts of Bos taurus oocytes with a Bos indicus mtDNA profile
  3. Different superscripts within a column indicate significant differences (P < 0.05, ANOVA with Duncan’s multiple range test using SAS version 9)