Morphofunctional features of the skin of domestic pigs (sus scrofa domesticus) under technological stress

Skin is an important organ of mammals. Information about the morphological structure of the skin of domestic pigs is fragmentary. The aim of the work is to study the morphofunctional characteristics of the skin of Poltava Meat Breed boars under the conditions of technological stress, using mathematical methods of analysis.
Research material and methods: the morphofunctional features of 6,5 months old purebred Poltava Meat Breed boars’ skin covering have been researched. The research material was received as a result of control slaughtering the animals that reached 100 kg (16 skin fragments were taken from the middle of the chest side, behind the scapulae). The morphometrical characteristics of skin layers and their components were measured; the results have been processed with the use of mathematical ways of analysis.
The results: most Poltava Meat Breed young boars show well-developed defence mechanisms of their skin covering, represented by the thickness of their skin and epidermis, good genetic constancy of their skin layers’ characteristics, as well as by the active functioning of their oil glands. Some features of the researched animals’ skin structure, such as: particular qualities of their sweat and oil glands, doughy skin, epidermis thickening, show the poor functionality and low efficiency of the skin systems. In the current technological, ecological and climate environment the pigs tend to have problems with several major skin functions (such as thermoregulation), which may lead to the gradual worsening of the animals’ genetically specific selectional value along with their productivity, and so worsen the primary products quality as well.
Conclusion. The boars of Poltava Meat Breed, raised in the environment of technological stress, have specific skin structure features. This fact is essential for developing efficient methods for selectioning, breeding and keeping the swines, which would help obtaining high-quality production and raising the functional capabilities of highly productive animals.

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