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Vertebrate reproductive science and technology
REVIEW

CASA-Mot in mammals: an update

J. L. Yániz A C , M. A. Silvestre B , P. Santolaria A and C. Soler B
+ Author Affiliations
- Author Affiliations

A TECNOGAM Research Group, Environmental Sciences Institute (IUCA), Department of Animal Production and Food Sciences, University of Zaragoza, 22071, Huesca, Spain.

B Department of Cellular Biology, Functional Biology and Physical Anthropology, University of Valencia, 46100, Burjassot, Valencia, Spain.

C Corresponding author. Email: jyaniz@unizar.es

Reproduction, Fertility and Development 30(6) 799-809 https://doi.org/10.1071/RD17432
Submitted: 17 October 2017  Accepted: 19 January 2018   Published: 8 March 2018

Abstract

Sperm motility is one of the most widely used parameters of sperm quality. Computer-aided sperm motility analysis (CASA-Mot) systems were developed to reduce the subjectivity of sperm motility assessment, and have had broad scientific and practical acceptance. In this review, the sources of variation and current applications of this technology and its relationships with other sperm quality tests are described in detail. Despite remarkable advances in the technique, there is still great need for standardisation in many species, and the numerous factors that affect the results make it difficult to provide universally accepted criteria for classifying semen samples based on sperm motility characteristics. The main fields for CASA-Mot include the study of male fertility and pathologies, evaluation of the effects of physical and chemical agents, improvement of epidemiological survey studies, more precise calculation of seminal doses for farm animals, realisation of basic studies about sperm function, improvement of sperm technologies such as cryopreservation and quality control analysis. Numerous relationships have been established between CASA-Mot and other sperm quality tests, although most of these parameters are complementary. Future CASA-Mot systems will probably be able to integrate several sperm quality parameters with motility.

Additional keywords: semen, sperm quality.


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