<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The aim of the present study was to analyse sexual activity levels of two purebred boars (pietrain and Duroc) in comparison with two-breed hybrid boars (Duroc♀ × Pietrain♂ and Pietrain♀ × × Duroc♂) and to assess the relationship between the ejaculate parameters and the sexual activity of the animals. the experimental material was constituted by 20 boars. sexual activity measurements were performed in 4 different collection periods for each boar. The first libido analysis was carried out during the first week of insemination use, followed by the next analyses after 3, 6 and 9 months of service. In parallel to the sexual activity analyses, ejaculates were collected to investigate ejaculatory efficiency, physical characteristics of the ejaculates and sperm morphology. It has been shown that the characteristics of sexual activity parameters are affected by the breed of the boar and the crossbreeding variant. Two-breed sires are quicker to leap onto the phantom as compared with purebred boars. Duroc♀ × Pietrain♂ boars are characterized by a short period of time between phantom mounting and ejaculation initiation. On the other hand, they yield ejaculates for a much longer time than hybrid Pietrain♀ × Duroc♂ boars and purebred Duroc and Pietrain boars. Hybrid boar ejaculates contain more spermatozoa and can provide more inseminationdoses than ejaculates of purebred boars. Ejaculate parameters are chiefly correlated with ejaculation time and copulation duration. In our study the ejaculate parameters (ejaculate volume, sperm concentration and sperm motility) in purebred boars mainly depended on ejaculation time and total copulation duration, whereas in two-breed hybrids they were more affected by the length of the period between phantom mounting and the start of ejaculation.</p></abstract>

The aim of the present study was to analyse sexual activity levels of two purebred boars (pietrain and Duroc) in comparison with two-breed hybrid boars (Duroc♀ × Pietrain♂ and Pietrain♀ × × Duroc♂) and to assess the relationship between the ejaculate parameters and the sexual activity of the animals. the experimental material was constituted by 20 boars. sexual activity measurements were performed in 4 different collection periods for each boar. The first libido analysis was carried out during the first week of insemination use, followed by the next analyses after 3, 6 and 9 months of service. In parallel to the sexual activity analyses, ejaculates were collected to investigate ejaculatory efficiency, physical characteristics of the ejaculates and sperm morphology. It has been shown that the characteristics of sexual activity parameters are affected by the breed of the boar and the crossbreeding variant. Two-breed sires are quicker to leap onto the phantom as compared with purebred boars. Duroc♀ × Pietrain♂ boars are characterized by a short period of time between phantom mounting and ejaculation initiation. On the other hand, they yield ejaculates for a much longer time than hybrid Pietrain♀ × Duroc♂ boars and purebred Duroc and Pietrain boars. Hybrid boar ejaculates contain more spermatozoa and can provide more inseminationdoses than ejaculates of purebred boars. Ejaculate parameters are chiefly correlated with ejaculation time and copulation duration. In our study the ejaculate parameters (ejaculate volume, sperm concentration and sperm motility) in purebred boars mainly depended on ejaculation time and total copulation duration, whereas in two-breed hybrids they were more affected by the length of the period between phantom mounting and the start of ejaculation.

Assessment of Sexual Activity Levels and Their Association with Ejaculate Parameters in Two-Breed Hybrids and Purebred Duroc and Pietrain Boars

Department of Animal Reproduction and Hygiene, Siedlce University of Natural Sciences and Humanities, Prusa 14, 08-110 Siedlce, Poland

Annals of Animal Science

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The aim of the present study was to analyse sexual activity levels of two purebred boars (pietrain and Duroc) in comparison with two-breed hybrid boars (Duroc♀...

Assessment of Sexual Activity Levels and Their Association with Ejaculate Parameters in Two-Breed Hybrids and Purebred Duroc and Pietrain Boars

Published Online: Jul 29, 2014

Page range: 559 - 571

Received: Nov 14, 2013

Accepted: Mar 04, 2014

DOI: https://doi.org/10.2478/aoas-2014-0030

Keywords
pigs, boars, libido, semen

© 2014 Anna Wysokiñsk and Stanisław Kondracki

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Assessment of Sexual Activity Levels and Their Association with Ejaculate Parameters in Two-Breed Hybrids and Purebred Duroc and Pietrain Boars

Published Online: Jul 29, 2014

Page range: 559 - 571

Received: Nov 14, 2013

Accepted: Mar 04, 2014

DOI: https://doi.org/10.2478/aoas-2014-0030

Keywordspigs, boars, libido, semen

© 2014 Anna Wysokiñsk and Stanisław Kondracki

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
pigs, boars, libido, semen