Reproductive performance evaluation in two indics crosses females categories with conventional protocol and J-Synch
The objective of this study was evaluate the reproductive performance of índics cross cows and heifers with a conventional protocol and prolonged proestrus in a breeding system at Chaco. Were used 264 cows without calf and 236 heifers with body condition 4 to 6 (scale 1-9). On day 0 a device with 0....
| Autores principales: | , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Universidad Nacional del Nordeste
2022
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| Materias: | |
| Acceso en línea: | https://revistas.unne.edu.ar/index.php/vet/article/view/6183 |
| Aporte de: |
| id |
I48-R154-article-6183 |
|---|---|
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ojs |
| institution |
Universidad Nacional del Nordeste |
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I-48 |
| repository_str |
R-154 |
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Revistas UNNE - Universidad Nacional del Noroeste (UNNE) |
| language |
Español |
| format |
Artículo revista |
| topic |
Bovinos Inseminación artificial a tiempo fijo Proestro alargado Porcentaje de preñez Cattle Fixed-time AI Prolonged proestrus Pregnancy rate |
| spellingShingle |
Bovinos Inseminación artificial a tiempo fijo Proestro alargado Porcentaje de preñez Cattle Fixed-time AI Prolonged proestrus Pregnancy rate Navarro, L. M. Yostar, E. J. Capellari, A. Reproductive performance evaluation in two indics crosses females categories with conventional protocol and J-Synch |
| topic_facet |
Bovinos Inseminación artificial a tiempo fijo Proestro alargado Porcentaje de preñez Cattle Fixed-time AI Prolonged proestrus Pregnancy rate |
| author |
Navarro, L. M. Yostar, E. J. Capellari, A. |
| author_facet |
Navarro, L. M. Yostar, E. J. Capellari, A. |
| author_sort |
Navarro, L. M. |
| title |
Reproductive performance evaluation in two indics crosses females categories with conventional protocol and J-Synch |
| title_short |
Reproductive performance evaluation in two indics crosses females categories with conventional protocol and J-Synch |
| title_full |
Reproductive performance evaluation in two indics crosses females categories with conventional protocol and J-Synch |
| title_fullStr |
Reproductive performance evaluation in two indics crosses females categories with conventional protocol and J-Synch |
| title_full_unstemmed |
Reproductive performance evaluation in two indics crosses females categories with conventional protocol and J-Synch |
| title_sort |
reproductive performance evaluation in two indics crosses females categories with conventional protocol and j-synch |
| description |
The objective of this study was evaluate the reproductive performance of índics cross cows and heifers with a conventional protocol and prolonged proestrus in a breeding system at Chaco. Were used 264 cows without calf and 236 heifers with body condition 4 to 6 (scale 1-9). On day 0 a device with 0.5 g of progesterone (DIB) and 2 mg of estradiol benzoate was applied. Animals were randomly distributed into 2 groups: a) conventional: day 8: DIB was withdrawn, D-Cloprostenol (PG) (150μg) and estradiol cypionate (0.5 mg) were administered. Artificial insemination (AI) was performed 48 to 54 hours after withdrawal DIB. b) J-Synch: day 6 DIB was withdrawn, PG (150 μg) and equine chorionic gonadotropin (eCG) (300 or 400 IU) were applied in heifers and cows respectively. The sacro-coccygeal region was painted to determine estrus manifestation, performing AI on the unpainted ones at 60 h and 72 hand in those that were still painted at 72 h in addition to AI buserelin acetate (10 μg) was applied. Ultrasonography diagnosis was made 40 days post-AI. Using Chi 2 test were compared the effect of treatment (conventional vs. J-Synch without eCG) and category (heifer and cow) on the rates of pregnancy and in J-Synch (without vs. with eCG) in addition to estrus manifestation. No association was found between treatments evaluated with reproductive performance with pregnancies of 43% vs 54% in cows and 59% vs 51% in heifers with conventional and J-Synch respectively. In J-Synch of 52 and 56% in cows (54 vs 62%) and heifers (51 vs 50%) without and with eCG respectively. The general pregnancy was 55% in animals that showed estrus and 44% in those that did not. In conclusion, the cows had a tendency to perform better with J-Synch where the use of eCG had no influence on pregnancy. |
| publisher |
Universidad Nacional del Nordeste |
| publishDate |
2022 |
| url |
https://revistas.unne.edu.ar/index.php/vet/article/view/6183 |
