Bacteriospermia assessment and its relationship with conventional seminal parameters in stud dogs ejaculates (Canis familiaris)

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Published: Jan 20, 2023
DOI: https://doi.org/10.12681/jhvms.27558
Keywords:
Bacteria Breeding male Colony-forming units Microbiology Reproduction Seminal parameters.
S. Agudelo-Yepes
Grupo Reproducción, Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad de Antioquia -UdeA, Medellín, Colombia
J. Puerta-Suárez
Grupo Reproducción, Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad de Antioquia -UdeA, Medellín, Colombia
D.F. Carrillo-Gonzalez
One Health and Veterinary Innovative Research & Development Group, Escuela de Medicina Veterinaria, Universidad de Antioquia - UdeA, Medellín, Colombia
Walter D Cardona Maya
https://orcid.org/0000-0003-0062-6444
Abstract

The objective of this work was to determine the frequency of bacteriospermia and its effect on the seminal quality in canines. Dogs were divided into two groups according to weight: small dogs between 1 and 10 kg (Group 1) and dogs with more than 10 kg (Group 2). The foreskin was disinfected in each animal (n=15), and the semen sample was collected by the gloved hand method. Sperm motility, morphology, viability, and concentration were evaluated using a 40x microscope. A 10µL of semen drop was cultured by diffusion method on blood agar and MacConkey agar. Colony-forming units (CFU) were quantitatively evaluated, and biochemical identification was carried out after 48 hours at 37°C. Conventional PCR was performed on the semen samples to evaluate the presence/absence of 11 bacteria. Bacterial growth was found in all samples. The CFU/mL in blood agar were 34042.8 for group 1 and 107714.3 for group 2, while on MacConkey agar were 142.9 CFU/mL, and 21328.6 CFU/mL, respectively. Coagulase-negative Staphylococcus was the most frequent bacteria isolated by conventional culture (64.3%), and Staphylococcus aureus and Klebsiella spp. were the most common bacteria found by conventional PCR. Between both groups, only a statistically significant difference was found in normal sperm morphology. A negative correlation was observed between viability and morphology with CFU on MacConkey agar. One dog was ruled out because he had azoospermia. Canine seminal bacteriospermia is quite frequent and could alter its quality. The presence of Gram-negative bacteria is associated with greater alteration in the semen analysis.

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Author Biography
D.F. Carrillo-Gonzalez, One Health and Veterinary Innovative Research & Development Group, Escuela de Medicina Veterinaria, Universidad de Antioquia - UdeA, Medellín, Colombia

Facultad de Ciencias Agropecuarias, Escuela de Zootecnia, Universidad de Sucre, Sincelejo, Colombia

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