Some criteria for lymphatic nodes of heart and lungs during expert evaluation of rabbit products
Rabbit products are subject to mandatory post-slaughter veterinary and sanitary examination, which examines the internal organs, muscles, special attention is paid to the lymphatic nodes. Studies were conducted on the basis of Altai State Agrarian University, Altai State Medical University. The object of the research was regional lymphatic nodes of heart and lungs from 56 clinically healthy rabbits, aged from 0.6 to 1 year old of “White Giant" breed kept in vivarium conditions. Research methods: registration of the animal; eutanasia; autopsy; preparation of lymphatic nodes with description of topography features; morphometry and classification; statistical processing and analysis of the data. Difficulty in visualizing lymphatic nodes is in their anatomical proximity to adipose tissue or thymus. For regional lymph nodes of heart and lungs, we use the concept of “group of lymphatic nodes" - a segment of the lymphoid bed, which consists of the central (largest) and peripheral (cranial and caudal) lymphatic nodes on afferent and efferent lymphatic vessels, as well as lymphatic vessels connecting lymphatic nodes in a single group. The adipose tissue in the chest cavity of the studied animals is white-gray, homogeneous, soft, moist on the cut, and transparent drops of fat are clearly visible on the scrape. The thymus tissue is grayish-cherry in color, with a pronounced lobed structure, soft consistency, moist on the cut. Large lymphatic nodes can be identified by the following criteria: a part of the lymphatic node bulges out above the surface of adipose tissue, has a more grayish or yellowish color and a denser consistency than the surrounding tissue. For visualization of peripheral lymphatic nodes, it is necessary to make several deep cuts of the surrounding tissue and, at the site of the node, on the background of a homogeneous adipose tissue of white or gray or grayish-cherry thymic tissue, roundish-oval formations of grayish-yellow color will be distinguished, i.e. the lymphatic nodes.