Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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Name

Koshchayev Andrey Georgiyevich

Scholastic degree


Academic rank

professor

Honorary rank

Organization, job position

Kuban State Agrarian University
   

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Articles count: 36

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169 kb

MEAT PRODUCTIVITY OF BULL CALVES UNDER INTENSIVE REARING

abstract 1592005013 issue 159 pp. 183 – 194 29.05.2020 ru 9
The article presents a comparative assessment of the meat productivity of young cattle of the two most common intensive meat breeds in the Russian Federation (Aberdeen Angus and Hereford) in comparison with the most numerous native in the South of the country domestic breed, which is Kalmyk. Intensive rearing from 9 to 18 months of age was carried out in the conditions of industrial fattening complex on rations not containing juicy forages. In the process of 273-day intensive rearing, in bulls of the tested breeds average daily live weight gains from 1455 to 1526 grams were achieved. During this period, an absolute increase was obtained in Aberdeen-Angus bulls-416.6 kg, in peers of Hereford and Kalmyk breeds-413.6 and 397.2 kg. The highest pre-slaughter live weight and slaughter rates were noted in Aberdeen-Angus bulls, having a yield of a pair carcass of 59.4 % and a slaughter yield of 62.8 %. The meat of Aberdeen-Angus bulls has the highest content of fat and dry matter, but they have less protein, lower pH and moisture binding capacity and a higher loss of meat juice during cooking, compared with the bulls of the Kalmyk breed. It was confirmed that the coefficients of transformation of protein and energy into products are closely related to the intensity of growth and weight of the carcass. The most effective of these indicators were in bulls of Aberdeen-Angus, then Hereford and Kalmyk breeds. A similar pattern between the breeds was manifested in terms of profitability and cost recovery
433 kb

CHARACTERISTICS OF THE STATE OF SHEEP BREEDING IN RUSSIA AND THE ROSTOV REGION AND PROSPECTS FOR THE DEVELOPMENT OF THE INDUSTRY

abstract 1572003029 issue 157 pp. 392 – 410 31.03.2020 ru 10
The article provides a convincing argument for the preference of wool and fur products over artificial and synthetic textile fibers. It is noted that artificial fibers and synthetics have negative ionization, while natural wool has positive ionization. It is emphasized that negative ionization is far from harmless to humans. The analysis of the state of sheep breeding in the Russian Federation is given and this industry in the Rostov region is characterized against this background. The data on the number and productivity of sheep of the main age and sex groups, the production of young animals per one hundred ewes are presented. The characteristic of tribal resources of the country and region is given. The breeding base of the industry in the Russian Federation is represented by 205 breeding organizations, including 3 breeding and genetic centers, 44 breeding plants, 145 breeding reproducers and 13 gene pool farms, which contain 1389.8 thousand sheep (39.0 % of their total number in agricultural organizations and 6.6 % of the sheep population in farms of all categories), including 904.7 thousand Queens (35.0 and 6.2%, respectively). The breeding base of the Rostov region has eleven farms, of which 6 breeding plants for such breeds as the Soviet Merino and salskaya and 5 breeding reproducers. In addition to these breed resources, there are breeding reproducers for the qigai and edilbaev breeds in the region. Total number of breeding sheep in the region is almost 44 thousand. The article indicates main problems in the development of the industry and ways and means to solve them
240 kb

FATTENING QUALITIES AND MEAT PRODUCTIVITY OF SALSKAYA SHEEP BREED OF IMPROVED GENOTYPES

abstract 1541910033 issue 154 pp. 360 – 382 30.12.2019 ru 11
Improvement of domestic breeds of Merino sheep remains an important task. The reorientation of the industry to wool-meat and meat-wool direction of productivity can contribute to the restoration of domestic sheep breeding. An example of such conversion is a relatively young breed called Dzhalginsky Merino, created in the Stavropol region on the basis of the Stavropol breed with the involvement of resources of domestic and world breeding. In the current situation, it seems relevant to use Dzhalginsky Merino, in order to improve the meat and wool qualities of sheep of domestic fine-wool breeds. Obtaining a new genetic combination of animals, formed by combining the genotypes of breeds Salsky, Stavropol and Dzhalginsky Merino will increase the efficiency of the industry in a market economy and will provide a more complete use of the productive potential of the breed. The results of studies on obtaining and use of animals, new genetic combinations of a wool – meat direction of productivity, with high energy of growth, meat and wool productivity, improves the efficiency of Merino sheep are an important theoretical justification for making a contribution to zootechnical science, with the aim of improving fine-wool breeds of sheep and can be used in practical work in the production of high quality lamb
412 kb

