Efecto de la inseminación cervical y post cervical sobre los parámetros reproductivos de marranas large white
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Date
2025
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Universidad Nacional de Trujillo
Abstract
El objetivo de esta investigación fue determinar el efecto de las técnicas de inseminación artificial cervical (IAC) y post cervical (IAPC) sobre los parámetros reproductivos de marranas large white. Se utilizaron 800 marranas de segundo al sexto parto distribuidas en dos tratamientos con 400 marranas por tratamiento. En la IAC se realizaron 2-3 inseminaciones por celo/cerda con dosis de 90 ml conteniendo 3,5 mil millones de espermatozoides; en la IAPC se hicieron 2 inseminaciones por celo/cerda con dosis de 60 ml con 2 mil millones de espermatozoides. Los datos obtenidos fueron evaluados mediante el software libre Rstudio y analizados mediante análisis de varianza (ANOVA) con la prueba T de Student y Chi-cuadrado. Los parámetros reproductivos evaluados y sus resultados para IAC y IAPC fueron: período destete-celo con 6,7 y 5,9 días; porcentaje de fertilidad con 95 y 96% y porcentaje de partos con 90 y 91%, respectivamente; sin diferencias estadísticas, pero si numéricas a favor de IAPC. Los parámetros productivos evaluados y sus resultados fueron número de lechones nacidos totales con 15,1 y 16,1; lechones nacidos vivos con 13,7 y 14,7; lechones destetados con 12,5 y 13,8 y peso de la camada al nacimiento con 17,4 y 19,7 para IAC y IAPC respectivamente para todos con diferencias altamente significativas (P<0.01). Concluyéndose que la IAPC en marranas large white mejora significativamente los parámetros productivos y numéricamente los parámetros reproductivos en las marranas large white con respecto a IAC.
ABSTRACT The objective of this study was to determine the effect of cervical artificial insemination (CAI) and post-cervical artificial insemination (PCAI) on the reproductive parameters of large white sows. Eight hundred sows from second to sixth parity were used, distributed in two treatments with 400 sows per treatment. In the CAI, 2-3 inseminations were performed per sow per heat with a 90 ml dose containing 3.5 billion sperm; in the PCAI, 2 inseminations per sow per heat were performed with a 60 ml dose containing 2 billion sperm. The data obtained were evaluated using the free software Rstudio and analyzed by analysis of variance (ANOVA) with Student's t-test and chi-square test. The reproductive parameters evaluated and their results for CAI and PCAI were: weaning-to-heat period with 6.7 and 5.9 days; Fertility percentages were 95% and 96%, and farrowing percentages were 90% and 91%, respectively; with no statistical differences, but numerical differences were found in favor of IAPC. The productive parameters evaluated and their results were: total number of piglets born: 15.1% and 16.1%; live piglets born: 13.7% and 14.7%; weaned piglets: 12.5% and 13.8%, and litter weight at birth: 17.4% and 19.7% for IAC and IAPC, respectively. The differences were highly significant (P<0.01). It was concluded that IAPC significantly improved productive parameters in large white sows, and numerically, reproductive parameters in large white sows compared to IAC.
ABSTRACT The objective of this study was to determine the effect of cervical artificial insemination (CAI) and post-cervical artificial insemination (PCAI) on the reproductive parameters of large white sows. Eight hundred sows from second to sixth parity were used, distributed in two treatments with 400 sows per treatment. In the CAI, 2-3 inseminations were performed per sow per heat with a 90 ml dose containing 3.5 billion sperm; in the PCAI, 2 inseminations per sow per heat were performed with a 60 ml dose containing 2 billion sperm. The data obtained were evaluated using the free software Rstudio and analyzed by analysis of variance (ANOVA) with Student's t-test and chi-square test. The reproductive parameters evaluated and their results for CAI and PCAI were: weaning-to-heat period with 6.7 and 5.9 days; Fertility percentages were 95% and 96%, and farrowing percentages were 90% and 91%, respectively; with no statistical differences, but numerical differences were found in favor of IAPC. The productive parameters evaluated and their results were: total number of piglets born: 15.1% and 16.1%; live piglets born: 13.7% and 14.7%; weaned piglets: 12.5% and 13.8%, and litter weight at birth: 17.4% and 19.7% for IAC and IAPC, respectively. The differences were highly significant (P<0.01). It was concluded that IAPC significantly improved productive parameters in large white sows, and numerically, reproductive parameters in large white sows compared to IAC.
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Keywords
Inseminación cervical, Inseminación post cervical, Parámetros productivos, Marranas, Large White