Dependence of Sperm Morphology and Ejaculate Characteristics on Sperm Concentration in the Ejaculates of Hypor Boars.
TL;DR: The dimensions and shape of sperm depend on the sperm concentration in the ejaculate, and in ejaculates with the highest concentrations, the sperm have larger dimensions.
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Abstract: Introduction Determination of sperm concentration and morphology in ejaculate is essential in evaluating fertility. Sperm shape and dimensions may depend on their concentration in ejaculate. The aim of the study was to evaluate the dependence of Hypor boar morphological and morphometric sperm characteristics on concentration in ejaculate. Material and methods The study was conducted on 120 ejaculates from 12 Hypor boars. Depending on sperm concentration, they were put into three groups: low, medium, and high. Ejaculate sperm concentration was determined with the photometric method. Slides were prepared from semen samples which were evaluated for the morphology of spermatozoa. The preparations for morphological analyses were by the eosin-gentian staining method. Results As the sperm concentration in the ejaculate increased, the length, perimeter, and area of the sperm heads also did. In the ejaculates with higher sperm concentration the sperm heads were rounder. The ratios of head dimensions to tail length or total length were the highest in the sperm from ejaculates with the highest concentrations. The highest percentage of morphologically abnormal sperm was noted in ejaculates with low concentrations. Conclusion The dimensions and shape of sperm depend on the sperm concentration in the ejaculate. In ejaculates with the highest concentrations, the sperm have larger dimensions. Sperm concentration affects the frequency of morphological anomalies in the spermatozoa.
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Citations
Predictive Capacity of Boar Sperm Morphometry and Morphometric Sub-Populations on Reproductive Success after Artificial Insemination.
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TL;DR: In this article, the authors compared the morphometric features of sperm head size and shape from the Pietrain line and the Duroc × Pietrain boar crossbred terminal lines, and evaluated their relationship with reproductive success after artificial insemination of sows produced from crossbreeding the York, Landrace and Pietrain breeds.
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Patrícia da Cunha Sousa,E.A.A. Santos,A.L.P. Souza,Gabriela Liberalino Lima,F. F. P. C. Barros,Moacir Franco de Oliveira,Alexandre Rodrigues Silva +6 more
TL;DR: The tail occupies the greatest proportion of the sperm which presents a discretely elongated head through morphometric evaluation, and the use of the Bengal Rose stain is recommended for the morphologic evaluation of the collared peccary sperm.
Effects of season on semen parameters and relationships between selected semen characteristics in Hypor boars
TL;DR: This paper aims to provide a history of Poland's response to the Second World War, and some of the factors that led to the country's post-war depression.
Association of Ejaculate Sperm Counts with their Morphological and Morphometric Characteristics in Hypor Boars
TL;DR: The ejaculate sperm count was found to affect the morphometric characteristics of spermatozoa from boars, and the fewest insemination doses can be prepared from these ejaculates with the lowest sperm count.
Structure of mammalian spermatozoa in respect to viability, fertility and cryopreservation.
Sandra Pesch,Martin Bergmann +1 more
TL;DR: An overview about the detailed structure of physiological mammalian spermatozoa as well as the most common morphological deviations in correlation to fertility are given.