Research was directed towards selection of national, accessible and cheap ingredients of whole milk replacers in the conditions of the Republic of Belarus. The efficiency of compounding preparation and its use in calves feeding at an early age was analysed. There was developed the technological scheme of application of hydrodynamic installation which operates according cavitating principle and makes it possible to receive the homogeneous and finely divided mass directly from grain forage that is very important for preparation of milk replacer. New equipment gives the chance to lower power consumption on 17%, to receive economic benefit. During testing of developed of milk replacer-1 (used for calves feeding since one month old) and milk replacer-2 (used for calves feeding since two months old) and their comparison with the whole milk replacer Kalvolak (the Netherlands) it was revealed, that indices of a daily average weight gain in calves of the first group fed with foreign milk replacer, and in calves of the second groups, which were fed with the national milk replacer, did not show authentic differences (806 and 816 g). However, the prime cost of 1kg of live weight gain in the second case was on 43% cheaper than in the first one. The cost price of 1kg of live weight gain of calves on expenses for fodder units in trial group was on 33% cheaper in comparison with the control group

Comparative evaluation of the influence of cell-free probiotic preparation Laktimet and cellular probiotic Bifilak on productivity, livability, nonspecific response of suckling piglets in the early extrauterine life was realized in the conditions of the Republic of Belarus.Application of both probiotics increased the productivity of suckling pigs, stimulated the processes of metabolism and natural protection of organism in the early postnatal period in the conditions of specialized pig breeding complexes. Research results showed, that application of brand new cell-free probiotic Laktimet exercised higher influence on suckling pigs. Application of Laktimet made it possibler to increase piglets body weight gain on 7,8%; piglet livability - on 6,7%; and application cellular probiotic preparation Bifilak - on 5,4% and 3,3%, respectively. The same tendency was noted during the analysis of indexes of cellular factors of organism protection. Bactericidal activity of blood serum of experimental animals changed both in connection with age, and under influence of probiotic preparations. During all studied periods the bactericidal activity of blood serum was authentically (P less than 0,05) above in experimental groups in comparison with a control group. At 20-days old piglets there was stated the strengthening of bactericidal activity of blood serum. Throughout all period of experiment the superiority of trial animals over control on indicators of lysozyme activity of blood serum was observed

The comparative analysis of application of cereal ensilage produced with addition of microbial and enzymatic preserving agents Axphast Gold and Biotrof on fodder digestibility, hematological indexes and cicatrical digestion of cattle rearers was realized in the conditions of the Republic of Belarus. Cattle feeding with the analysed silage rendered positive effect on digestibility of the forage dry matter, which was on 2% higher the control index, organic matter - on 2,4%, nitrogen-free extractive substances - on 2,84%, fat - on 0,58%, protein - on 2,3%, cellulose - on 2,1%. Use in feeding of ensilaged forages from the cereal perennial grasses preserved by the microbial- enzymatic preparation produced by company Biota rendered the positive influence on use of nitrogen, calcium and phosphorus. There was also noted the increasing of the content of volatile fatty acids in paunch of young cattle silage fed with Axphast Gold that testified of more effective utilization of forage

Sodium hypochlorite solution is an effective means in control of noncontagious aetiology diseases, accompanied by development of endogen intoxications. The detoxification action of sodium hypochlorite is that in the body there is no becomes free active oxygen, oxidizing there toxic and ballast substances as bilirubin, urea, ammonia, uric acid, creatinine, cholesterol, carbonic oxide, acetone, acetone acetate, ethanol, methanol, barbiturates, etc. The detoxification action of sodium hypochlorite is shown in neutralization of exotoxins and endotoxins of pathogenic microorganisms as it represents a compound of the small molecular mass and the small structural size. In this connection it freely gets through membranes of cells and oxidizes the toxins containing not only in blood, but also in cells. From this follows, that sodium hypochlorite models not only oxidizing function of cytochrome Р-450 of liver, but also phagocytal function of neutrophilic leucocyte. It leads to inactivation of large toxic molecular compounds both on a surface of uniform elements, and in blood plasma while effective methods reduce intoxication at the expense of removal of the average molecules circulating in plasma

