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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

(English title: Physiological Journal)

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2026; 72(4): 67-71

AGE-RELATED CHANGES IN BLOOD TESTOSTERONE LEVELS AND TESTICLES FRUCTOSE AND CITRIC ACID CONTENT IN YOUNG BULLS

M.V. Pavlyuk, S.O. Vovk

  1. Institute of Agriculture of the Carpathian Region, National Academy of Agrarian Sciences, Obroshyne, Lviv region, Ukraine
DOI: https://doi.org/10.15407/fz72.04.067


Abstract

The article presents the results of an experimental study of age- related changes in blood testosterone concentration, the weight of the testicles vesicular glands, the volume of their secretion, and the content of fructose and citric acid in young bulls. The study was conducted on bulls of the Podilsky line of the Ukrainian Black-and-White dairy breed aged 1 to 13 months. It was found that blood testosterone concentration increased 18-fold during this period, from 0.3 to 5.5 ng/ml. The weight of the vesicular glands increased from 8.8 to 25.1 g between 4 and 13 months of age, while the volume of their secretion increased from 0.54 to 4.07 ml. During the same period, the concentrations of fructose and citric acid in the vesicular glands secretion increased 13.1 and 7.6-fold, respectively. Age-related correlations were demonstrated between serum testosterone concentration, the vesicular glands weight, the secretory volume, and the content of fructose and citric acid.

Keywords: bulls; age; blood; testicles; seminal vesicles; testosterone; fructose; citric acid

Full text: (PDF, in Ukrainian)

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