CORRECTION OF DYSBIOTIC DISORDERS IN BEES BY USING PROBIOTIC MEDICATIONS

abstract 1582004019 issue 158 pp. 268 – 279 30.04.2020 ru 18
This article provides an overview of the need of the use of probiotic supplements and medications in the diets of insects, in particular bees and their families. We present a list of both Russian and foreign probiotics and their complexes, which are used in beekeeping for the treatment and prevention of various diseases, are shown. Their effectiveness is shown not only for the prevention and treatment of microbial disorders in the gastrointestinal tract of bees due to the manifestation of antagonistic properties in relation to opportunistic and pathogenic microflora, but also the possibility of their use as tools that can increase the immune status, the safety of bee families, and life expectancy. The article shows data on the positive effect of probiotics on the physiological and biochemical parameters of honeybees, activation of metabolic processes in the formation of a fat body, growth of strength and weight of larvae, development of pharyngeal glands, etc.
161 kb

EFFECTIVENESS OF PROBIOTIC CULTURES AND THEIR CONSORTIUM ON THE MODELS OF EXPERIMENTAL INTESTINAL DYSBACTERIOSIS

abstract 1602006001 issue 160 pp. 1 – 10 30.06.2020 ru 19
The article demonstrates the results of therapeutic and preventive effectiveness of the use of lactic acid bacteria – Lactobacillus brevis and Lactobacillus parabuchneri in laboratory animals, in particular mice and rats. They were isolated from the gastrointestinal tract of a wild quail in experimental violation of the intestinal microbial background. Artificial imbalance of the intestinal microbiota of experimental animals was caused by the use of the antibiotic. As a result of tests it was established that the application of probiotic cultures improved microbial disorders of the gut, however, the use of their consortium in the probiotic promoted consistent clinical result characterized by an elevated level of representatives of the normal flora (lacto- and bifidobacteria) and reduction of the number of representatives of pathogenic and conditionally pathogenic microbiota, with subsequent achievement of a level characteristic of healthy animals
590 kb

ALLELE-SPECIFIC PCR FOR TYPING OMPH-TYPES OF PASTEURELLA MULTOCIDA AND SEARCING FOR NEW APPROACHES TO STUDYING OF PATHOGENICITY OF BACTERIAL ISOLATES

abstract 1471903033 issue 147 pp. 180 – 197 29.03.2019 ru 62
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
803 kb

MORPHOLOGICAL FEATURES OF I-FORMS OF PF-RELATED BACTERIOPHAGES IN PSEUDOMONAS AERUGINOSA PAOI LYZATES BY EXTRACTS OF EUROPEAN BIZON’S FEKALIA

abstract 1491905036 issue 149 pp. 181 – 194 31.05.2019 ru 127
In this work, we have found shortened particle forms of the filamentous bacteriophage Pf, when the lysis of the Pseudomonas aeruginosa PAO1 strain was induced by extracts of bison feces to study the intestinal bacteriophages of this animal. The sizes of the shortened particles from 250 to 950 nm and their thickness 17 nm were determined. The particles had a slightly pointed one end and sometimes a flag on the other extended end. The particles were formed in the process lysis of this strain by other bacteriophages. These lysates also contained a high concentration of vesicles from the pseudomonad membrane. The article discusses the mechanisms of prophage induction in the Pseudomonas aeruginosa PAO1 strain due to phage-phage induction and substances of the investigated extract
161 kb

