Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationsh
The objective of the study was to evaluate the reproductive condition of mestizo bulls in the dry tropics under conditions of extensive exploitation, analyzing semen quality and other reproductive characteristics associated with fertility. The investigation was carried out between September and Octo...
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| author | Macías Moreira, Yandri Andrés |
| author2 | Zambrano Villacís, Juan José Zambrano Aguayo, Marina Dalila Andrade Yucailla, Verónica Cristina |
| author2_role | author author author |
| author_facet | Macías Moreira, Yandri Andrés Zambrano Villacís, Juan José Zambrano Aguayo, Marina Dalila Andrade Yucailla, Verónica Cristina |
| author_role | author |
| collection | Revista Amazónica. Ciencia y Tecnología |
| dc.creator.none.fl_str_mv | Macías Moreira, Yandri Andrés Zambrano Villacís, Juan José Zambrano Aguayo, Marina Dalila Andrade Yucailla, Verónica Cristina |
| dc.date.none.fl_str_mv | 2020-06-30 |
| dc.format.none.fl_str_mv | application/pdf text/html |
| dc.identifier.none.fl_str_mv | https://revistas.uea.edu.ec/index.php/racyt/article/view/128 10.59410/RACYT-v09n01ep05-0128 |
| dc.language.none.fl_str_mv | spa |
| dc.publisher.none.fl_str_mv | Universidad Estatal Amazónica |
| dc.relation.none.fl_str_mv | https://revistas.uea.edu.ec/index.php/racyt/article/view/128/133 https://revistas.uea.edu.ec/index.php/racyt/article/view/128/293 |
| dc.rights.none.fl_str_mv | Derechos de autor 2020 Revista Amazónica. Ciencia y Tecnología https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
| dc.source.none.fl_str_mv | Revista Amazónica. Ciencia y Tecnología; Vol. 9 No. 1 (2020): Revista Amazónica Ciencia y Tecnología ; 81-93 Revista Amazónica. Ciencia y Tecnología; Vol. 9 Núm. 1 (2020): Revista Amazónica Ciencia y Tecnología ; 81-93 1390-8049 1390-5600 reponame:Revista Amazónica. Ciencia y Tecnología instname:Universidad Estatal Amazónica instacron:UEA |
| dc.subject.none.fl_str_mv | Andrología Circunferencia escrotal Concentración espermática Morfología espermática Semen bovino Andrology Scrotal circumference Sperm concentration Sperm morphology Bovine semen |
| dc.title.none.fl_str_mv | Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationsh Evaluación de toros mestizos en el trópico seco en explotación extensiva como predictor de la relación toro/vaca |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | The objective of the study was to evaluate the reproductive condition of mestizo bulls in the dry tropics under conditions of extensive exploitation, analyzing semen quality and other reproductive characteristics associated with fertility. The investigation was carried out between September and October, in the Rocafuerte canton located in the dry tropical zone of the province of Manabí, Ecuador. Sixty mongrel bulls of different racial crosses and ages were evaluated, under natural riding conditions and without sexual rest, before the exam. Semen samples were obtained by electro ejaculation, with minimal impact on the well-being of bulls. In the evaluation of the primary organs a scrotal circumference of 33,1 cm was observed, the highest range being 39,5 cm and a minimum of 28 cm. It was found that 75 % of bulls are within the parameters for natural riding due to the concentration and sperm normality of good to very good. In addition, 68,33 % had a sperm concentration higher than the minimum standard, it could be established that bulls are riding cows at a 5 % ratio regardless of service capacity. Therefore, the application of the andrological examination is important as a predictor of the bull/cow relationship in natural mounts and to rule out bulls with subfertility problems, improving the reproductive efficiency of the stallion, having a great socioeconomic impact on the livestock sector of the region from the Ecuadorian coast. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | RACYT_7e9e659a4e4a5ec4413e7f95658cd185 |
| identifier_str_mv | 10.59410/RACYT-v09n01ep05-0128 |
| instacron_str | UEA |
| institution | UEA |
| instname_str | Universidad Estatal Amazónica |
| language | spa |
| network_acronym_str | RACYT |
| network_name_str | Revista Amazónica. Ciencia y Tecnología |
| oai_identifier_str | oai:ojs_revista.www.uea.edu.ec:article/128 |
| publishDate | 2020 |
| publisher.none.fl_str_mv | Universidad Estatal Amazónica |
| reponame_str | Revista Amazónica. Ciencia y Tecnología |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | Revista Amazónica. Ciencia y Tecnología - Universidad Estatal Amazónica |
| repository_id_str | |
| rights_invalid_str_mv | Derechos de autor 2020 Revista Amazónica. Ciencia y Tecnología https://creativecommons.org/licenses/by/4.0 |
