Comparison of the 7-day CO-Synch and 8-day estradiol-based protocols for estrus synchronization and timed artificial insemination in suckled Bos taurus cows
Two experiments were conducted to compare, follicle diameter (FD) on Day −1, corpus luteum (CL) area on Day 7, progesterone (P4) concentration on Day 7 and 18, pregnancy per timed artificial insemination (TAI) on Day 30, and pregnancy loss (PL) between Days 30 and 60 after TAI (TAI, Day 0) using two...
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2023
|
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/14227 https://www.sciencedirect.com/science/article/abs/pii/S0093691X23000407 https://doi.org/10.1016/j.theriogenology.2023.02.003 |
| _version_ | 1855037080123473920 |
|---|---|
| author | Rodriguez, Alejandro Martin Maresca, Sebastian Lopez Valiente, Sebastian Bilbao, María Guillermina Moran, Karen D. Bartolome, Julián Alberto Pratt, Scott L. Long, Nathan M. |
| author_browse | Bartolome, Julián Alberto Bilbao, María Guillermina Long, Nathan M. Lopez Valiente, Sebastian Maresca, Sebastian Moran, Karen D. Pratt, Scott L. Rodriguez, Alejandro Martin |
| author_facet | Rodriguez, Alejandro Martin Maresca, Sebastian Lopez Valiente, Sebastian Bilbao, María Guillermina Moran, Karen D. Bartolome, Julián Alberto Pratt, Scott L. Long, Nathan M. |
| author_sort | Rodriguez, Alejandro Martin |
| collection | INTA Digital |
| description | Two experiments were conducted to compare, follicle diameter (FD) on Day −1, corpus luteum (CL) area on Day 7, progesterone (P4) concentration on Day 7 and 18, pregnancy per timed artificial insemination (TAI) on Day 30, and pregnancy loss (PL) between Days 30 and 60 after TAI (TAI, Day 0) using two different synchronization protocols. In Experiment 1, Angus cows (n = 1148) were randomly assigned to either 7-d progesterone CO-Synch (7-d CO-Synch) or 8-d progesterone + estradiol (8-d P + ES) synchronization protocols for TAI. On Day −10, cows in the 7-d CO-Synch treatment group (n = 574) received a progesterone-releasing intravaginal device (PIVD; 0.5 g P4) and GnRH (0.105 mg), on Day −3 the PIVD was removed and cows received cloprostenol (0.150 mg), then, on Day 0 (64 h after PIVD removal), cows received GnRH (0.105 mg) and were TAI. On Day −10, cows in the 8-d P + ES treatment group (n = 574) received a PIVD (0.5 g P4) and estradiol benzoate (2.0 mg), on Day −2 the PIVD was removed, and cows received cloprostenol (0.150 mg) and estradiol cypionate (0.5 mg), then, on Day 0 (48 h after PIVD removal), cows were TAI. Pregnancy per TAI was determined on Days 30 and 60. In a subset of cows (7-d CO-Synch, n = 41; 8-d P + ES, n = 40), serum P4 concentration was evaluated on Day 18. In Experiment 2, anestrus (n = 34) and cyclic (n = 34) suckled beef cows were selected and submitted at random on Day −10, to either 7-d CO-Synch or 8-d P + ES treatment groups. Follicle diameter on Day −1, CL area, and serum P4 concentration on Day 7 were determined. In Experiment 1, pregnancy per TAI on Day 30 did not differ (7-d CO-Synch = 48.9%; 8-d P + ES = 45.6%) between treatments but it was greater for cows with BCS ≥5 (P < 0.01). Pregnancy loss between Days 30 and 60 did not differ between treatment groups but tended to be greater in cows with BCS <5.0 (P < 0.1). In a subset of cows, serum P4 concentration on Day 18 did not differ between treatment groups but tended to be lower (P < 0.1) in cows that had PL between Days 30 and 60 compared to cows that had no PL. In Experiment 2, FD tended to be greater (P < 0.1) and CL area was greater (P = 0.05) in anestrus cows from 7-d CO-Synch treatment. In cyclic cows, the treatment did not affect the FD or CL area. In conclusion, there was no difference in pregnancy per TAI on Day 30 and PL between Days 30 and 60 between cows using 7-d CO-Synch + PIVD or 8-d estradiol-based + PIVD protocols for estrus synchronization and TAI. |
