Evaluación reproductiva y costos en programas de empadre estacional con Bos indicus en trópico mexicano

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dc.date2021-04-21
dc.date.accessioned2022-12-15T14:43:33Z
dc.date.available2022-12-15T14:43:33Z
dc.identifierhttps://revistamvz.unicordoba.edu.co/article/view/e2130
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5353441
dc.descriptionObjective. To compare the reproductive performance of postpartum and open Bos indicus cows and to study the cost effectiveness of retaining non-pregnant animals after a short breeding season in tropical region of Mexico. Material and Methods. A total of 128 Bos indicus were included, 87 postpartum cows (PP) with ≤90 days after calving and 41 open cows (OC) with >90 days open. The study was divided into three phases: 1) Estrus synchronization followed by FTAI (day 0-10), 2) Estrus detection and AI (day 11-45) and 3) Natural mating (day 46-90). For the first phase, all animals were synchronized and AI at fixed time (day 10). Cows displaying overt signs of estrus (day 11-45) were AI. Open cows during the previous two phases were exposed to the bull. Results. Pregnancy in phase 1 was different (p<0.01) for PP and OC groups, 58.6% and 34.1%, respectively. Overall pregnancy percentage over the second service was 42.5% (p>0.05). No differences (p>0.05) were observed at phase 3, average 44.2%. By the end of the breeding season, the cost of OC, was 3 times more than PP cows. Conclusions. Pregnancy rate at first phase was higher in PP cows than OC cows. At the end of breeding season, a pregnancy rate of 80% was found. Incorporation of open cows from previous breeding season was more expensive than PP cows in all phases of the breeding program. Retaining an open cow for rebreeding one year or more could not be economically feasible.en-US
dc.descriptionObjetivo. Comparar el desempeño reproductivo de vacas Bos indicus posparto y abiertas, así como evaluar el costo de retener vacas vacías al final de una temporada de empadre en el trópico mexicano. Material y métodos. Se incluyeron 128 vacas Bos indicus, 87 vacas posparto (PP) con ≤90 días posparto y 41 vacas abiertas (OC) con >90 días abiertos. El estudio se dividió en tres fases: 1) Sincronización de celos (día 0-10) e inseminación a tiempo fijo (FTAI), 2) Detección de celos e IA (día 11-45) y 3) Monta natural (día 46-90). Para la primera fase, todos los animales fueron sincronizados inseminados FTAI (día 10). Las vacas que mostraban signos de estro (día 11-45) fueron inseminadas (IA). Las vacas abiertas durante las dos fases anteriores fueron expuestas al toro. Resultados. La tasa de gestación en la fase 1 fue 58.6 y 34.1% (p<0.01), para PP y OC, respectivamente. Durante la fase 2, el porcentaje de gestación fue 42.5% (p>0.05), mientras que en la fase 3, la tasa de preñez fue 44.2% (p>0.05). El costo de una vaca OC fue tres veces más que las vacas PP. Conclusiones. La tasa de preñez durante la primera etapa, de la estación reproductiva, fue mayor para vacas PP que vacas OC. Al final de la estación reproductiva la tasa de gestación fue 80 %. El costo beneficio de retener animales no preñados después de una corta temporada de empadre no es económicamente factible para una unidad de producción vaca-becerro.es-ES
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dc.languagespa
dc.languageeng
dc.publisherUniversidad de Córdobaes-ES
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e2130/2980
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e2130/2981
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dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e2130/2986
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e2130/2987
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dc.rightsDerechos de autor 2021 José Francisco Martínez-Albarrán, Carlos Salvador Galina-Hidalgo, Ivette Rubio-Gutiérrez, Wendy Leticia Balam-Villarreal, Manuel D. Corro-Moraleses-ES
dc.sourceJournal MVZ Cordoba; Vol. 26 No. 2 (2021): Revista MVZ Córdoba Volumen 26(2) Mayo-Agosto 2021; e2130en-US
dc.sourceRevista MVZ Córdoba; Vol. 26 Núm. 2 (2021): Revista MVZ Córdoba Volumen 26(2) Mayo-Agosto 2021; e2130es-ES
dc.source1909-0544
dc.source0122-0268
dc.source10.21897/rmvz.v26.n2.2021
dc.subjectArtificial inseminationen-US
dc.subjectBos indicusen-US
dc.subjectcost analysisen-US
dc.subjectpostpartumen-US
dc.subjectAnálisis de costoses-ES
dc.subjectBos indicuses-ES
dc.subjectinseminación artificiales-ES
dc.subjectpospartoes-ES
dc.titleReproductive and cost assessment of a seasonal breeding program with Bos indicus in tropical Mexicoen-US
dc.titleEvaluación reproductiva y costos en programas de empadre estacional con Bos indicus en trópico mexicanoes-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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