Scrotal Circumference as Selection Criterion for Replacement Rams
To select the rams to become part of the herd, in the group of breeders, the evaluation of reproductive fitness has proven to be an excellent tool; this evaluation consists of a general physical examination, an andrological test and a spermogram. Within the andrological test, the measurement of scro...
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| Format: | Online |
| Language: | spa |
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Universidad Pedagógica y Tecnológica de Colombia
2021
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| Online Access: | https://revistas.uptc.edu.co/index.php/pensamiento_accion/article/view/12583 |
| _version_ | 1801706741130330112 |
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| author | Pabón-Quevedo, Héctor Yezid Pulido-Medellín, Martín Orlando |
| author_facet | Pabón-Quevedo, Héctor Yezid Pulido-Medellín, Martín Orlando |
| author_sort | Pabón-Quevedo, Héctor Yezid |
| collection | OJS |
| description | To select the rams to become part of the herd, in the group of breeders, the evaluation of reproductive fitness has proven to be an excellent tool; this evaluation consists of a general physical examination, an andrological test and a spermogram. Within the andrological test, the measurement of scrotal circumference has been important, because it refers to the testicular size defined in centimeters, which is related to the ability of the testicle to produce sperm and therefore to the fertility of the reproductive male. Its use has spread because it is easy and reliable to measure; it presents significant correlations with morphometric measures, especially with body weight and is a heritable characteristic for future generations; This positive correlation has also been determined with the spermogram, since both semen volume, concentration and sperm quality have a direct relationship with the measurement of scrotal circumference. Finally, when the ram has been valued and is found fit to serve, it is the same ram that demonstrates the result with its service capacity, expressed in riding ability and libido or sexual desire. The evaluation of reproductive aptitude constitutes parameters for an efficient selection, in which factors inherent to the animal must also be considered, such as nutritional factors, environmental aspects, race and endocrine factors, which in one way or another can affect the sexual behavior of the ram. The objective of the present work was to carry out a literature review that allows identifying the usefulness of the andrological test in the ram, emphasizing the measurement of scrotal circumference as an indicator of sperm quality and reproductive efficiency for the selection of sires. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-12583 |
| institution | Revista Pensamiento y Acción |
| language | spa |
| publishDate | 2021 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-125832021-07-12T07:55:57Z Scrotal Circumference as Selection Criterion for Replacement Rams Circunferencia escrotal como criterio de selección para carneros de reemplazo Pabón-Quevedo, Héctor Yezid Pulido-Medellín, Martín Orlando animales de granja genética animal método de evaluación reproducción animal animal genetics animal reproduction evaluation methods farm animals To select the rams to become part of the herd, in the group of breeders, the evaluation of reproductive fitness has proven to be an excellent tool; this evaluation consists of a general physical examination, an andrological test and a spermogram. Within the andrological test, the measurement of scrotal circumference has been important, because it refers to the testicular size defined in centimeters, which is related to the ability of the testicle to produce sperm and therefore to the fertility of the reproductive male. Its use has spread because it is easy and reliable to measure; it presents significant correlations with morphometric measures, especially with body weight and is a heritable characteristic for future generations; This positive correlation has also been determined with the spermogram, since both semen volume, concentration and sperm quality have a direct relationship with the measurement of scrotal circumference. Finally, when the ram has been valued and is found fit to serve, it is the same ram that demonstrates the result with its service capacity, expressed in riding ability and libido or sexual desire. The evaluation of reproductive aptitude constitutes parameters for an efficient selection, in which factors inherent to the animal must also be considered, such as nutritional factors, environmental aspects, race