Efecto de la adición de oxitocina al semen en la infertilidad estacional de las cerdas
To determine the effect of oxytocin addition to semen on the performance of sows served, during summer-autumn, 223 multi parturient hybrid sows were utilized, assigned to one of two treatments in a completely randomized design. Treatments were: 1) Control (n = 111), sows inseminated with a reduced s...
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Published in | Abanico veterinario Vol. 7; no. 2; pp. 22 - 33 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | Portuguese Spanish |
Published |
01.08.2017
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Subjects | |
Online Access | Get full text |
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Summary: | To determine the effect of oxytocin addition to semen on the performance of sows served, during summer-autumn, 223 multi parturient hybrid sows were utilized, assigned to one of two treatments in a completely randomized design. Treatments were: 1) Control (n = 111), sows inseminated with a reduced semen dosage (1.5 x 109 viable sperms cells in 40 mL of diluent), and 2) Test group (n = 112) Control plus the addition of 4 IU oxytocin to semen before service. Sows were inseminated from June to October 2012, using the technique of post cervical artificial insemination. The total number born piglet (TBP) and total number alive born (TAB) were registered at calving, those who were compared by ANOVA (P < 0.05). The farrowing rate was compared by X2 analyses, using 2 x 2 contingency tables. The addition of oxytocin to semen doses did not change (P > 0.05) litter size (11.03 vs. 10.78 TBP; 9.83 vs. 9.62 TAB). The 4 UI oxytocin addition to semen before service improved (P = 0.03) by 9.07 % the farrowing rate (84.68 vs. 93.75%). It is concluded that the addition of 4 IU of oxytocin to the reduced seminal doses, improves farrowing rate in sows inseminated during the warm season.
Resumen: Para determinar el efecto de la adición de oxitocina al semen en el desempeño reproductivo de las cerdas servidas durante la época de verano-otoño, se utilizaron 223 cerdas multíparas híbridas, asignadas a uno de dos tratamientos en un diseño experimental completamente al azar. Los tratamientos fueron:1) Testigo (n = 111), cerdas inseminadas con dosis seminales reducidas (1.5 x 109 espermatozoides en 40 mL de diluyente), y 2) Grupo de prueba (n = 112), testigo más la adición de 4 UI de oxitocina antes del servicio. Las cerdas fueron inseminadas entre junio y octubre de 2012, usando la técnica de inseminación post-cervical. El número de lechones nacidos totales (LNT) y nacidos vivos (LNV) fueron registrados al parto, a los que se le aplicó un ANDEVA (P < 0.05). La tasa de parto fue comparada por análisis de X2 , utilizando tablas de contingencia 2 x 2. La adición de oxitocina al semen no modificó (P > 0.05) el tamaño de camada (11.03 vs. 10.78 LNT; 9.83 vs. 9.62 LNV). La adición de 4 UI de oxitocina al semen antes de la inseminación mejoró (P = 0.03) en 9.07 % la tasa de parto (84.68 vs. 93.75%). Se concluye que la adición de 4 UI de oxitocina a dosis seminales reducidas mejora la tasa de parto en hembras inseminadas durante la época cálida. |
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ISSN: | 2448-6132 2007-428X |
DOI: | 10.21929/abavet2017.72.2 |