Original Scientific Article
The biopsy of the boar testes using ultrasonographic examination
Laima Liepa * ,
Zigmunds Bruveris ,
Mara Mangale ,
Ilmars Duritis ,
Vita Antane ,
Alberts Auzans

Mac Vet Rev 2014; 37 (1): 69 - 74


Received: 10 October 2013

Received in revised form: 21 November 2013

Accepted: 09 December 2013

Available Online First: 16 December 2013

Published on: 15 March 2014

Correspondence: Laima Liepa, Laima.Liepa@llu.lv


The biopsy of live animal testes is an important clinical manipulation to control spermatogenesis and reproductive system pathologies. The aim was to develop a method of boar testes biopsy using a biopsy gun with ultrasound guidance and to investigate the influence of this procedure on the boar testes parenchyma and quality of ejaculate. The biopsy was carried out in six 8-month-old boars. Fourteen days prior to and 21 days after biopsy, the quality of ejaculate was examined (weight of ejaculate; concentration and motility of spermatozoa) with a seven-day intervals. Ultrasound images of the testes parenchyma were recorded three times: directly before and 15 minutes after the biopsy, then 21 days after the procedure. The testes biopsies of generally anesthetized boars were performed with the biopsy gun for needle biopsy with a 12cm long, disposable 16-gauge needle 1.8mm in diameter (Vitesse) through 1cm skin incision in the depth of 1.2-1.6cm of parenchyma. Fifteen minutes after the biopsy, macroscopic injures of the parenchyma of all the boar testes were not detected in the ultrasound image. Twenty one days after biopsy, the hyperechogenic line 0.1-0.2cm in diameter was seen in the testes parenchyma of six boars in the depth of 1.2-1.6cm. The biopsy of boar testes did not influence the quality of boars ejaculate. The ultrasonographic examination of boar testicles before the biopsy reduced possibilities to traumatize large blood vessels of the testes. A perfect boar testicular biopsy was easy to perform using ultrasonographic examination in the pigsty conditions.

Keywords: boar; testicular biopsy; ultrasonographic examination


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© 2014 Liepa L. This is an open-access article published under the terms of the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


This study was supported by a grant from the Scientific Council of the Ministry of Agriculture of Latvia (project No. 09.1528).

Conflict of Interest Statement

The authors declared that they have no potential conflict of interest with respect to the authorship and/or publication of this article.

Citation Information

Macedonian Veterinary Review. Volume 37, Issue 1, Pages 69-74, p-ISSN 1409-7621, e-ISSN 1857-7415, DOI: 10.14432/j.macvetrev.2013.12.006, 2014