Addition of eCG to a 14 d prostaglandin treatment regimen in sheep FTAI programs
In the present study, there was evaluation of the alternative of adding eCG as part of a longinterval prostaglandin-F2α (PG) treatment on the reproductive efficiency of Merino sheep during the breeding season. A total of 210 ewes and 182 ewe lambs were randomly assigned to three experimental groups...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Español |
| Publicado: |
Elsevier
2020
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/7997 https://www.sciencedirect.com/science/article/abs/pii/S0378432020304693 https://doi.org/10.1016/j.anireprosci.2020.106597 |
| _version_ | 1855484114270945280 |
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| author | Cueto, Marcela Isabel Bruno Galarraga, María Macarena Fernandez, Jimena Fierro, Sergio Gibbons, Alejandro Eduardo |
| author_browse | Bruno Galarraga, María Macarena Cueto, Marcela Isabel Fernandez, Jimena Fierro, Sergio Gibbons, Alejandro Eduardo |
| author_facet | Cueto, Marcela Isabel Bruno Galarraga, María Macarena Fernandez, Jimena Fierro, Sergio Gibbons, Alejandro Eduardo |
| author_sort | Cueto, Marcela Isabel |
| collection | INTA Digital |
| description | In the present study, there was evaluation of the alternative of adding eCG as part of a longinterval prostaglandin-F2α (PG) treatment on the reproductive efficiency of Merino sheep during the breeding season. A total of 210 ewes and 182 ewe lambs were randomly assigned to three experimental groups to induce the timing of estrus among ewes in a: Long-interval PG, group being synchronized using two doses of PG 14 days apart; Long-interval PG + eCG group being synchronized using the same treatment regimen as Group PG with the addition of 200 IU eCG to the regimen, administered concomitantly with the second PG administration; and MAP + eCG
group being synchronized with intravaginal progestin sponges for 14 days plus 200 IU eCG, administered at the time of sponge removal. The percentage pregnancy rate in ewes of the MAP + eCG group was greater than the ewes of the Long-interval PG and Long-interval PG + eCG groups (76.4 % compared with 52.0 % and 62.5 %, respectively; P < 0.05). The prolificacy rate was greater in the ewes of the Long-interval PG+eCG group compared with the other groups (114 % compared with 100 % and 103 %, respectively; P < 0.05). When considering the fecundity rate, ewes of the Long-interval PG+eCG and MAP+eCG groups had greater values than ewes of the
Long-interval PG group (71.2 % and 78.8 % compared with 52.0 %, respectively; P < 0.05). The Long-interval PG+eCG is an alternative to the conventional progestin sponge plus eCG treatment regimen with there being a greater fecundity rate when this regimen is used compared with the Long-term PG and similar to MAP-eCG treatment regimens. |
| format | Artículo |
| id | INTA7997 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Español |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA79972020-10-02T16:37:40Z Addition of eCG to a 14 d prostaglandin treatment regimen in sheep FTAI programs Cueto, Marcela Isabel Bruno Galarraga, María Macarena Fernandez, Jimena Fierro, Sergio Gibbons, Alejandro Eduardo Reproducción Animal Prostaglandinas Inseminación Artificial Oveja Animal Reproduction Prostaglandins Artificial Insemination Ewes Raza Merino In the present study, there was evaluation of the alternative of adding eCG as part of a longinterval prostaglandin-F2α (PG) treatment on the reproductive efficiency of Merino sheep during the breeding season. A total of 210 ewes and 182 ewe lambs were randomly assigned to three experimental groups to induce the timing of estrus among ewes in a: Long-interval PG, group being synchronized using two doses of PG 14 days apart; Long-interval PG + eCG group being synchronized using the same treatment regimen as Group PG with the addition of 200 IU eCG to the regimen, administered concomitantly with the second PG administration; and MAP + eCG group being synchronized with intravaginal progestin sponges for 14 days plus 200 IU eCG, administered at the time of sponge removal. The percentage pregnancy rate in ewes of the MAP + eCG group was greater than the ewes of the Long-interval PG and Long-interval PG + eCG groups (76.4 % compared with 52.0 % and 62.5 %, respectively; P < 0.05). The prolificacy rate was greater in the ewes of the Long-interval PG+eCG group compared with the other groups (114 % compared with 100 % and 103 %, respectively; P < 0.05). When considering the fecundity rate, ewes of the Long-interval PG+eCG and MAP+eCG groups had greater values than ewes of the Long-interval PG group (71.2 % and 78.8 % compared with 52.0 %, respectively; P < 0.05). The Long-interval PG+eCG is an alternative to the conventional progestin sponge plus eCG treatment regimen with there being a greater fecundity rate when this regimen is used compared with the Long-term PG and similar to MAP-eCG treatment regimens. Estación Experimental Agropecuaria Bariloche Fil: Cueto, Marcela Isabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Laboratorio de Reproduccion de Rumiantes Menores. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Bruno Galarraga, María Macarena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Laboratorio de Reproduccion de Rumiantes Menores. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Fernandez, Jimena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Área de Producción Animal. Laboratorio de Reproduccion de Rumiantes Menores. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Fierro, Sergio. Secretariado Uruguayo de Lana; Uruguay Fil: Gibbons, Alejandro Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Laboratorio de Reproduccion de Rumiantes Menores. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina 2020-10-02T16:30:58Z 2020-10-02T16:30:58Z 2020-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/7997 https://www.sciencedirect.com/science/article/abs/pii/S0378432020304693 0378-4320 https://doi.org/10.1016/j.anireprosci.2020.106597 spa info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Animal Reproduction Science 221 : Art: 106597 (Octubre 2020) |
| spellingShingle | Reproducción Animal Prostaglandinas Inseminación Artificial Oveja Animal Reproduction Prostaglandins Artificial Insemination Ewes Raza Merino Cueto, Marcela Isabel Bruno Galarraga, María Macarena Fernandez, Jimena Fierro, Sergio Gibbons, Alejandro Eduardo Addition of eCG to a 14 d prostaglandin treatment regimen in sheep FTAI programs |
| title | Addition of eCG to a 14 d prostaglandin treatment regimen in sheep FTAI programs |
| title_full | Addition of eCG to a 14 d prostaglandin treatment regimen in sheep FTAI programs |
| title_fullStr | Addition of eCG to a 14 d prostaglandin treatment regimen in sheep FTAI programs |
| title_full_unstemmed | Addition of eCG to a 14 d prostaglandin treatment regimen in sheep FTAI programs |
| title_short | Addition of eCG to a 14 d prostaglandin treatment regimen in sheep FTAI programs |
| title_sort | addition of ecg to a 14 d prostaglandin treatment regimen in sheep ftai programs |
| topic | Reproducción Animal Prostaglandinas Inseminación Artificial Oveja Animal Reproduction Prostaglandins Artificial Insemination Ewes Raza Merino |
| url | http://hdl.handle.net/20.500.12123/7997 https://www.sciencedirect.com/science/article/abs/pii/S0378432020304693 https://doi.org/10.1016/j.anireprosci.2020.106597 |
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