Determination of a degree and stages of metabolic disorders of aborted sows and sows which gave birth to dead fetus was realized in the conditions of the Republic of Belarus. Analysis of biochemical profile of blood of experimental sows was given. Typical deviations of biochemical status indexes in the conditions of reproduction pathology were determined. The highest degree of deviations of biochemical blood profile (indexes of fat, protein and mineral metabolism) was stated at aborted sows. At sows which gave birth to dead fetus there were stated abnormalties functional state of kidneys and liver, indexes of carbohydrate and mineral metabolism.

In the conditions of the Republic of Belarus there was developed a method of surgical treatment of servicing bulls with penial tumors including tumor removal by means of gas docker Tail Docker and intravenous 0,5% novocaini solution injection during postoperative stage makes it possible to reduce the duration of surgical operation in 3-4 times, completely remove probability of bleeding, reduce the healing period on the average on 6 days and lower the probability of relapse of tumor.

In the conditions of the Republic of Belarus there was realized a study of age-specific features of level of erythrocytes, haemoglobin in blood, activity of aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, alkaline phosphatase, as well as concentration of calcium, phosphorous, magnesium and ferrum in blood serum of suckling colts in the first 6 months of life. In the studied animals there was stated increased levels, haemoglobin and ferrum concentration in blood, but during the 6th month of life the same indexes decreased considerably. The most considerable changes оf blood serum enzymatic activities occurred at the age of 2 and 6 months. Thus, during the 2nd month of life a raise in ALAT, LDH activity, calcium and phosphorus concentration was noticed. At the age of 6 months ALAT and ASAT levels increased, and LDH activity, magnesium and phosphorus concentration decreased. During the first 6 months of life the ALP activity was on a high level and underwent no reliable changes. As the research showed, blood serum enzymatic activity and concentration of calcium, phosphorus, magnesium and ferrum depended on colt age and change at the process of growth and development of animals.

Studies of morphological and morphometrical particularities of rennet of newborn calves with different degree of antenatal hypotrophy were realized in the conditions of the Republic of Belarus. Scientific-and-production researches were spent in 2007 - 2008 on the basis of agricultural production co-operative Dembrovo (Shchuchinskij district, Grodno area, Belarus), agricultural production co-operative Okhovo (Pinsk district, Brest region, Belarus) and research laboratory of Grodno State Agrarian University (Belarus). For an estimation of morphofunctional maturities there were used 165 1-day old calves. Research results showed that in the studied calves the basic indexes of glanderous apparatus of rennet proved the different degree of morphofunctional immaturity. In calves with hypertrophy in the first days after birth there stated an active morphogenesis of all cytological components of rennet

Study of sensitivity of Paenibacillus alvei to different antibiotic preparations (penicillin, tetracycline, neomycine, kanamycin, ampicillin, polymyxin, laevomycetin, enrofloxacin, tylosin, and streptomycin) was realized in the conditions of the Republic of Belarus. As the material of the research there was used the culture of agent the European foul brood caused by Paenibacillus alvei. Determination of therapeutic effectiveness of antibacterial agents in vitro conditions made it possible to choose the appropriate preparation for its use at beeyards with European foul brood caused by Paenibacillus alvei. During the experimental work there were used 10 antibacterial disks with various antibiotics. The best result against Paenibacillus alvei was shown by Tilozin, the diameter zone of growth inhibition was about 47,2+/-3,43 mm.

Sensitivity of European Faulbrut causative agent to Gentavet preparation was studied in the conditions liquid nutritive media in vitro in the Republic of Belarus. Research results showed that the studied preparation rendered the poisonous influence on European Faulbrut causative agent in concentration of 0,3 mkg/ml with the maximum rate 1:131072. The antibiotic showed the bacteriostatic ability in concentration of 0,15 mkg/ml. The antibacterial preparation did not influence the European Faulbrut causative agent in concentration of 0,01 mkg/ml. The total bacteriostatic effect the drug showed in concentration of 0,22 mkg/ml and its dilution of 1:196608.

Analysis of data on distribution of clinicopathologic symptoms of rhinotracheitis, parainfluenza-3, bovine viral diarrhoea, clamidiosis, rhinosyncytial virus, adenovirus diseases, rotaviral diseases, coronavirus infections of cattle, viral transmissible gastroenteritis, and respiratory reproductive syndrome of swine, rinderpest, rabies and Aujesky disease of agricultural animals in the conditions of the Republic of Belarus was realized. There were given descriptions of diagnostic tests and vaccines for disease prevention used in Belarus and other countries. Treatment regimen and methods and other elements of prophylaxis were presented. There was given an analysis of prophylactic efficiency of produced medicine drugs

The realized studies of an experimental series of inactivated vaccine showed that the developed biological preparation made it possible to achieve high preventive efficiency in the conditions of cows heavy with calves for the creation in newborn calves the expressing immunity after milk feeding in the first hours of their life. As a result realized in the conditions of the Republic of Belarus production experiment of emulsified vaccine against rotavirus infection and colibacillosis of cattle in animal breeding farms of different regions of the Republic the prophylactic efficacy of a developed vaccine made up 97,9-98,9%. Research results showed that the developed inactivated vaccine caused at the immunizated animals the formation of specific antibodies at a higher level in comparison with other analyzed national and foreign analogue preparations.

There were presented data on etiology, specific prophylaxis and treatment of the most widespread infectious diseases of fishes in the Republic of Belarus: aeromonosis, pseudomonosis, swim bladder inflammation (air bladder disease), viral branchionecrosis. For the preparation of highly efficient specific medical and veterinary preparations it was recommended during the outbreaks of fish diseases to allocate the local pathogens on the basis of which it was recommended to produce vaccines both for perinatal and immersion administration for their wide use both for commodity fishes and for different ages and categories

The information on necessity of carrying out of monitoring and purposeful scientific research on studying of infectious diseases of wild animals in hunting farms of the Republic of Belarus was presented in order to lower their negative influence on state of a population of resource species of wild animals. On the territory of Belarus in the studied wild animals there were stated 42 infectious diseases, including 36 ones which were the reasons of death of valuable hunting and fur-bearing animals. The greatest threat from infectious diseases was represented by rinderpest, pasteurilosis, salmonellosis, furiousness, necrobacillosis, listeriosis, botulism, tuberculosis, pseudorabies, the Siberian ulcer and hoof-and-mouth disease. Many diseases represent danger to human beings, the other lead to a various degree losses for the hunting economy of the country