| format | info:ar-repo/semantics/artículo |
| id | INTA14227 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA142272023-03-14T17:20:51Z Comparison of the 7-day CO-Synch and 8-day estradiol-based protocols for estrus synchronization and timed artificial insemination in suckled Bos taurus cows Rodriguez, Alejandro Martin Maresca, Sebastian Lopez Valiente, Sebastian Bilbao, María Guillermina Moran, Karen D. Bartolome, Julián Alberto Pratt, Scott L. Long, Nathan M. Bos taurus Ganado Bovino Sincronización del Celo Inseminación Artificial Vacas de Cría Cattle Oestrus Synchronization Artificial Insemination Estradiol Suckler Cows Two experiments were conducted to compare, follicle diameter (FD) on Day −1, corpus luteum (CL) area on Day 7, progesterone (P4) concentration on Day 7 and 18, pregnancy per timed artificial insemination (TAI) on Day 30, and pregnancy loss (PL) between Days 30 and 60 after TAI (TAI, Day 0) using two different synchronization protocols. In Experiment 1, Angus cows (n = 1148) were randomly assigned to either 7-d progesterone CO-Synch (7-d CO-Synch) or 8-d progesterone + estradiol (8-d P + ES) synchronization protocols for TAI. On Day −10, cows in the 7-d CO-Synch treatment group (n = 574) received a progesterone-releasing intravaginal device (PIVD; 0.5 g P4) and GnRH (0.105 mg), on Day −3 the PIVD was removed and cows received cloprostenol (0.150 mg), then, on Day 0 (64 h after PIVD removal), cows received GnRH (0.105 mg) and were TAI. On Day −10, cows in the 8-d P + ES treatment group (n = 574) received a PIVD (0.5 g P4) and estradiol benzoate (2.0 mg), on Day −2 the PIVD was removed, and cows received cloprostenol (0.150 mg) and estradiol cypionate (0.5 mg), then, on Day 0 (48 h after PIVD removal), cows were TAI. Pregnancy per TAI was determined on Days 30 and 60. In a subset of cows (7-d CO-Synch, n = 41; 8-d P + ES, n = 40), serum P4 concentration was evaluated on Day 18. In Experiment 2, anestrus (n = 34) and cyclic (n = 34) suckled beef cows were selected and submitted at random on Day −10, to either 7-d CO-Synch or 8-d P + ES treatment groups. Follicle diameter on Day −1, CL area, and serum P4 concentration on Day 7 were determined. In Experiment 1, pregnancy per TAI on Day 30 did not differ (7-d CO-Synch = 48.9%; 8-d P + ES = 45.6%) between treatments but it was greater for cows with BCS ≥5 (P < 0.01). Pregnancy loss between Days 30 and 60 did not differ between treatment groups but tended to be greater in cows with BCS <5.0 (P < 0.1). In a subset of cows, serum P4 concentration on Day 18 did not differ between treatment groups but tended to be lower (P < 0.1) in cows that had PL between Days 30 and 60 compared to cows that had no PL. In Experiment 2, FD tended to be greater (P < 0.1) and CL area was greater (P = 0.05) in anestrus cows from 7-d CO-Synch treatment. In cyclic cows, the treatment did not affect the FD or CL area. In conclusion, there was no difference in pregnancy per TAI on Day 30 and PL between Days 30 and 60 between cows using 7-d CO-Synch + PIVD or 8-d estradiol-based + PIVD protocols for estrus synchronization and TAI. EEA Cuenca del Salado Fil: Rodriguez, Alejandro Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cuenca del Salado; Argentina Fil: Maresca, Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cuenca del Salado; Argentina Fil: Lopez Valiente, Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cuenca del Salado; Argentina Fil: Bilbao, Guillermina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Bilbao, Guillermina. Universidad Nacional de La Pampa. Facultad de Ciencias Veterinarias; Argentina Fil: Moran, Karen D. