Please use this identifier to cite or link to this item:
Title: The use of animal's body, scrotal temperature and motion monitoring in evaluating boar semen production capacity
Authors: Stravogianni, Vasiliki
Samaras, Theodoros
Boscos, Constantin M.
Markakis, John
Krystallidou, Evdokia
Basioura, Athina
Tsakmakidis, Ioannis A.
Editors: Bussalleu, Eva
Subjects LC: Swine - Reproduction
Keywords: Sensor signals
Thermal camera
Boar semen
Issue Date: 24-Mar-2022
Publisher: MDPI
Abstract: Biomedical measurements by specialized technological equipment have been used in farm animals to collect information about nutrition, behavior and welfare. This study investigates the relation of semen quality (CASA analysis, viability, morphology, membrane biochemical activity and DNA fragmentation) with boar behavior during ejaculation. Sensors were placed on the boar’s body. Movement features were collected using an inertial measurement unit (IMU), comprising an accelerometer, a gyroscope and a magnetometer. Boar, scrotal and dummy temperatures were measured by an infrared (IR) camera and an IR thermometer, while the face salivation of the boar was recorded by a moisture meter (also based on IR technology). All signals and images were logged on a mobile device (smartphone or tablet) using a Bluetooth connection and then transferred wirelessly to the cloud. The data files were then processed using scripts in MATLAB 2021a (MathWorks, Natick, Massachusetts) to derive the necessary indices. Ninety-four ejaculates from five boars were analyzed in this study. The statistical analysis was performed in the Statistics and Machine Learning Toolbox of MATLAB 2021a using a linear mixed effects model. Significant and strong negative correlations (R2> 0.5,p≤0.05) were observed between boar, dummy and scrotal temperature with the progressive, rapid and slow movement of spermatozoa, VCL (curvilinear velocity), VSL (straight line velocity) and ALH (amplitude of lateral head displacement) kinematics. The volume of the ejaculate was correlated with the scrotal and dummy temperature. Dummy’s temperature was negatively correlated with BCF (beat/cross-frequency), viability and total time of ejaculation, while it was positively correlated with abnormal morphology. Body temperature was negatively correlated with BCF. Positive correlations were noticed between VAP (average path velocity) and total time of ejaculation with body acceleration features, as well as between the overall dynamic body acceleration (ODBA) and total time of ejaculation. In conclusion, the use of biomedical sensors can support the evaluation of boar sperm production capacity, providing valuable information about semen quality.
Description: This article belongs to the special issue of "Modern Technology in Farm Animals' Reproductive Services".
Length: 11 pages
Type: Journal Article
Relation (Part Of): "Animals" journal
Publication Status: Published
Citation: Stravogianni, V, Samaras, T, Boscos, CM, Matrakis, J, Krystallidou, E, Basioura, A, & Tsakmakidis, IA 2022, 'The use of animal's body, scrotal temperature and motion monitoring in evaluating boar semen production capacity', Animals, vol. 12, no.7, pp. 1-11, doi:
Restrictions: Open Access
Attribution 4.0 International
Language: en
Appears in Collections:Journal Articles

Files in This Item:
File Description SizeFormat 
animals-12-00829-v2.pdf1.18 MBAdobe PDFThumbnail

This item is licensed under a Creative Commons License Creative Commons