and endocrine factors, which in one way or another can affect the sexual behavior of the ram. The objective of the present work was to carry out a literature review that allows identifying the usefulness of the andrological test in the ram, emphasizing the measurement of scrotal circumference as an indicator of sperm quality and reproductive efficiency for the selection of sires. Resumen Para seleccionar los carneros que entran a formar parte del rebaño, en el grupo de los reproductores, la evaluación de la aptitud reproductiva ha resultado ser una excelente herramienta; esta evaluación consta de un examen físico general, una prueba andrológico y un espermograma. Dentro de la prueba andrológico, la medida de la circunferencia escrotal ha tenido importancia, debido a que hace referencia al tamaño testicular definido en centímetros, la cual está relacionada con la capacidad del testículo para producir espermatozoides y por ende con la fertilidad del macho reproductor. Su uso se ha extendido por ser de fácil y confiable medición; presenta correlaciones significativas con medidas morfométricas especialmente con el peso corporal y es una característica heredable a las futuras generaciones; esta correlación positiva también se ha determinado con el espermograma, debido a que tanto el volumen seminal, concentración y calidad espermática tienen una relación directa con la medida de la circunferencia escrotal. Finalmente, cuando el carnero ha sido valorado y se encuentra apto para servir, es el mismo carnero que demuestra el resultado con su capacidad de servicio, expresada en habilidad para la monta y la libido o deseo sexual. La evaluación de la aptitud reproductiva constituye parámetros para una eficiente selección, en la que se debe tener en cuenta también factores inherentes al animal como son factores nutricionales, aspectos medioambientales, la raza y factores endocrinos, que de una u otra forma pueden afectar la conducta sexual del carnero. El objetivo del presente trabajo fue realizar una revisión de literatura que permita identificar la utilidad de la prueba andrológico en el carnero, haciendo énfasis en la medida de la circunferencia escrotal como indicador de la calidad espermática y de la eficiencia reproductiva para la selección de sementales. Universidad Pedagógica y Tecnológica de Colombia 2021-04-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf application/xml https://revistas.uptc.edu.co/index.php/pensamiento_accion/article/view/12583 10.19053/01201190.n31.2021.12583 Pensamiento y Acción; No. 31 (2021): July-December 2021; 52-73 Pensamiento y Acción; Núm. 31 (2021): Julio-Diciembre 2021; 52-73 2619-3353 0120-1190 spa https://revistas.uptc.edu.co/index.php/pensamiento_accion/article/view/12583/10455 https://revistas.uptc.edu.co/index.php/pensamiento_accion/article/view/12583/10622 Selection for sheep breeders Selección para reproductores ovinos Derechos de autor 2021 Héctor Yezid Pabón-Quevedo, M.Sc., Martín Orlando Pulido-Medellín, M.Sc. |
| spellingShingle | animales de granja genética animal método de evaluación reproducción animal animal genetics animal reproduction evaluation methods farm animals Pabón-Quevedo, Héctor Yezid Pulido-Medellín, Martín Orlando Scrotal Circumference as Selection Criterion for Replacement Rams |
| title | Scrotal Circumference as Selection Criterion for Replacement Rams |
| title_alt | Circunferencia escrotal como criterio de selección para carneros de reemplazo |
| title_full | Scrotal Circumference as Selection Criterion for Replacement Rams |
| title_fullStr | Scrotal Circumference as Selection Criterion for Replacement Rams |
| title_full_unstemmed | Scrotal Circumference as Selection Criterion for Replacement Rams |
| title_short | Scrotal Circumference as Selection Criterion for Replacement Rams |
| title_sort | scrotal circumference as selection criterion for replacement rams |
| topic | animales de granja genética animal método de evaluación reproducción animal animal genetics animal reproduction evaluation methods farm animals |
| topic_facet | animales de granja genética animal método de evaluación reproducción animal animal genetics animal reproduction evaluation methods farm animals |
| url | https://revistas.uptc.edu.co/index.php/pensamiento_accion/article/view/12583 |
| work_keys_str_mv | AT pabonquevedohectoryezid scrotalcircumferenceasselectioncriterionforreplacementrams AT pulidomedellinmartinorlando scrotalcircumferenceasselectioncriterionforreplacementrams AT pabonquevedohectoryezid circunferenciaescrotalcomocriteriodeseleccionparacarnerosdereemplazo AT pulidomedellinmartinorlando circunferenciaescrotalcomocriteriodeseleccionparacarnerosdereemplazo |
