{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,29]],"date-time":"2026-08-29T17:06:09Z","timestamp":1788023169503,"version":"build-2784847793"},"reference-count":84,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2021,6,28]],"date-time":"2021-06-28T00:00:00Z","timestamp":1624838400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Fundaci\u00f3n para el Fomento y Promoci\u00f3n de la Investigaci\u00f3n y Transferencia de Tecnolog\u00eda Agropecuaria de Costa Rica","award":["F23-19"],"award-info":[{"award-number":["F23-19"]}]},{"name":"Vicerrector\u00eda de investigaci\u00f3n y Extensi\u00f3n, Instituto Tecnol\u00f3gico de Costa Rica","award":["VIE-5402-2151-1015"],"award-info":[{"award-number":["VIE-5402-2151-1015"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biology"],"abstract":"<jats:p>The aim was to determine the relationship between kinematic parameters of boar spermatozoa and fertility rates of sow, as well as to assess the effect of sperm clusters on the fertility capacity of the ejaculate. Semen samples were collected from 11 sexually mature boars. Samples were analyzed by an ISAS\u00aev1 CASA-Mot system for eight kinematic parameters. Ejaculate clusters were characterized using multivariate procedures, such as principal factors (PFs) analysis and clustering methods (the k-means model). Four different ejaculate clusters were identified from two kinematic PFs which involved linear trajectory and velocity. There were differences (p &lt; 0.05) between the sperm kinematic variables by sire line. There was no statistical difference (p &gt; 0.05) between dam lines and ejaculate clusters in fertility variables. The discriminant ability of the different kinematics of sperm variables to predict litter size fertility was analyzed using receiver operating characteristics (ROC) curve analysis. Curvilinear velocity (VCL), average path velocity (VAP), amplitude of lateral head displacement (ALH), and beat-cross frequency (BCF) showed significant, albeit limited, predictive capacity for litter size fertility variables (range: 0.55\u20130.58 area under curve, AUC). The kinematic analysis of the ejaculates in clusters did not have a predictive capacity for litter size variables.<\/jats:p>","DOI":"10.3390\/biology10070595","type":"journal-article","created":{"date-parts":[[2021,6,28]],"date-time":"2021-06-28T11:45:40Z","timestamp":1624880740000},"page":"595","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Relationship between Fertility Traits and Kinematics in Clusters of Boar Ejaculates"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0042-6178","authenticated-orcid":false,"given":"Vinicio","family":"Barquero","sequence":"first","affiliation":[{"name":"Animal Reproduction Laboratory, San Carlos Campus, Costa Rica Institute of Technology, School of Agronomy, Alajuela 223-21002, Costa Rica"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eduardo R. S.","family":"Roldan","sequence":"additional","affiliation":[{"name":"Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales (CSIC), 28006 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9809-2596","authenticated-orcid":false,"given":"Carles","family":"Soler","sequence":"additional","affiliation":[{"name":"Department of Cellular Biology, Functional Biology and Physical Anthropology, University of Valencia, Campus Burjassot, C\/Dr Moliner, 50, 46100 Burjassot, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1778-9672","authenticated-orcid":false,"given":"Bernardo","family":"Vargas-Leit\u00f3n","sequence":"additional","affiliation":[{"name":"Population Medicine Research Program, Veterinary Medicine School, National University of Costa Rica, Heredia 40104, Costa Rica"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francisco","family":"Sevilla","sequence":"additional","affiliation":[{"name":"Animal Reproduction Laboratory, San Carlos Campus, Costa Rica Institute of Technology, School of Agronomy, Alajuela 223-21002, Costa Rica"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marlen","family":"Camacho","sequence":"additional","affiliation":[{"name":"Animal Reproduction Laboratory, San Carlos Campus, Costa Rica Institute of Technology, School of Agronomy, Alajuela 223-21002, Costa Rica"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3191-6965","authenticated-orcid":false,"given":"Anthony","family":"Valverde","sequence":"additional","affiliation":[{"name":"Animal Reproduction Laboratory, San Carlos Campus, Costa Rica Institute of Technology, School of Agronomy, Alajuela 223-21002, Costa Rica"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1346","DOI":"10.1016\/j.theriogenology.2008.06.006","article-title":"Can external quality control improve pig AI efficiency?","volume":"70","author":"Waberski","year":"2008","journal-title":"Theriogenology"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Manafi, E. 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