Aim: The study aimed to determine both macroscopic and microscopic changes in the reproductive organs of sterile cows.
Materials and Methods: Careful clinical and gynecological examinations (using histological and histochemical methods) of organs of culled sterile cows, such as ovaries, oviducts, the uterus, pars anterior adenohypophysis, thyroid body, and adrenals, were performed.
Results: It was found that 20% of the examined cows in the farms of the Republic of Bashkortostan had pathology of reproductive organs. Ovarian dysfunction was diagnosed in 31% of sterile cows. Histological and histochemical studies revealed that high atresia of all types of ovarian follicles is associated with hypofunction of the ovaries. This was related to stromal vascular dystrophy and was accompanied by atrophy of thecal endocrine elements, resulting in decrease of endocrine and generative function of ovaries.
Conclusion: Essential elements of the ovarian dysfunction pathogenesis are disorders of the functional system "ovary-pituitary-adrenal-thyroid gland" and the abnormality of utero-ovarian relationships, which differ significantly during hypofunction, in case of follicular cysts, and in case of persistent corpora lutea. This difference in abnormalities of utero-ovarian relationships should be considered when developing diagnostic and treatment methods and determining preventive measures.
The methods used for the research are based on modern techniques of watershed mapping represented by catenas and facies; of the numerical solution of two-dimensional catenas equation of moisture transfer in the unsaturated zone and in the zone of complete water saturation; of the crop productivity calculation, depending on the provision with heat and moisture; and on the classification of the watershed catenas by the natural and climatic indicators of their landscapes. The paper presents a model of the stable watershed functioning, which allows to determine environmentally safe reclamative regimes taking into account the provision of landscapes with heat and moisture. This paper also presents the results of predictive calculations and their verification with the data of field experiments.There was made a detailed classification of watershed catenas and facies of the forest-steppe zone of the Western part of the Republic of Bashkortostan. The method of environmentally appropriate reclamative regimes was developed, and there was determined the dependence of water input on the hydrothermal index and humidity factor.For the catenas of the forest-steppe zone reclamation of eluvial facies of watershed catenas is recommended, the optimal irrigation rate being 60 mm. It's recommended the drainage of superaqual facies with the optimal drainage rate up to q.75 m. As a result, the relative productivity of eluval facies by 1.5 times, that of the transit facies -by 1.29 times and of superaqual -in 3.2 times.
Every year a seasonable snow cover is formed in Russia. The accumulation of snow in urban areas creates the problem of clearing and storage of large amounts of snow. When the snow melts, the entire mass of contaminated substances together with the land runoff enters the surface water bodies. This is the issue of the day for the city of Ufa.The article deals with the problem of environmental pollution resulting from the storage of large amounts of snow masses scavenged from the territory of Ufa every year. The sampling technique was to mark out the sample area 10×10 size from which snow was collected using the envelope method. The snow collected at five points of the sampling area was used to form a composite sample. This sample was used to test for the presence of organic compounds of different classes, volatile chlorinated hydrocarbons, benzapyrene, petroleum products, heavy metals, and inorganic anions. According to the results of the study of snow dumps in Ufa in the years 1998, 2011, 2013 and 2015 it was found that snow masses taken out from the territory of the city of Ufa and stored in unauthorized dumping grounds are characterized by the excess of almost all controlled substances. Snow dumps must be equipped with special treatment facilities, discharges from which to surface water bodies should be controlled.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.