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Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed

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...

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Detalles Bibliográficos
Autores principales: Marí, Pilar, Casellas, Joaquim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Society of Veterinary Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265576/
https://www.ncbi.nlm.nih.gov/pubmed/30304885
http://dx.doi.org/10.4142/jvs.2018.19.6.858
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author Marí, Pilar
Casellas, Joaquim
author_facet Marí, Pilar
Casellas, Joaquim
author_sort Marí, Pilar
collection PubMed
description 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.
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spelling pubmed-62655762018-12-04 Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed Marí, Pilar Casellas, Joaquim J Vet Sci Case Report 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. The Korean Society of Veterinary Science 2018-11 2018-11-28 /pmc/articles/PMC6265576/ /pubmed/30304885 http://dx.doi.org/10.4142/jvs.2018.19.6.858 Text en © 2018 The Korean Society of Veterinary Science http://creativecommons.org/licenses/by-nc/4.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Case Report
Marí, Pilar
Casellas, Joaquim
Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed
title Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed
title_full Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed
title_fullStr Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed
title_full_unstemmed Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed
title_short Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed
title_sort freemartinism in replacement ewe-lambs of the ripollesa sheep breed
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265576/
https://www.ncbi.nlm.nih.gov/pubmed/30304885
http://dx.doi.org/10.4142/jvs.2018.19.6.858
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