| spelling | Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationshEvaluación de toros mestizos en el trópico seco en explotación extensiva como predictor de la relación toro/vacaMacías Moreira, Yandri AndrésZambrano Villacís, Juan JoséZambrano Aguayo, Marina DalilaAndrade Yucailla, Verónica CristinaAndrologíaCircunferencia escrotalConcentración espermáticaMorfología espermáticaSemen bovinoAndrologyScrotal circumferenceSperm concentrationSperm morphologyBovine semenThe objective of the study was to evaluate the reproductive condition of mestizo bulls in the dry tropics under conditions of extensive exploitation, analyzing semen quality and other reproductive characteristics associated with fertility. The investigation was carried out between September and October, in the Rocafuerte canton located in the dry tropical zone of the province of Manabí, Ecuador. Sixty mongrel bulls of different racial crosses and ages were evaluated, under natural riding conditions and without sexual rest, before the exam. Semen samples were obtained by electro ejaculation, with minimal impact on the well-being of bulls. In the evaluation of the primary organs a scrotal circumference of 33,1 cm was observed, the highest range being 39,5 cm and a minimum of 28 cm. It was found that 75 % of bulls are within the parameters for natural riding due to the concentration and sperm normality of good to very good. In addition, 68,33 % had a sperm concentration higher than the minimum standard, it could be established that bulls are riding cows at a 5 % ratio regardless of service capacity. Therefore, the application of the andrological examination is important as a predictor of the bull/cow relationship in natural mounts and to rule out bulls with subfertility problems, improving the reproductive efficiency of the stallion, having a great socioeconomic impact on the livestock sector of the region from the Ecuadorian coast.El objetivo del estudio fue evaluar la condición reproductiva de los toros mestizos en el trópico seco en condiciones de explotación extensiva, analizando la calidad del semen y otras características reproductivas asociadas a la fertilidad. La investigación se realizó en los meses de septiembre a octubre del 2018, en el cantón Rocafuerte, ubicado en la zona tropical seca de la provincia de Manabí, Ecuador. Se evaluaron 60 toros mestizos de diferentes cruces raciales y edades, bajo condiciones de monta natural y sin reposo sexual antes del examen. Las muestras de semen se obtuvieron mediante electro eyaculación, con el mínimo impacto sobre el bienestar de los toros. En la evaluación de los órganos primarios se observó una circunferencia escrotal de 33,1 cm, siendo el rango más alto 39,5 cm y una mínima de 28 cm. Se encontró que el 75 % de toros están dentro de los parámetros para monta natural por la concentración y la normalidad espermática de buena a muy buena. Además, el 68,33 % presentó una concentración espermática superior al estándar mínimo, se pudo establecer que los toros están montando las vacas a una relación del 5%, sin tener en cuenta la capacidad de servicio. Por lo que es importante la aplicación del examen andrológico como un predictor de la relación toro/vaca en monta natural y descartar los toros con problemas de subfertilidad, mejorando así la eficiencia reproductiva del semental, teniendo un gran impacto socioeconómico en el sector ganadero de la región del Litoral ecuatoriano.Universidad Estatal Amazónica2020-06-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdftext/htmlhttps://revistas.uea.edu.ec/index.php/racyt/article/view/12810.59410/RACYT-v09n01ep05-0128Revista Amazónica. Ciencia y Tecnología; Vol. 9 No. 1 (2020): Revista Amazónica Ciencia y Tecnología ; 81-93Revista Amazónica. Ciencia y Tecnología; Vol. 9 Núm. 1 (2020): Revista Amazónica Ciencia y Tecnología ; 81-931390-80491390-5600reponame:Revista Amazónica. Ciencia y Tecnologíainstname:Universidad Estatal Amazónicainstacron:UEAspahttps://revistas.uea.edu.ec/index.php/racyt/article/view/128/133https://revistas.uea.edu.ec/index.php/racyt/article/view/128/293Derechos de autor 2020 Revista Amazónica. Ciencia y Tecnologíahttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccess2023-09-19T18:38:45Zoai:ojs_revista.www.uea.edu.ec:article/128Portal de revistashttps://revistas.uea.edu.ec/index.php/racytUniversidad públicahttp://www.uea.edu.ec/https://revistas.uea.edu.ec/index.php/racyt/oaiEcuadoropendoar:2023-09-19T18:38:45falsePortal de revistashttps://revistas.uea.edu.ec/index.php/racytUniversidad públicahttp://www.uea.edu.ec/https://revistas.uea.edu.ec/index.php/racyt/oaiEcuadoropendoar:2023-09-19T18:38:45Revista Amazónica. Ciencia y Tecnología - Universidad Estatal Amazónicafalse |
| spellingShingle | Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationsh Macías Moreira, Yandri Andrés Andrología Circunferencia escrotal Concentración espermática Morfología espermática Semen bovino Andrology Scrotal circumference Sperm concentration Sperm morphology Bovine semen |
| status_str | publishedVersion |
| title | Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationsh |
| title_full | Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationsh |
| title_fullStr | Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationsh |
| title_full_unstemmed | Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationsh |
| title_short | Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationsh |
| title_sort | Evaluation of mongrel sires in the dry tropics under extensive exploitation conditions as a predictor of the bull / cow relationsh |
| topic | Andrología Circunferencia escrotal Concentración espermática Morfología espermática Semen bovino Andrology Scrotal circumference Sperm concentration Sperm morphology Bovine semen |
| url | https://revistas.uea.edu.ec/index.php/racyt/article/view/128 |