Abstract
© 2018 The Korean Society of Veterinary Science. The freemartinism syndrome affects almost all female calves born as co-twins to male calves, whereas little is known about this phenomenon in female sheep. Within this context, 1,185 ewe-lambs from the Ripollesa sheep breed were genotyped for the presence of oY1 polymorphism (a non-autosomal region of the Y chromosome). Neither ewe-lambs from single births (856) nor ewe-lambs from all-female multiple births (170) were revealed as freemartins, whereas five of 159 ewe-lambs from multiple births with male co-twins were freemartins (3.15 ± 1.38%). All freemartin ewe-lambs were confirmed by physical examination of external genitalia. The results confirm a low incidence of freemartinism from heterosexual twin pregnancies in Ripollesa sheep.
Original language | English |
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Pages (from-to) | 858-861 |
Journal | Journal of Veterinary Science |
Volume | 19 |
DOIs | |
Publication status | Published - 1 Nov 2018 |
Keywords
- Freemartin
- Ripollesa breed
- Sheep