DEVELOPMENT OF OPTIMAL WAY OF OBTAINING A HYDROLYZATE OF LACTIC ACID BACTERIA

abstract 1321708121 issue 132 pp. 1465 – 1477 31.10.2017 ru 168
The work was carried out in the scientific-research laboratory of the chair of Biotechnology, Biochemistry and Biophysics of Kuban SAU, the aim of which is the search of optimal conditions of obtaining the hydrolyzates of lactic acid bacteria by thermoacid and enzymatic ways. The pure cultures of microflora of gastrointestinal tract of quails − Lactobacillus agilis, Lactobacillus intermedius and Lactobacillus salivarius were the object of researches. Under conducting the thermal acid hydrolysis there were used the same correlations of bacterial mass and water as well as procedures of clearing of hydrolyzates. The variable conditions were рН, temperature and time of hydrolysis. When carrying out the enzymatic hydrolysis in this study there was used the enzyme from the group of muramidase lysozyme. The amount of enzymes and time of carried out hydrolysis were the variable conditions under obtaining the enzymatic hydrolyzates. In the process of researches there were studied: qualitative content of total protein, peptides with М.м. < 1500, protein and peptides with M.m. > 1500, aminoacids and as well as GMDP (glucosaminilmuramilpentapeptide). On the basis of carried out experiments there was stated that according to all components of biologically active substances the thermal acid way is more effective than enzymatic. The maximum accumulation of BAA in hydrolyzates by different ways was revealed at destruction of cells Lb. intermedius. Content of GMDP in thermal acid hydrolyzate was higher than in enzymatic on 0,028 g/100 ml (51,8 %)
295 kb

EFFICACY OF SUPRANOL AND UTEROTON IN PREVENTION OF ACUTE POSTPARTUM ENDOMETRITIS IN COWS

abstract 1501906003 issue 150 pp. 30 – 55 28.06.2019 ru 176
The article reflects information characterizing the significance of mastitis and endometritis in the indicator of premature disposal of cows from herds of large farms in the western regions of the Krasnodar region: an average of 30% of the total culling of cows. The effectiveness of veterinary measures in Pravoberezhny JSC of the Temryuk district for mastitis and endometritis in cows was assessed: 81-95%; fertilization index value ‒ 1.8; the duration of the service period exceeds the requirements by 20 days. The studies the nature of the influence of the drugs called Sepranol and Uteroton on the calving process and the occurrence of postpartum complications in cows from the herd, which was formed with violation of breeding principles. The use of the drugs Uteroton and Sepranol contributed to a 50% decrease in the calving index in calving cows by 50% compared with the results of the combined use of estrophan and oxytocin. The use of Uteroton reduced the damage from the lack of milk by 87880 rubles, and the use of Sepranol - by 171164 rubles. We have given practical recommendation on the use of Uteroton and Sepranol for veterinary effects on the body of cows in the early postpartum period in order to reduce the occurrence of complications
574 kb

INTENSIFICATION OF THE CULTIVATION PROCESS OF PHYSIOLOGICALLY-ADAPTED LACTOBACILLI AS A BASIS FOR THE CREATION OF BIOLOGICAL PRODUCTS OF MICROBIAL ORIGIN FOR POULTRY BREEDING

abstract 1281704076 issue 128 pp. 1101 – 1114 28.04.2017 ru 268
The work was done in the research laboratory of the department of Biotechnology, Biochemistry and Biophysics of Kuban State Agrarian University, the aim of which was to select the most appropriate nutrient medium for maximum growth of lactic acid microorganism growth. The object of the study was its own microflora of gastrointestinal tract of quails ‒ Lactobacillus agilis, Lactobacillus intermedius and Lactobacillus salivarius. As a nutrient substrate there were used 4 of the nutrient media: the medium for lactic acid bacteria (city Uglich), the melasse-autolysis medium, the glucose-peptone medium and the MRS. During the cultivation of the microflora of the variable parameters were the time and temperature of cultivation. During the cultivation of microflora the time and the temperature of growing were the variable parameters. In the process of growing there was carried out the analysis of dynamics of consumption of reducing substances and titers of microorganisms. According to the results of growing of microbial cultures there was revealed the active consumption of carbon substrate in used variants of nutrient media, and it was found that there was observed the maximum of cells to 24 h of cultivation. On the basis of carried out results of cultivation on different media and at different parameters there was determined that the most titer of cells was reached to 24 h at the temperature 38,0 °С on the melasse-autolysis medium. So, the melasse-autolysis medium can be recommended in production conditions as the cheaper substrate at the further development of biological preparations for poultry breeding
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