Name
Koshchayev Andrey Georgiyevich
Scholastic degree
•
Academic rank
professor
Honorary rank
—
Organization, job position
Kuban State Agrarian University
Web site url
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Articles count: 41
In the work, we have presented the information of elaboration of a manufacturing process of Mycocel feed additive with the cellulolytic activity for poul-try industry. Manufacturing process includes follow-ing steps: stock culture maintenance and storage of Trichoderma lignorum 81-17, growing fluid culture of microscopic fungus in sucrose yeast extract me-dium, feed additive with cellulolytic properties out-put and quality control, packaging, storage and disposal of waste. We have shown that the Mycocel is non-toxic feed additive for protozoa and warm-blooded animals (laboratory mice and quails). This study demonstrated total population livability in the experimental group with feed additive. Quail body-weight of experimental group was higher by 6% as compared to the control and feed consumption per 1 kg of live weight of bird was 3,58 kg, 7,5% lower than the control
This review contains the information about the role of annelids in maintaining soil fertility. Recommendations based on authors’ experience and scientific literature are given for vermicultivation,
biomass use of Californian worms in animal husbandry and vermicompost use in crop production. Furthermore, detailed description of the methods of cultivation of worms is given
Carotenoid preparations are quite widely used in a health care, but in the veterinary and animal husbandry, their use is limited. In terms of livestock farms of the Krasnodar region and the Rostov region at the biochemical monitoring studies of the cattle blood the lack of carotene in the serum is revealed from 45 to 100 % of the samples. To study the biological function of carotenoid we used preparations, which are the oily solutions for injections: β-carotene (manufactured by FS 42-3867, which is produced from the biomass culture of the fungus Blakeslea trispora) and lycopene, emitted from plants. The cows in the test groups during the dry period and within two weeks after birth got carotenoid preparation subcutaneously at a dose of 10 ml per animal with an interval of 7 days. As a result, it was found out that the application of carotenoids has the most favorable conditions for the flow of labor and the postnatal period, which are manifested in the decrease in obstetric and gynecological diseases in cows and reduce the period of infertility. In the experimental groups the levels of vitamin A and carotene1,3 times higher (1,26 ± 0,14 μmol/L vs. 0,97 ± 0,09 μmol/L ) 1,8 times (0,34 ± 0 03 mg /% vs. 0.61 ± 0.11 mg /%) respectively in comparison with the parameters of the intact animals at a high level of confidence (P < 0,05). Phagocytic number and percentage of digestion of neutrophils increased by 8,5 %, the difference in the number of B-cells reached 9,1%, T-cells – 6,7%. In a humoral immunity found a significant increase in Ig A. After comparison of the level of lysozyme activity of blood serum was observed its reduction in all animals immediately after birth, but in the experimental groups this process was less pronounced. The use of carotene preparations helps to reduce the concentration of lipid peroxidation products in the body of cows (diene conjugates - by 16,6 %, ketodienes - by 35,7 %, malondialdehyde – by 11,3 %), which creates favorable conditions for the flow of the metabolic processes associated with ensuring the normal childbirth and post-partum involution of the genitals. In the group of cows, receiving the carotenoid lycopene, the dyspepsia morbidity of the newborn calves compared to a control decreased by 26,7 %, bronchopneumonia - by 13,3 %
The article provides an overview of materials of conferences on problems and prospects of the industry of cattle breeding
Pasteurella multocida is an important respiratory pathogen of cattle. OmpH Protein is a major protective antigen of bacteria has been well studied in avian strains. In the literature there are no data available for the study of a variety of sequence of this protein among isolates with cattle respiratory pathology. There have been described several genes associated with the virulence of the bacterium in respiratory disease of cattle, but none of the authors compared the frequency of detection of these genes with the pathogenicity for laboratory animals. The aim of our study was the development of allele-specific PCR to determine Omph-types of Pasteurella multocida and the search for new approaches to assess the pathogenicity of isolates of bacteria. Total amount of 83 isolates allocated from the lungs of calves with respiratory pathology was investigated. All isolates belonged to groups A or D (isolates 63 and 20, respectively). Among isolates of capsular serogroup A we revealed 6 types, most propagation types were A1 and A2. All isolates of capsular serogroup D were one omph- type. In 16 out of 23 farms there were identified isolates of only one omph-type, 4 - 2 types, 3 - three types. The frequency of gene hgbb - hemoglobin binding protein correlated with pathogenicity of isolates for white mice. The developed allele-specific PCR along with hgbb gene detection can be used for screening and studying the properties of antigen and circulating pathogenic isolates and selecting a candidate vaccine strains