The article analyzes the postembryonic organogenesis of the ovaries of Texas quail when using biologically active substances. A set of morphological techniques is used. It was found that the use of probiotic in combination with succinic acid to Texas quail at the age of 5-45 days caused intensive growth and development of their ovaries. Probiotic preparation "Sporovit" and succinic acid do not cause pathological changes in the micromorphological structure of the reproduction organs of quails.
Investigated the histological features of the structure of hepar of one-day-old lambs (ODL) using a complex of morphological techniques. It was found that hepar in ODL is formed by stroma and parenchyma. The stromal elements of the organ are formed by loose lugs of hematopoietic connective tissue, which in turn forms a capsule (2.80-7.23 microns thick), as well as the septa of the lobules, which include the hepar triads and paravasal tissue of efferent blood vessels. As a result of the studies, the prevalence of the stroma in the hematopoietic foci around large afferent blood vessels, especially in the hepar hilus, was revealed. The hepar parenchyma in ODL has structural incompleteness. It is formed by hepar cells and numerous resinusoidal cells located in the subcapsular, peripheral, central zones in the lobus hepatis. Hepar cells located in the subcapsular zone (SZ) have a more optically cleared (OC) cytoplasm, and the practically cleared cytoplasm of the hepatocyte diameter (HD) decreases towards the central zone (CZ). In the hepar parenchyma of the ODL, hematopoiesis foci (HF) are established in each of the lobes, which tend to decrease from the periphery to the center of the lobes. Hemopoetic cells (HC) are located between hepatocytes, densely layering on top of each other, and there are also cells located sparsely between the liver cells (LC). The number of hepatocytes per 1 mm2 of the area of the histological specimen in the left lobe (LL) of the ODL reaches the highest value 5983.79 ± 90.40, in the right lobe (RL) of the liver it is 5358.80 ± 646.60, while in the middle it has a minimum value and reaches 5133.10 ± 205.75.
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