Morphometric parameters of the breast parenchyma of non-pregnant women, after childbirth and with mastitis of pigs

 The aim of the research was to study the morphometric parameters of the epithelial component of the breast of non-pregnant women, after childbirth and with mastitis in pigs. The research was conducted of the Stavropol Territory. The object of research was clinically healthy large white breed pigs of various functional states-non-pregnant, after childbirth and with signs of mastitis. All individuals were pigs of the corresponding species, 3 individuals  in each group. It was found that the area of ducts in the mammary gland in  pigs of a large white breed varies depending on their functional state. The minimum value of this indicator was in non-pregnant animals (293.00 µm2), after delivery, the area of the milk ducts increases by 5.45 times and reaches 1597.00 µm2. In mastitis, the average value of the area of the milk duct is significantly higher by 1.93 times (3081.00±651.00 µm2) compared with the data of animals after childbirth. In pigs after delivery, the average value of this indicator was 702.00±79.67 µm2, and with breast inflammation it was significantly less by 2.5 times and amounted to 281.80±65.23 µm2. In pigs, the variability of the parameters of the area of epithelial cells and the area of the nuclei of mammary epithelial cells was revealed, depending on the functional state of their body. In pigs after childbirth, the epithelial cell area increases by 2.34 times compared to non-pregnant animals, and in mastitis it is less by 35.36% than in females after childbirth, but higher by 1.51 times than in non-pregnant pigs. In postpartum pigs, the value of this parameter was significantly greater by 40.25%, and in mastitis, significantly less by 27.96% and did not differ from the data of non-pregnant animals. The average values of the nuclearcytoplasmic ratio in the epithelial cells of the non-lactating breast in pigs compared to the functioning healthy and functioning with injuries differ significantly. The minimum average value of the nuclear-cytoplasmic ratio of epithelial cells of the mammary ducts is observed in pigs after childbirth, the maximum - in non-pregnant pigs. In pigs, the average values of the area of galactocytes and their nuclei in mastitis are less than after childbirth. 

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