Browsing by Author "Meneses Hinojosa, Estefanía Belén"

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    Determinación de la calidad espermática de dosis seminales porcinas comercializadas en la provincia de Pichincha
    (Universidad Técncica de Cotopaxi (UTC) Ciencias Agropecuarias y Recursos Naturales. Medicina Veterinaria, 2026-10-20) Meneses Hinojosa, Estefanía Belén; Veloz Veloz, Dina Maricela
    Assessing the quality of commercial porcine semen doses sold in the province of Pichincha is essential to ensuring adequate performance in artificial insemination programs. In this study, 45 commercial semen doses sold in the province of Pichincha were analyzed using a quantitative, descriptive, non-experimental, cross-sectional approach. The temperature upon receipt, volume, pH, and color were recorded; motility and concentration were determined using the CASA system with iSperm technology, while morphology was assessed by methylene blue staining. In addition, a bacteriological analysis was conducted to determine the presence or absence of microbial growth and to identify the isolated genera. The mean temperature was 16.81 °C, the average volume was 94.98 ml, and the mean pH was 7.11. A watery white color predominated in 55.56% of the samples. Total motility averaged 68.99%, concentration was 119.63 million sperm/mL, and normal morphology averaged 87.18%. In the bacteriological analysis, six samples showed bacterial growth; the predominant genus was Enterobacter spp., present in 5 positive samples (83.33%), while Klebsiella spp. was identified in 1 sample (16.67%). Comparison with the reference criteria revealed favorable results for temperature, volume, and morphology, and the average pH fell within the specified range. Motility partially met the technical comparison value, and concentration showed wide variability. In conclusion, the doses did not exhibit uniform quality; therefore, it cannot be stated that all of them met the reference criteria. This lack of uniformity may compromise reproductive efficiency when the doses are used without a prior comprehensive evaluation