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AT navarrolm reproductiveperformanceevaluationintwoindicscrossesfemalescategorieswithconventionalprotocolandjsynch AT yostarej reproductiveperformanceevaluationintwoindicscrossesfemalescategorieswithconventionalprotocolandjsynch AT capellaria reproductiveperformanceevaluationintwoindicscrossesfemalescategorieswithconventionalprotocolandjsynch AT navarrolm evaluaciondeldesempenoreproductivoenvacasyvaquillonascruzaindicaconprotocoloconvencionalyjsynch AT yostarej evaluaciondeldesempenoreproductivoenvacasyvaquillonascruzaindicaconprotocoloconvencionalyjsynch AT capellaria evaluaciondeldesempenoreproductivoenvacasyvaquillonascruzaindicaconprotocoloconvencionalyjsynch |
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2023-03-18T23:06:58Z |
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2024-08-21T22:35:45Z |
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I48-R154-article-61832023-06-21T17:11:22Z Reproductive performance evaluation in two indics crosses females categories with conventional protocol and J-Synch Evaluación del desempeño reproductivo en vacas y vaquillonas cruza índica con protocolo convencional y J-Synch Navarro, L. M. Yostar, E. J. Capellari, A. Bovinos Inseminación artificial a tiempo fijo Proestro alargado Porcentaje de preñez Cattle Fixed-time AI Prolonged proestrus Pregnancy rate The objective of this study was evaluate the reproductive performance of índics cross cows and heifers with a conventional protocol and prolonged proestrus in a breeding system at Chaco. Were used 264 cows without calf and 236 heifers with body condition 4 to 6 (scale 1-9). On day 0 a device with 0.5 g of progesterone (DIB) and 2 mg of estradiol benzoate was applied. Animals were randomly distributed into 2 groups: a) conventional: day 8: DIB was withdrawn, D-Cloprostenol (PG) (150μg) and estradiol cypionate (0.5 mg) were administered. Artificial insemination (AI) was performed 48 to 54 hours after withdrawal DIB. b) J-Synch: day 6 DIB was withdrawn, PG (150 μg) and equine chorionic gonadotropin (eCG) (300 or 400 IU) were applied in heifers and cows respectively. The sacro-coccygeal region was painted to determine estrus manifestation, performing AI on the unpainted ones at 60 h and 72 hand in those that were still painted at 72 h in addition to AI buserelin acetate (10 μg) was applied. Ultrasonography diagnosis was made 40 days post-AI. Using Chi 2 test were compared the effect of treatment (conventional vs. J-Synch without eCG) and category (heifer and cow) on the rates of pregnancy and in J-Synch (without vs. with eCG) in addition to estrus manifestation. No association was found between treatments evaluated with reproductive performance with pregnancies of 43% vs 54% in cows and 59% vs 51% in heifers with conventional and J-Synch respectively. In J-Synch of 52 and 56% in cows (54 vs 62%) and heifers (51 vs 50%) without and with eCG respectively. The general pregnancy was 55% in animals that showed estrus and 44% in those that did not. In conclusion, the cows had a tendency to perform better with J-Synch where the use of eCG had no influence on pregnancy. El objetivo de este estudio fue evaluar el desempeño reproductivo en vacas y vaquillonas cruza índica con protocolo convencional y de proestro alargado, en un sistema de cría de Chaco. Se utilizaron 264 vacas secas y 236 vaquillonas, con condición corporal 4 a 6 (escala 1-9). El día 0 se aplicó dispositivo con 0,5 g de progesterona (DIB) y 2 mg de benzoato de estradiol. Los animales se distribuyeron aleatoriamente en 2 grupos: a) convencional (día 8) se retiró DIB, administrándose D-Cloprostenol (PG) (150 μg) y cipionato de estradiol (0,5 mg). La inseminación artificial (IA) se realizó de 48 a 54 h del retiro, b) J-Synch: día 6 se retiró DIB, aplicándose PG (150 μg) y gonadotrofina coriónica equina (eCG: 300 y 400 UI) en vaquillonas y vacas, respectivamente. Se pintó la región sacrocoxígea para determinar manifestación de celo, inseminando a las 60 h y 72 h a las despintadas y en las que seguían pintadas a las 72 h además de IA se aplicó acetato de buserelina (10μg). El diagnóstico por ultrasonografía se efectuó 40 días post-IA. Mediante prueba Chi 2, 3 se comparó el efecto tratamiento (convencional vs J-Synch sin eCG) y categoría (vaquillona y vaca) sobre el porcentaje de preñez y en J-Synch (sin vs con eCG), además de manifestación de celo. No se encontró asociación de los tratamientos evaluados con el desempeño reproductivo, con preñeces del 43% vs 54% en vacas y en vaquillonas del 59% vs 51% con convencional y J-Synch, respectivamente. En J-Synch de 52 y 56%, en vacas (54 vs 62%) y vaquillonas (51 vs 50%) sin y con eCG, respectivamente. La preñez general fue de 55% en animales que manifestaron celo y 44% en aquellos que no lo hicieron. Como conclusión las vacas tuvieron una tendencia a desempeñarse mejor con J-Synch, donde la utilización de eCG no tuvo influencias sobre la preñez. Universidad Nacional del Nordeste 2022-12-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/vet/article/view/6183 10.30972/vet.3326183 Revista Veterinaria; Vol. 33 Núm. 2 (2022); 208-214 1669-6840 1668-4834 spa https://revistas.unne.edu.ar/index.php/vet/article/view/6183/5854 Derechos de autor 2022 Revista Veterinaria |