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Moran, Karen D. Universidad Nacional de La Pampa. Facultad de Ciencias Veterinarias; Argentina Fil: Bartolome, Julian. Universidad Nacional de La Pampa. Facultad de Ciencias Veterinarias; Argentina Fil: Pratt, Scott L. Clemson University. Department of Animal and Veterinary Sciences; Estados Unidos Fil: Long, Nathan M. Clemson University. Department of Animal and Veterinary Sciences; Estados Unidos 2023-03-14T17:18:12Z 2023-03-14T17:18:12Z 2023-04 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/14227 https://www.sciencedirect.com/science/article/abs/pii/S0093691X23000407 0093-691X 1879-3231 https://doi.org/10.1016/j.theriogenology.2023.02.003 eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Elsevier Theriogenology 200 : 70-76 (April 2023) |
| spellingShingle | Bos taurus Ganado Bovino Sincronización del Celo Inseminación Artificial Vacas de Cría Cattle Oestrus Synchronization Artificial Insemination Estradiol Suckler Cows Rodriguez, Alejandro Martin Maresca, Sebastian Lopez Valiente, Sebastian Bilbao, María Guillermina Moran, Karen D. Bartolome, Julián Alberto Pratt, Scott L. Long, Nathan M. Comparison of the 7-day CO-Synch and 8-day estradiol-based protocols for estrus synchronization and timed artificial insemination in suckled Bos taurus cows |
| title | Comparison of the 7-day CO-Synch and 8-day estradiol-based protocols for estrus synchronization and timed artificial insemination in suckled Bos taurus cows |
| title_full | Comparison of the 7-day CO-Synch and 8-day estradiol-based protocols for estrus synchronization and timed artificial insemination in suckled Bos taurus cows |
| title_fullStr | Comparison of the 7-day CO-Synch and 8-day estradiol-based protocols for estrus synchronization and timed artificial insemination in suckled Bos taurus cows |
| title_full_unstemmed | Comparison of the 7-day CO-Synch and 8-day estradiol-based protocols for estrus synchronization and timed artificial insemination in suckled Bos taurus cows |
| title_short | Comparison of the 7-day CO-Synch and 8-day estradiol-based protocols for estrus synchronization and timed artificial insemination in suckled Bos taurus cows |
| title_sort | comparison of the 7 day co synch and 8 day estradiol based protocols for estrus synchronization and timed artificial insemination in suckled bos taurus cows |
| topic | Bos taurus Ganado Bovino Sincronización del Celo Inseminación Artificial Vacas de Cría Cattle Oestrus Synchronization Artificial Insemination Estradiol Suckler Cows |
| url | http://hdl.handle.net/20.500.12123/14227 https://www.sciencedirect.com/science/article/abs/pii/S0093691X23000407 https://doi.org/10.1016/j.theriogenology.2023.02.003 |
| work_keys_str_mv | AT rodriguezalejandromartin comparisonofthe7daycosynchand8dayestradiolbasedprotocolsforestrussynchronizationandtimedartificialinseminationinsuckledbostauruscows AT marescasebastian comparisonofthe7daycosynchand8dayestradiolbasedprotocolsforestrussynchronizationandtimedartificialinseminationinsuckledbostauruscows AT lopezvalientesebastian comparisonofthe7daycosynchand8dayestradiolbasedprotocolsforestrussynchronizationandtimedartificialinseminationinsuckledbostauruscows AT bilbaomariaguillermina comparisonofthe7daycosynchand8dayestradiolbasedprotocolsforestrussynchronizationandtimedartificialinseminationinsuckledbostauruscows AT morankarend comparisonofthe7daycosynchand8dayestradiolbasedprotocolsforestrussynchronizationandtimedartificialinseminationinsuckledbostauruscows AT bartolomejulianalberto comparisonofthe7daycosynchand8dayestradiolbasedprotocolsforestrussynchronizationandtimedartificialinseminationinsuckledbostauruscows AT prattscottl comparisonofthe7daycosynchand8dayestradiolbasedprotocolsforestrussynchronizationandtimedartificialinseminationinsuckledbostauruscows AT longnathanm comparisonofthe7daycosynchand8dayestradiolbasedprotocolsforestrussynchronizationandtimedartificialinseminationinsuckledbostauruscows |