The effectiveness of stress prevention with use of sedative remedy Xyla in a complex with preparations Ascorbic acid with glucose, Aesel and Katosal, which improve adaptation, was researched. Application of a complex of neurotropic and adaptogenic preparations before and after dehorning promoted softening of stressful influence, that in turn has positively affected the general condition of animals and intensity of growth. Comparative test of four schemes of preventive maintenance of negative consequences of the stress caused calf dehorning, has shown their high efficiency. However more expressed stimulating influence on intensity of metabolism, antioxidant status, natural resistance, adaptation to action of stresses-factors and rates of a body weight gain were rendered by the scheme with use of preparations Aesel, Ascorbic acid with glucose and Ksila

The results of Pasteurella allocation from fur animals on the basis of studying of their cultural-morphological, biochemical properties and definition of a specific accessory are given. As a result of carrying out of bacteriological research of the pathological material received from fur animals, pure cultures have been allocated. On the basis of cultural-morphological and biochemical properties these cultures are carried to Pasteurella multocida. At serotyping these cultures Pasteurella multocida are carried to serovariants A, B and D. For selection the most important in the epizootic relation serovariants A and B Pasteurella multocida have been selected. Selected strains of serovariants A and B Pasteurella multocida had stable properties for everyone serovariant Pasteurella, that has given the basis to passport them in a collection of microorganisms to The S.N.Vyshelesskij Institute of Experimental Veterinary Medicine and a demand tax in the National centre of intellectual property at Ministerial council of Belarus on patents | Приводятся результаты выделения от пушных зверей пастерелл на основании изучения их культурально-морфологических, биохимических свойств и определение серовариантной принадлежности. В результате проведения бактериологических исследований патологического материала, полученного от пушных зверей, были выделены чистые культуры на основании культурально-морфологических и биохимических свойств и отнесены к Pasteurella multocida. При серотипизации установленные культуры Pasteurella multocida отнесены к серовариантам А, В и D. Для проведения селекции были отобраны наиболее важные в эпизоотическом отношении серовариан-ты А и В Pasteurella multocida. Селекционированные штаммы серовариантов А и В Pasteurella multocida имели стабильные свойства для каждого сероварианта пастерелл, что дало основание паспортизировать их в коллекции микроорганизмов Инстита экспериментальной ветеринарии им. С.Н. Вышелесского и подать заявки в Национальный центр интеллектуальной собственности при Совете Министров Республики Беларусь на патенты

The data about influence of the developed home-produced inactivated vaccine against pasteurellosis of fur animals on blood, biochemical, immunity indicators at mink are cited. It is established, that application of the given preparation conducts to formation of the necessary immune answer. The developed domestic inactivated vaccine against pasteurellosis of fur animals is a harmless and areactogenic preparation. This vaccine does not render negative action on hematological and biochemical indicators of mink blood. They are identical to indicators in control group of fur animals. Immunization with this vaccine stimulates cellular and humoral immunity factors that testifies to formation of the proof immune answer | Приведены данные о влиянии разработанной отечественной инактивированной вакцины против пастереллеза пушных зверей на гематологические, биохимические, иммунологические показатели норок. Установлено, что применение данного препарата ведет к формированию необходимого иммунного ответа. Разработанная отечественная инактивированная вакцина против пастереллеза пушных зверей является безвредным и ареактогенным препаратом. Инактивированная вакцина против пастереллеза пушных зверей не оказывает отрицательного действия на гематологические и биохимические показатели крови норок. Они идентичны показателям в контрольной группе пушных зверей. Иммунизация инактивированной вакциной против пастереллеза пушных зверей стимулирует клеточные и гуморальные факторы иммунитета, что свидетельствует о формировании стойкого иммунного ответа

