Factores ambientales asociados con los días no-productivos de cerdas en el trópico mexicano

Environmental factors associated with lifetime non-productive days of sows in Southeastern Mexico

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dc.date2019-12-19
dc.date.accessioned2022-12-15T14:43:11Z
dc.date.available2022-12-15T14:43:11Z
dc.identifierhttps://revistamvz.unicordoba.edu.co/article/view/e1615
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5353344
dc.descriptionObjectives. To estimate the lifetime non-productive days (NPD), lifetime proportion of NPD (%NPD) and non-productive days per sow per year (NPD/Y), and to determine the effect of herd and sow level factors on the traits here studied in three pig farms in the Mexican tropics. Materials and methods. Data from 6703 sows from three commercial farms were used. The model that described the traits studied comprise the fixed effects of farm, year and season of first farrowing, age at first parity, reasons of removal of sows, year x season interaction and the residual error. Results. The means for lifetime NPD, %NPD and NPD/Y were 64 days, 12.0% and 39.3 days, respectively. All fixed factors had significant effects (p<0.01) on the characteristics evaluated. Sows having their first parity at an old age and sows culled because of reproductive reasons had the highest lifetime NPD. In addition, sows culled at first parity had lower lifetime NPD and higher %NPD than sows culled in subsequent farrowing. Conclusions. The early culling of sows increased the percentage of non-productive days, which in turn is expected to reduce the profit of farms.en-US
dc.descriptionObjetivo. Estimar el número de días no productivos (DNP) de por vida, la proporción de DNP (%DNP) y días no productivos por cerda por año (DNP/Y), y determinar el efecto de factores de hato y cerda sobre las características aquí estudiadas en tres granjas comerciales en el trópico mexicano. Materiales y métodos. Los datos de 6703 cerdas de tres granjas comerciales fueron usados. El modelo que describió las características de interés incluyeron los efectos fijos de granja, año de primer parto, época de primer parto, edad al primer parto, causa de desecho, interacción de año por época y error residual. Resultados. Las medias de DNP de por vida, %DNP y DNP/Y fueron 64 días, 12% y 39.3 días, respectivamente. Todos los factores tuvieron efectos significativos (p<0.01) en todas las características. Las cerdas con primer parto a mayor edad y las eliminadas por razones reproductivas tuvieron más DNP en el hato. Además, las cerdas eliminadas en el primer parto tuvieron menor DNP y mayor %DNP que las cerdas desechadas en partos subsecuentes. Conclusiones. La eliminación temprana de cerdas incrementó la proporción de días no productivos, que a su vez podrían reducir la rentabilidad de las granjas.es-ES
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dc.languagespa
dc.languageeng
dc.publisherUniversidad de Córdobaes-ES
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e1615/2303
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e1615/2304
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e1615/2305
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e1615/2306
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e1615/2307
dc.relationhttps://revistamvz.unicordoba.edu.co/article/view/e1615/2308
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dc.rightsDerechos de autor 2019 Jesús Enrique EK MEX, Erika Abigail Reyes González, Alejandro Alzina López, José Candelario Segura Correaes-ES
dc.sourceJournal MVZ Cordoba; Vol. 25 No. 1 (2020): Journal MVZ Córdoba Volume 24 (1) January-April 2020en-US
dc.sourceRevista MVZ Córdoba; Vol. 25 Núm. 1 (2020): Revista MVZ Córdoba Volumen 25(1) Enero-abril 2020es-ES
dc.source1909-0544
dc.source0122-0268
dc.source10.21897/rmvz.v25i.n1.2020
dc.subjectFarrowingen-US
dc.subjectcullingen-US
dc.subjectproductivityen-US
dc.subjecttropicsen-US
dc.subjectpartoes-ES
dc.subjecteliminaciónes-ES
dc.subjectproductividades-ES
dc.subjectclima trópicales-ES
dc.titleFactores ambientales asociados con los días no-productivos de cerdas en el trópico mexicanoen-US
dc.titleEnvironmental factors associated with lifetime non-productive days of sows in Southeastern Mexicoes-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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