The effect of melatonin and season on in vivo embryo production of Dohne Merino ewes
To determine the effect of melatonin on embryo production in superovulated donor Dohne Merino ewes, two experiments were carried out at Trelew, Argentina (43° S 65° W), during the breeding and the anestrous seasons. Twenty-two ewes were used in experiment 1 (breeding season). Animals were divided in...
| Autores principales: | , , , , , |
|---|---|
| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
2018
|
| Materias: | |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0921448814001424 http://hdl.handle.net/20.500.12123/2785 https://doi.org/10.1016/j.smallrumres.2014.05.003 |
| _version_ | 1855483119835021312 |
|---|---|
| author | Buffoni, Andres Vozzi, Pedro Alejandro Gonzalez, Diego Martin Rios, Glenda Laura Viegas Bordeira, Jorge Horacio Abecia, José Alfonso |
| author_browse | Abecia, José Alfonso Buffoni, Andres Gonzalez, Diego Martin Rios, Glenda Laura Viegas Bordeira, Jorge Horacio Vozzi, Pedro Alejandro |
| author_facet | Buffoni, Andres Vozzi, Pedro Alejandro Gonzalez, Diego Martin Rios, Glenda Laura Viegas Bordeira, Jorge Horacio Abecia, José Alfonso |
| author_sort | Buffoni, Andres |
| collection | INTA Digital |
| description | To determine the effect of melatonin on embryo production in superovulated donor Dohne Merino ewes, two experiments were carried out at Trelew, Argentina (43° S 65° W), during the breeding and the anestrous seasons. Twenty-two ewes were used in experiment 1 (breeding season). Animals were divided into two groups: group M (melatonin, n = 11) received a melatonin implant 48 days before superovulatory treatment, and C (control, n = 11), non-treated. Two intrauterine artificial inseminations were performed 33 and 48 h after sponge removal. Embryos were collected 7 days after the onset of oestrus (58 days after the onset of melatonin treatments). Twelve ewes of the same breed were used in experiment 2, which was carried out during the anestrus season, under the same experimental procedures (group M, n = 6; group C, n = 6). Treated ewes presented a significant delay in the onset of oestrus during the breeding season (M: 31.10 ± 1.04; C: 25.20 ± 0.98 h; p < 0.05). Melatonin induced a significant reduction in the number of degenerated embryos per ewe during seasonal anestrus (M: 0.60 ± 1.74; C: 3.00 ± 1.74; p < 0.05). No differences between groups and seasons were observed for ovulation, fertilization and viability rates, and the number of viable embryos per ewe. In conclusion, our results indicate that the use of melatonin to improve embryo production in MOET sheep programs in the Dohne Merino breed at 43° S does not improve fertility and embryo viability. Although, a reduction of the number of degenerated embryos during the anestrous season was observed in the treated group. |
| format | Artículo |
| id | INTA2785 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA27852019-05-08T13:53:33Z The effect of melatonin and season on in vivo embryo production of Dohne Merino ewes Buffoni, Andres Vozzi, Pedro Alejandro Gonzalez, Diego Martin Rios, Glenda Laura Viegas Bordeira, Jorge Horacio Abecia, José Alfonso Oveja Razas (animales) Experimentación in Vivo Embriones Animales Melatonina Ewes Breeds (animals) In Vivo Experimentation Animal Embryos Melatonin Raza Merino To determine the effect of melatonin on embryo production in superovulated donor Dohne Merino ewes, two experiments were carried out at Trelew, Argentina (43° S 65° W), during the breeding and the anestrous seasons. Twenty-two ewes were used in experiment 1 (breeding season). Animals were divided into two groups: group M (melatonin, n = 11) received a melatonin implant 48 days before superovulatory treatment, and C (control, n = 11), non-treated. Two intrauterine artificial inseminations were performed 33 and 48 h after sponge removal. Embryos were collected 7 days after the onset of oestrus (58 days after the onset of melatonin treatments). Twelve ewes of the same breed were used in experiment 2, which was carried out during the anestrus season, under the same experimental procedures (group M, n = 6; group C, n = 6). Treated ewes presented a significant delay in the onset of oestrus during the breeding season (M: 31.10 ± 1.04; C: 25.20 ± 0.98 h; p < 0.05). Melatonin induced a significant reduction in the number of degenerated embryos per ewe during seasonal anestrus (M: 0.60 ± 1.74; C: 3.00 ± 1.74; p < 0.05). No differences between groups and seasons were observed for ovulation, fertilization and viability rates, and the number of viable embryos per ewe. In conclusion, our results indicate that the use of melatonin to improve embryo production in MOET sheep programs in the Dohne Merino breed at 43° S does not improve fertility and embryo viability. Although, a reduction of the number of degenerated embryos during the anestrous season was observed in the treated group. EEA Chubut Fil: Buffoni, Andres. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; Argentina Fil: Vozzi, Pedro Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; Argentina Fil: Gonzalez, Diego Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; Argentina Fil: Rios, Glenda Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Viegas Bordeira, Jorge Horacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut; Argentina Fil: Abecia, José Alfonso. Universidad de Zaragoza. Facultad de Veterinaria. Departamento de Producción Animal y Ciencia de los Alimentos; España 2018-07-13T13:56:47Z 2018-07-13T13:56:47Z 2014-07 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0921448814001424 http://hdl.handle.net/20.500.12123/2785 0921-4488 https://doi.org/10.1016/j.smallrumres.2014.05.003 eng info:eu-repo/semantics/restrictedAccess application/pdf Small Ruminant Research 120 (1) : 121-124 (July 2014) |
| spellingShingle | Oveja Razas (animales) Experimentación in Vivo Embriones Animales Melatonina Ewes Breeds (animals) In Vivo Experimentation Animal Embryos Melatonin Raza Merino Buffoni, Andres Vozzi, Pedro Alejandro Gonzalez, Diego Martin Rios, Glenda Laura Viegas Bordeira, Jorge Horacio Abecia, José Alfonso The effect of melatonin and season on in vivo embryo production of Dohne Merino ewes |
| title | The effect of melatonin and season on in vivo embryo production of Dohne Merino ewes |
| title_full | The effect of melatonin and season on in vivo embryo production of Dohne Merino ewes |
| title_fullStr | The effect of melatonin and season on in vivo embryo production of Dohne Merino ewes |
| title_full_unstemmed | The effect of melatonin and season on in vivo embryo production of Dohne Merino ewes |
| title_short | The effect of melatonin and season on in vivo embryo production of Dohne Merino ewes |
| title_sort | effect of melatonin and season on in vivo embryo production of dohne merino ewes |
| topic | Oveja Razas (animales) Experimentación in Vivo Embriones Animales Melatonina Ewes Breeds (animals) In Vivo Experimentation Animal Embryos Melatonin Raza Merino |
| url | https://www.sciencedirect.com/science/article/pii/S0921448814001424 http://hdl.handle.net/20.500.12123/2785 https://doi.org/10.1016/j.smallrumres.2014.05.003 |
| work_keys_str_mv | AT buffoniandres theeffectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT vozzipedroalejandro theeffectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT gonzalezdiegomartin theeffectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT riosglendalaura theeffectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT viegasbordeirajorgehoracio theeffectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT abeciajosealfonso theeffectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT buffoniandres effectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT vozzipedroalejandro effectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT gonzalezdiegomartin effectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT riosglendalaura effectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT viegasbordeirajorgehoracio effectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes AT abeciajosealfonso effectofmelatoninandseasononinvivoembryoproductionofdohnemerinoewes |