Research on studying of probiotics and prebiotics influence on natural resistance, hemogenesis, metabolism, growth, development and safety are spent on chickens of 1-37-day age in the conditions of clinic of the department of internal noncontagious diseases and the central resarch laboratory of research institute of applied veterinary medicine and biotechnology Vitebsk State Academy of Veterinary Medicine. It was established that the combined use of probiotics and prebiotics increases the defense, raises safety rate and stimulates body weight gain in broiler chickens. Hence, probiotics and prebiotics at joint application render expressed growth-promoting effect, promote high safety of young growth, disease decrease, increase in a weight gain, raise indicators of the general and local protection, stimulate hemogenesis and exchange processes during the most intense periods of bird cultivation. At separate application of probiotics and prebiotics these indicators were a little lower, but authentically above, than at chickens of control group | Исследования по изучению влияния пробиотиков и пребиотиков на естественную резистентность, гемопоэз, обмен веществ, рост, развитие и сохранность, проведены на цыплятах 1-37-дневного возраста в условиях клиники кафедры внутренних незаразных болезней и центральной научно-исследовательской лаборатории Научно-исследовательского института прикладной ветеринарной медицины и биотехнологии УО ВГАВМ. Совместное применение пробиотика и пребиотика усиливает защиту, повышает сохранность и стимулирует прирост массы тела цыплят-бройлеров. Следовательно, про пробиотики и пребиотики при совместном применении оказывают выраженное ростостимулирующее действие, способствуют высокой сохранности молодняка, снижению заболеваемости, увеличению прироста массы, повышают показатели общей и местной защиты, стимулируют гемопоэз и обменные процессы в наиболее напряженные периоды выращивания птицы. При раздельном применении пробиотиков и пребиотиков эти показатели были несколько ниже, но достоверно выше, чем у цыплят контрольной группы

The data on an inactivation scheme for the agent of porcine pasteurellosis, development of the inactivated vaccine and ratio of the antigen and adjuvant are presented. As a result of the realized research it has been established, that for Pasteurella inactivation it is necessary to use formalin in concentration of 0,5% at an exposition at 1 hour. At vaccine producing it is necessary to apply an antigene parity to adjuvant 50:50 as the received vaccine does not concede on all parameters to the vaccine in which a parity of components accordingly 40:60. Thus received vaccine possesses smaller reactogenicity and more adjuvanticity. One of the basic conditions of reception of homogeneous stable emulsion is warming up of water and oil phases to temperature 30 deg С (+/-1 deg С). | Представлены сведения о разработке схемы инактивации возбудителя для изготовления инактивированной вакцины, а также о выборе соотношения антигена и адъюванта. В результате проведенных исследований было установлено, что для инактивации пастерелл следует использовать формалин в концентрации 0,5% при экспозиции в 1 час. При изготовлении вакцины необходимо применять соотношение антигена к адъюванту 50:50, так как полученная вакцина не уступает по всем параметрам вакцине, в которой соотношение компонентов соответственно 40:60. При этом полученная вакцина обладает меньшей реактогенностью и большей иммуногенностью. Одним из основных условий получения однородной стабильной эмульсии является подогревание водной и масляной фаз до температуры 30 deg С (+/-1 deg С).

There was developed a method of increasing the efficiency of used feeds and poultry productivity by means of stimulations of natural resistance of an organism by biologically active substances (Vigozin preparation, containing carnitine). Application of preparation Vigozin with potable water twice in a dose of 1 ml on 1 l of water within first 3 days and for 13th day of cultivation allows to raise safety of chickens-broilers on 2,3% at the expense of normalization of metabolism at young growth and preservation of a functional condition of a liver. Results of the general clinical and the immunological analysis of blood at chickens-broilers of control and trial groups (M+/-m, n=10), biochemical indicators of blood at chickens-broilers of control and trial groups in age dynamics (M+/-m, n=10) are presented. | Целью работы являлось научное обоснование и разработка способа повышения эффективности использования кормов и продуктивности птицы путем стимуляции естественной резистентности организма биологически активными веществами (препарат Вигозин, содержащий карнитин). Применение препарата Вигозин с питьевой водой двукратно в дозе 1 мл на 1 л воды в течение первых 3-х суток и на 13-й день выращивания позволяет повысить сохранность цыплят-бройлеров на 2,3% за счет нормализации обмена веществ у молодняка и сохранения функционального состояния печени. Представлены результаты общего клинического и иммунологического анализа крови у цыплят-бройлеров контрольной и опытной групп (M+/-m, n=10), биохимические показатели крови у цыплят-бройлеров контрольной и опытной групп в возрастной динамике (M +/- m, n=10).