The comprehensive approach to solving the issue of the animal raising intensification, the integrated part of which is herd breeding, animal yield preservation and its development provision, conditioned the enhancement of the research works aimed at further investigation of young stock diseases, features of their digestion development, search of efficient preventive and treatment measures, feeds and feed additives for simulating animal growth and development. The main objective of this study was the exploration of comparative therapeutic efficiency of the use of in treatment of calves, in acute digestive disturbances in the complex of conventional treatments. The experiment was carried out in the conditions of Danilovsky Complex of Semenovsky Stud Farm CJSC of Medvedev District in Mari El Republic in calves aged 2-4 days with clinical signs of digestive dysfunction. 3 experimental groups of calves were formed observing the principles of analogues. Calves of the first and the second experimental groups, in addition to the treatment regimen adopted at the farm, were given with milk or milk at the rate of 6 grams and 4 grams, respectively per one calf once a day. and biochemical analysis was carried out in all experimental calves at the beginning of the experiment and 5, 10 and 15 days after the treatment start. The experience demonstrated that has a normalizing effect on protein, carbohydrate, mineral metabolisms, and pH balance. The positive effect of this drug on animals is conditioned by the effect of it selectively stimulates the growth of useful intestinal normal flora by inhibiting pathogenic flora of colon.
Abstract. This article summarizes the results of a study of the cultural properties of the swine reproductive and respiratory syndrome virus isolate in transferable cultures of MA-104, PK-15, MARC-145 and Vero cells. The purpose of our research was to determine the sensitivity of cell culture lines to the swine reproductive and respiratory syndrome virus isolate, which is necessary for obtaining a highly active antigen as the main component of diagnostic and vaccine biologics. An isolate of the virus was isolated from a Piglet in the LPH of the Moscow region of the Kolomenskoye district. The isolated isolate of an infectious disease of pigs by the method of molecular biological analysis is characterized in the established order for this pathogen. Novelty. The possibility of reproduction in MARC-145 cell culture has been demonstrated. Results. It was shown that during reproduction of the virus isolate in cell culture for 96 ± 6 hours at a dose of 0.1 TCD50 / cell infection, an antigen with high biological activity was obtained. Infectious activity of the virus on the MARC-145 culture averaged 5.51 ± 0.45 lg TCD50/cm3 after the first three passages (after adaptation). Real-time PCR confirmed the presence of the virus genome in the test samples. Detection of the virus antigen in an infected cell culture was determined by the manifestation of a specific glow in the indirect immunofluorescence (RNIF) reaction in the cell culture monolayer fixed with acetone. It was found that FITZ-conjugate of rabbit polyclonal antibodies to pig immunoglobulins detected antigen-containing cells due to intense illumination.
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