Evaluación comparativa de los parámetros reproductivos entre el método de auto inseminación cervical GEDIS y el tradicional en cerdas multíparas
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J.Selva Andina Anim. Sci.
Abstract
La investigación se realizó en Ecuador, provincia de Tungurahua, cantón Cevallos, se evaluó comparativamente los parámetros reproductivos entre el método de auto inseminación cervical y el tradicional en cerdas multíparas, se utilizó 12 cerdas (hembras híbridas entre el segundo y cuarto parto), dividiéndose en dos grupos de 6 cerdas respectivamente, utilizando el protocolo de inseminación 12h - 24h - 36 h. Se preparó semen fresco con diluyente de larga duración + agua bidestilada, a una concentración de 3 x 10(9) de espermatozoides/mL en volumen total por pajuela de 100 mL. Al momento de la inseminación se determinó la cantidad de reflujo seminal y al aplicar la prueba T de Student con observaciones pareadas en los resultados, estos reportaron estadísticamente una diferencia significativa al 5% entre los métodos evaluados, el valor de T calculado fue 9.50 que es superior al T de tablas al 5% de 2.57. Se determinó el tiempo de duración de cada método, resultados que reportaron similitud entre los dos métodos (15 min). A los 21 días post inseminación se diagnosticó preñez mediante ultrasonido y evaluación del no retorno de celo, resultados que reportaron en los dos métodos el 100% de efectividad. Posteriormente, al momento del parto se evaluó la cantidad de lechones nacidos totales, resultados que al utilizar la prueba T de Student con observaciones pareadas reportaron que estadísticamente no existe diferencia significativa al 5% entre los dos métodos, el valor de T calculado fue 0.14 que es inferior al T de tablas al 5% de 2.57. También se determinó el peso de lechones al nacimiento, reportándose mediante la prueba T de Student con observaciones pareadas que existe estadísticamente una diferencia significativa al 5% entre los métodos evaluados, el valor de T calculado fue de 5.17, que es superior al T de tablas al 5% de 2.57. En cuanto a los costos no existe diferencia considerable.
The research was carried out in Ecuador, in the province of Tungurahua, Cevallos county. A comparison of reproductive parameters between the cervical self insemination method and the traditional one in multiparous sows was performed using 12 sows (hybrid females between the second and fourth calving), dividing In two groups of 6 sows respectively, using the insemination protocol 12h - 24h - 36h. Fresh semen was prepared with long-term diluent + bidistilled water, at a concentration of 3 x 10(9) spermatozoa/mL in total volume per 100 mL straw. At the time of insemination the amount of seminal reflux was determined and when the Student's T test was applied with paired observations in the results, they statistically reported a significant difference at 5% among the evaluated methods, the calculated T value was 9.50 Which is greater than the T of tables at 5% of 2.57. The duration of each method was determined, results that reported similarity between the two methods (15 min). At 21 days post insemination pregnancy was diagnosed by ultrasound and evaluation of no return of heat, results that reported in both methods 100% effectiveness. Subsequently, at the time of delivery, the number of total born piglets was evaluated, using the Student's T-test with paired observations that statistically there was no significant difference at 5% between the two methods, the calculated T value was 0, 14 which is less than the T of tables at 5% of 2.57. We also determined the weight of piglets at birth, reported by Student's t-test with paired observations that there is a statistically significant difference to 5% among the evaluated methods, the calculated T value was 5.17, which is higher than the T Of tables at 5% of 2.57. As for costs there is no considerable difference.
The research was carried out in Ecuador, in the province of Tungurahua, Cevallos county. A comparison of reproductive parameters between the cervical self insemination method and the traditional one in multiparous sows was performed using 12 sows (hybrid females between the second and fourth calving), dividing In two groups of 6 sows respectively, using the insemination protocol 12h - 24h - 36h. Fresh semen was prepared with long-term diluent + bidistilled water, at a concentration of 3 x 10(9) spermatozoa/mL in total volume per 100 mL straw. At the time of insemination the amount of seminal reflux was determined and when the Student's T test was applied with paired observations in the results, they statistically reported a significant difference at 5% among the evaluated methods, the calculated T value was 9.50 Which is greater than the T of tables at 5% of 2.57. The duration of each method was determined, results that reported similarity between the two methods (15 min). At 21 days post insemination pregnancy was diagnosed by ultrasound and evaluation of no return of heat, results that reported in both methods 100% effectiveness. Subsequently, at the time of delivery, the number of total born piglets was evaluated, using the Student's T-test with paired observations that statistically there was no significant difference at 5% between the two methods, the calculated T value was 0, 14 which is less than the T of tables at 5% of 2.57. We also determined the weight of piglets at birth, reported by Student's t-test with paired observations that there is a statistically significant difference to 5% among the evaluated methods, the calculated T value was 5.17, which is higher than the T Of tables at 5% of 2.57. As for costs there is no considerable difference.
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Vol. 4, No. 1