Progesterone promotes foetal growth in a restricted interspecies gestation (Ovis canadensis × Ovis aries)
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| Format: | Artículo científico |
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Universidad Nacional Autónoma de México
2018
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| _version_ | 1876436013626163200 |
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| author | Octavio Mejía Villanueva |
| author_facet | Octavio Mejía Villanueva |
| contents | Progesterone promotes foetal growth in a restricted interspecies gestation (Ovis canadensis × Ovis aries) Octavio Mejía Villanueva Verónica Hernández Cazadero Clara Murcia Mejía Susana Rojas Maya Cristina Castaño García Paula Bóveda Gómez Frida Salmerón Sosa Julián Santiago-Moreno Multidisciplinaria (Ciencias Naturales y Exactas) Ovis aries progesterone foetal growth Ovis canadensis interspecies gestation Gestations between bighorn (Ovis canadensis) and domestic sheep (O. aries) can be considered for ex situ conservation of bighorn. In the first experiment, domestic sheep were inseminated with bighorn or domestic semen. Bighorn inseminated sheep showed lower fertility than domestic inseminated sheep (40% vs. 65%, p = 0.11). Bighorn inseminated sheep had longer gestation periods (152.13 days vs. 146.54 days, p < 0.001) and lower progesterone levels during the last third. Hybrid lambs weighed less than domestic lambs (2.46 kg vs. 5.10 kg, p < 0.001). Their placentas were not as long (48.67 cm vs. 72.17 cm, p < 0.001), were less wide (17.83 cm vs. 23.83 cm, p < 0.001), and the weight of cotyledons was lower (1.50 g vs. 3.20 g, p < 0.001). In the second experiment, hybrid embryos (O. canadensis × O. aries) were transferred into domestic recipients, and pregnant ewes were divided into the treated group, which had a progesterone daily dose of 25 mg from weeks 7 to 20, and the non treated group. Gestation in domestic sheep that received one hybrid embryo and progesterone reached 152.60 days, which was similar to the 153.33 days (p = 0.51) in the non treated sheep. Hybrid offspring of the group treated with progesterone were heavier, 3.41 kg, than the control, 2.21 kg (p < 0.001), and their placentas were longer (71.20 vs. 50.83 cm, p = 0.002). Although progesterone levels were lower in domestic females inseminated with bighorn and in the recipients of hybrid embryos, it is possible to establish pregnancies between both species and the birth of viable offspring. The administration of progesterone during gestation increases the length of the placenta and promotes higher birth weights of hybrids. 2018 artículo científico 0301-5092 https://www.redalyc.org/articulo.oa?id=42371697002 https://www.redalyc.org/journal/423/42371697002/ https://www.redalyc.org/journal/423/42371697002/html/ https://www.redalyc.org/journal/423/42371697002/42371697002.epub https://www.redalyc.org/journal/423/42371697002/movil 10.22201/fmvz.24486760e.2018.3.507 en http://www.redalyc.org/revista.oa?id=423 Veterinaria México application/pdf Universidad Nacional Autónoma de México Veterinaria México (México) Num.3 Vol.5 |
| format | Artículo científico |
| id | redalyc_42371697002 |
| institution | Redalyc |
| language | en |
| publishDate | 2018 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Progesterone promotes foetal growth in a restricted interspecies gestation (Ovis canadensis × Ovis aries) Octavio Mejía Villanueva Multidisciplinaria (Ciencias Naturales y Exactas) Ovis aries progesterone foetal growth Ovis canadensis interspecies gestation Progesterone promotes foetal growth in a restricted interspecies gestation (Ovis canadensis × Ovis aries) Octavio Mejía Villanueva Verónica Hernández Cazadero Clara Murcia Mejía Susana Rojas Maya Cristina Castaño García Paula Bóveda Gómez Frida Salmerón Sosa Julián Santiago-Moreno Multidisciplinaria (Ciencias Naturales y Exactas) Ovis aries progesterone foetal growth Ovis canadensis interspecies gestation Gestations between bighorn (Ovis canadensis) and domestic sheep (O. aries) can be considered for ex situ conservation of bighorn. In the first experiment, domestic sheep were inseminated with bighorn or domestic semen. Bighorn inseminated sheep showed lower fertility than domestic inseminated sheep (40% vs. 65%, p = 0.11). Bighorn inseminated sheep had longer gestation periods (152.13 days vs. 146.54 days, p < 0.001) and lower progesterone levels during the last third. Hybrid lambs weighed less than domestic lambs (2.46 kg vs. 5.10 kg, p < 0.001). Their placentas were not as long (48.67 cm vs. 72.17 cm, p < 0.001), were less wide (17.83 cm vs. 23.83 cm, p < 0.001), and the weight of cotyledons was lower (1.50 g vs. 3.20 g, p < 0.001). In the second experiment, hybrid embryos (O. canadensis × O. aries) were transferred into domestic recipients, and pregnant ewes were divided into the treated group, which had a progesterone daily dose of 25 mg from weeks 7 to 20, and the non treated group. Gestation in domestic sheep that received one hybrid embryo and progesterone reached 152.60 days, which was similar to the 153.33 days (p = 0.51) in the non treated sheep. Hybrid offspring of the group treated with progesterone were heavier, 3.41 kg, than the control, 2.21 kg (p < 0.001), and their placentas were longer (71.20 vs. 50.83 cm, p = 0.002). Although progesterone levels were lower in domestic females inseminated with bighorn and in the recipients of hybrid embryos, it is possible to establish pregnancies between both species and the birth of viable offspring. The administration of progesterone during gestation increases the length of the placenta and promotes higher birth weights of hybrids. 2018 artículo científico 0301-5092 https://www.redalyc.org/articulo.oa?id=42371697002 https://www.redalyc.org/journal/423/42371697002/ https://www.redalyc.org/journal/423/42371697002/html/ https://www.redalyc.org/journal/423/42371697002/42371697002.epub https://www.redalyc.org/journal/423/42371697002/movil 10.22201/fmvz.24486760e.2018.3.507 en http://www.redalyc.org/revista.oa?id=423 Veterinaria México application/pdf Universidad Nacional Autónoma de México Veterinaria México (México) Num.3 Vol.5 |
| title | Progesterone promotes foetal growth in a restricted interspecies gestation (Ovis canadensis × Ovis aries) |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Ovis aries progesterone foetal growth Ovis canadensis interspecies gestation |
| url | https://www.redalyc.org/articulo.oa?id=42371697002 https://www.redalyc.org/journal/423/42371697002/ https://www.redalyc.org/journal/423/42371697002/html/ https://www.redalyc.org/journal/423/42371697002/42371697002.epub https://www.redalyc.org/journal/423/42371697002/movil |