Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Wysocki J. , Kielska E. , Charuta A. , Janiuk I. , Reymond J. 2008. ANALYSIS OF MEASUREMENTS AND PROPORTION OF LARYNX OF YOUNG AND ADULT INDIVIDUALS OF DOMESTIC CATTLE, EJPAU 11(1), #18.
Available Online: http://www.ejpau.media.pl/volume11/issue1/abs-18.html

ABSTRACT

The studies were conducted on 27 bovine larynges (13 young and 14 adult ones). After staining in 10% formaldehyde solution, anatomical dissection using standard set of surgical equipment was performed. Morphological observations as well as numerical, angular and surface measurements were made. The measurements were made using Multiscan, a system of a computer analysis of pictures. Several basic size parameters and several indicators, calculated on the base of them have been considered. The results were analyzed statistically using t-Student test at the significance level α=0,05.

Statistically significant differences between genders of the studied specimens were stated, as well as in young and in adult ones and almost all of size parameters were greater in male than in female specimens. Among basic size parameters in young animals there were: the thyroid cartilage angle and the size of intercartilaginous part of true glottis. In adult ones there were: the span of the anterior as well as posterior horns of the thyroid cartilage, the superior horn length, the thyroid cartilage length and the arytenoid cartilage width. The influence of age was important in almost all basic size parameters. The analysis of relative parameters (indicators) showed that proportions of the larynx, as well as minor and the adult animals, are determined by sex, not by age.

Conclusion of the research is that a certain sexual dimorphism in cattle larynx is present. It is clearly visible just in young animals, however it transforms during maturation process which could be named “the mutation”, as it is described in humans.

Key words: larynx, cattle, anatomy, measurements, minor, adult.

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Jarosław Wysocki
Vertebrates Morphology Department
of University of Humanities and Sciences in Siedlce, Poland
B. Prusa Str. 14, 08-110 Siedlce, Poland

Ewa Kielska
Vertebrates Morphology Department
of University of Humanities and Sciences in Siedlce, Poland
B. Prusa Str. 14, 08-110 Siedlce, Poland

Anna Charuta
Vertebrates Morphology Department
of University of Humanities and Sciences in Siedlce, Poland
B. Prusa Str. 14, 08-110 Siedlce, Poland
email: anna.charuta@neostrada.pl

Izabela Janiuk
Vertebrates Morphology Department
of University of Humanities and Sciences in Siedlce, Poland
B. Prusa Str. 14, 08-110 Siedlce, Poland

Jerzy Reymond
Department of Maxillofacial Surgery,
Regional Hospital of Radom, Poland
Tochterman Str. 1, 26-600 Radom, Poland

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Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.

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