Follicular and luteal morphometry, progesterone concentration and early gestation in Holstein cows (Bos Taurus) at high altitude in the tropics (Colombia)

Morfometría folicular y luteal, concentración de progesterona y éxito de la gestación en vacas Holstein (Bos Taurus) en el trópico alto (Colombia)

dc.creatorMonroy G, Marbel
dc.creatorJiménez E, Claudia
dc.creatorHernández V, Aureliano
dc.date2018-05-01
dc.date.accessioned2022-12-15T14:43:00Z
dc.date.available2022-12-15T14:43:00Z
dc.identifierhttps://revistamvz.unicordoba.edu.co/article/view/1342
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5353284
dc.descriptionObjectives: The aim of this study is to evaluate the relationship among ovulatory follicle (OF) size, corpus luteum (CL) volume, and progesterone (P4) serum levels with pregnancy success. Materials and methods: Nineteen Holstein cows located in Bogotá, Colombia with a history of 2 to 6 previous calving were used in the study. Following 40 day postpartum, two consecutive phases were evaluated as follows: 1) estrous cycle; 2) early pregnancy or return to estrus after Artificial Insemination (AI). Ultrasound exam was performed twice daily after first sign of estrus to evaluate OF diameter and CL volume, and serum P4 levels were evaluated on days 6, 9, 12 and 15 after ovulation. Cows were inseminated 12 hours post estrus signs and pregnancy was diagnosed 30 days post AI. Results: 47.36% of the cows were diagnosed as pregnant after AI. Pregnant cows had smaller OF diameters (17.85±2.39 mm) than non-pregnant female (21.10±2.86 mm) (p<0.05). Cows with smaller OF were more likely to become pregnant (OR=0.624, IC=95% (0.4-0.9) (p<0.05). There were no significant differences in the CL volume (p=0.10) and P4 serum values (p=0.39) between pregnant and no pregnant cows on days 6, 9, 12 and 15 post ovulation. Serum P4 levels were not correlated to CL size and reproductive status. Conclusions. This study shows that there was not significant difference in serum P4 levels and the CL volume when comparing pregnant with non-pregnant cows. A relationship was found between the OF diameter and the CL volume. Small OF diameter was a factor associated with early pregnancy.en-US
dc.descriptionObjetivo. Evaluar la relación entre el diámetro del folículo ovulatorio (FO), el volumen del cuerpo lúteo (CL), los niveles séricos de progesterona (P4) con el éxito de la gestación. Materiales y métodos. En 19 vacas Holstein de 2 a 6 partos ubicadas en Bogotá, se evaluaron dos fases consecutivas a partir del día 40 postparto, la primera correspondió al ciclo estral y la segunda correspondió a la gestación temprana o repetición de celo. En cada fase se detectó el celo, se realizó ultrasonografía para evaluar el diámetro del FO, confirmar ovulación, y el volumen del CL los días 6, 9, 12 y 15; en estos días también se evaluó los niveles séricos de P4. En la segunda fase se realizó inseminación artificial (IA) y se diagnosticó la gestación 30 días post-IA. Resultados. El 47.36% de las vacas se diagnosticaron como gestantes y el 52.63% como no gestantes. Las gestantes presentaron diámetros de FO menores 17.85±2.39 mm al de las no gestantes (21.10±2.86 mm; p<0.05). Las vacas que presentaron diámetros de FO más pequeños tuvieron mayor posibilidad de quedar gestantes (OR=0.624, IC=95% (0.4-0.9) (p<0.05). Los animales gestantes y no gestantes presentaron similares volúmenes de CL (p=0.10) y niveles séricos de P4 (p=0.39) los días 6, 9, 12 y 15. Conclusiones. Se estableció una relación entre la probabilidad de gestación y el tamaño del FO. Vacas con FO de menor diámetro tuvieron mayor probabilidad de gestación. Otras variables como CL y niveles de P4 no fueron predictivos del éxito de la gestación.es-ES
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dc.languagespa
dc.publisherUniversidad de Córdobaes-ES
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/1342/pdf
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/1342/epub
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/1342/html
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/1342/2497
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dc.sourceJournal MVZ Cordoba; Vol. 23 No. 2 (2018): Revista MVZ Córdoba Volumen 23(2) Mayo-Agosto 2018; 6681-6695en-US
dc.sourceRevista MVZ Córdoba; Vol. 23 Núm. 2 (2018): Revista MVZ Córdoba Volumen 23(2) Mayo-Agosto 2018; 6681-6695es-ES
dc.source1909-0544
dc.source0122-0268
dc.subjectPostpartumen-US
dc.subjectestrous cycleen-US
dc.subjectpregnancyen-US
dc.subjectovaryen-US
dc.subjectreproductionen-US
dc.subjectfollicular dynamics.en-US
dc.subjectPostpartoes-ES
dc.subjectciclo estrales-ES
dc.subjectpreñezes-ES
dc.subjectovarioes-ES
dc.subjectreproducciónes-ES
dc.subjectdinámica folicular.es-ES
dc.titleFollicular and luteal morphometry, progesterone concentration and early gestation in Holstein cows (Bos Taurus) at high altitude in the tropics (Colombia)en-US
dc.titleMorfometría folicular y luteal, concentración de progesterona y éxito de la gestación en vacas Holstein (Bos Taurus) en el trópico alto (Colombia)es-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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