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. 2022 Mar 4;12(5):652.
doi: 10.3390/ani12050652.

Sperm Gone Smart: A Portable Device (iSperm®) to Assess Semen Concentration and Motility in Dogs

Affiliations

Sperm Gone Smart: A Portable Device (iSperm®) to Assess Semen Concentration and Motility in Dogs

Guillaume Domain et al. Animals (Basel). .

Abstract

The iSperm® is a portable device for semen analysis. This study aimed to investigate its correlation with a conventional computer-assisted sperm analyzer (ISAS®v1) for the assessment of semen concentration and kinematic parameters in dogs (n = 224). The intra-assay variability of both devices and their ability to estimate semen concentration at a fixed value of 40 × 106/mL were also investigated. Results showed that the intra-assay variability was lower for the ISAS®v1 for all parameters compared to the iSperm®. Hence, iSperm® estimates were more variable in-between fields. Both the iSperm® and the ISAS®v1 were not reliable in estimating semen concentration (ISAS®v1: median 30 × 106/mL, interquartile range (IQR) 12, p < 0.01; iSperm®: median 35.12 × 106/mL, IQR 11.11, p < 0.01). Finally, positive correlations were found between both devices with stronger correlations obtained when four fields were analyzed by the iSperm®. However, the low number of spermatozoa analyzed per field and the inability to avoid artifacts are downsides that currently limit the reliability of the iSperm®. Therefore, the software of iSperm® needs some improvement to make it a valid and practical alternative to automated computerized systems for the analysis of canine semen.

Keywords: automated device; canine; semen analysis.

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Conflict of interest statement

The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.

Figures

Figure 1
Figure 1
Box plots representing semen concentration measurements by ISAS®v1 and iSperm®in comparison to the set concentration of 40 × 106/mL. The small circles represent outlier values.
Figure 2
Figure 2
Correlation trends concerning the estimation of semen concentration on ISAS®v1 and iSperm®. The four lines resulted from the comparison of the average of the four fields analyzed by ISAS®v1 and different number of fields analyzed by iSperm® (one, two, three or four fields). a Average of four frames.
Figure 3
Figure 3
Linear regressions for total motility (A) and progressive motility (B) between the ISAS®v1 and the iSperm® based on the average of four fields captured by both devices.

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