Age-related features of the course and branching of veins in the pelvic cavity of Yorkshire pigs
https://doi.org/10.52419/issn2072-2419.2025.3.340
Abstract
Fundamental knowledge about the reproductive system of animals, in particular, anatomical features of the pelvic cavity of pigs, is of particular importance in the context of reproduction. It is the correct anatomical structure and volume of the pelvic cavity that ensure the normal development and functioning of these organs, creating conditions for successful fertilization, pregnancy and subsequent farrowing. Any abnormalities in the development of the pelvis can directly affect the reproductive potential of an animal. Knowledge of the architecture of the venous bed in the pelvic cavity of pigs is of critical practical importance for veterinary medicine. The aim of the study was to establish the age –related features of the course and branching of some veins of the pelvic cavity of Yorkshire pigs, to determine their morphometric parameters and to explain the relationship between the increase in length and diameter of blood vessels in the prenatal and postnatal periods. In the study of two age groups in fetuses and piglets aged 30 days, a significant increase in the linear and volumetric parameters of venous vessels is a direct consequence of the complex adaptation of the vascular system to the new conditions of postnatal life: a radical change in hemodynamics, rapid somatic growth, an increase in the volume of circulating blood and the need to ensure effective venous return in gravity. The predominance of an increase in diameter over an increase in length in almost all vessels emphasizes that the key adaptive mechanism is precisely the expansion of the vessel's lumen to increase its throughput and capacity. In the study of two age groups of piglets aged 30 and 60 days, there is a slight increase in venous vessel parameters, which indicates not a slowdown in development, but a transition from the stage of acute adaptation to the phase of stable and proportional growth, when the vascular system develops smoothly and synchronously with the whole organism.
About the Authors
M. V. Shchipakin
St. Petersburg State University of Veterinary Medicine
Russian Federation
Russian Federation
Doctor of Veterinary Sciences, Professor, Head of the Department of Animal Anatomy
S. I. Melnikov
St. Petersburg State University of Veterinary Medicine
Russian Federation
Russian Federation
Candidate of Veterinary Sciences, Assistant Professor of the Department of Animal Anatomy
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For citations:
Shchipakin M.V., Melnikov S.I. Age-related features of the course and branching of veins in the pelvic cavity of Yorkshire pigs. International Journal of Veterinary Medicine. 2025;(3):340-348. (In Russ.) https://doi.org/10.52419/issn2072-2419.2025.3.340
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