Results of determination of yielding capacity, chemical composition of initial weight and silage quality of forages prepared from the binary mixtures of Japanese millet (Panicum curs-galli var. frumentaceum), millet (Panicum) and saccharine sorghum (Sorghum saccharatum) realized in the conditions of the Republic of Belarus were presented. Research results showed that the binary mixture of saccharine sorghum with blue lupine (Lupinus angustifolius) in ratio of 70% + 30%, respectively made it possible to obtain the highest efficiency (62,4 t/ha of green material, 15,1 t/ha of dry matter, 13,1 t/ha of fodder units). Mixed sowing of millet, Japanese millet and saccharine sorghum with blue lupine surpassed in productivity the single-crop sowing on 15,5-32,6%. It was established, that the silage produced from the mixture of sorghum and Japanese millet with lupine had higher energy and protein nutritive value: 0,86 and 0,98 fodder unit, respectively; 9,77 and 9,92 mJ of exchange energy per 1 kg of dry matter, respectively; 103, 3 and 108,4 grams of digestible protein per 1 fodder unit. High nutritive value and the best palatability of trial silos promoted the increasing of milk yield on 4,4-5,4% in comparison with the control tests. Haylage which was produced from drought resistant crops had high energy nutritive value: per 1 kg of dry matter there was noted 9,40-9,48 mJ of available energy, 0,89-0,94 fodder units with fodder unit provision with 102-114 grams of digestible protein

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

There was studied the width of distribution and peculiarity of clinical manifestation of mineral exchange diseases at pregnant sows, and also perfection of preventive actions at pathology of mineral metabolism in the conditions of prophylactic medical examination. Results of research have shown, that diseases of mineral metabolism widespread (84,7%) among pregnant sows in the conditions of industrial production, are most extended scarce conditions on Zn (17,7%) and Fe (22,5%). Clinically this insufficiency was expressed by oppression, appetite distortion, occurrence on a skin of specifically red stains correct roundish the form: with the clarified sites in the centre, are registered as abortions at final stages of pregnancy. It is established, that the way of preventive maintenance of hypomicroelementosis of pregnant sows with use of chelated forms of microelements is more preferable than sows, as reduces percent of clinical display of Zn and Fe deficiency, stabilize level of hematological and biochemical indicators of blood more effectively, and also raise industrial indicators of pregnant sows. | Целью работы было изучение широты распространения и особенностей клинического проявления заболеваний минерального обмена у супоросных свиноматок, а также совершенствование профилактических мероприятий при патологии минерального обмена веществ в условиях диспансеризации. Результаты исследований показали, что болезни минерального обмена веществ широко распространены (84,7%) среди супоросных свино¬маток в условиях промышленного производства, наиболее распространены дефицитные состояния по Zn (17,7%) и Fe (22,5%). Клинически эта сочетанная недостаточность выражалась угнетением, залеживанием, понижением и извращением аппетита, появлением на коже специфически красных пятен правильной округлой форма: с просветленными участками в центре, зарегистрированы так же аборты на конечных стадиях супоросности. Установлено, что способ профилактики гипомикроэлементозов супоросных свиноматок с использованием хелатных форм микроэлементов предпочтительнее, поскольку сокращает процент клинического проявления дефицита цинка и железа, эффективнее стабилизируют уровень гематологических и биохимических показателей крови, а также повышают производственные показатели супоросных свиноматок.

Despite of presence of a wide choice of antihelminthics, in the Republic of Belarus it is still a real problem of development of preparations that provide long-term treatment and preventive maintenance efficiency against helminthosis. At the same time, helminthes and anthelminthics render the immunosuppression action. The solution of this problem can be a combined application of antihelminthics and adjuvants. There were proposed preparations Albepolis and Averpolis. Their application made it possible not only to release an organism of animals from parasites, but also to correct the state of immune system. The obtained research data confirm the available data about the immunosuppression action of parasites on an organism of animals. There was also is noted the immunosuppression action of Albendazol and Aversektin C in therapeutic doses. Albendazol possess a wide spectrum of action against trematodes, nematodes, cestodes. It interrupts the metabolism, oppresses fumarate reductase activity and adenosine triphosphate synthesis of a parasite. It proved to be low-toxic for homoiothermal animals. Albendazol rendered positove influence on growth, development and increase of cattle productivity.

In the conditions of the Republic of Belarus there was studied the antihelmintic characteristics of the preparative forms of marsh cinquefoil (Comarum palustre): herbal infusion, infusion, liquid, extract, pulvis. The research has shown that these preparative forms in the specified dozes had a rather high therapeutic efficiency against strongylatosis of gastro-intestinal tract of young ruminants. The highest therapeutic effect was rendered by a liquid extract of Comarum palustre after its administration to animals in a dose of 0,2 ml/kg twice with 24 hour interval. In this case during the strongylatoses of a gastroenteric tract the antiparasitic intensefficiency of sheep and cattle by the end of experience was 98,1% and 97,3% respectively, and antiparasitic extensefficiency was 90% for both kinds of animals. After herbal infusion application of Comarum palustre for animals (in a dose of 7 ml/kg of live weight before feeding once a day within 3 days continuously) by the end of the 14 day of the experiment made it possible to obtain intensefficiency of 70% for both animal species, and extensefficiency of 60% for sheep and 70% - at calves. Tincture application of marsh cinquefoil for animals in a dose of 1 ml/kg of live weight of twice with 24 hours interval, provided the intensefficiency of 85% for sheep and 84% - for cattle, and extensefficiency of 70% and 80%, respectively. In the conditions of application of a pulvis of marsh cinquefoil in a dose of 500 mg/kg of live weight twice with 24 hours interval, made it possible to obtain the 63,4% intensefficiency for sheep and 67,8% - for calves, and extensive efficiency - 50% and 40%, respectively.

In the conditions of the Republic of Belarus there was realized an experimental study of a new method treatment of calves diseased with abomasoenteritis by means of application of a preparation Ranitidin. As a result of realized research it was established that the preparation had an expressed therapeutic activity. Inclusion of Ranitidin preparation into the complex therapeutic regimen of calves sick with abomasoenteritis with the enteral feeding once in day in a dose of 0,15 g promoted the reduction of duration and decrease in severity of the disease. There were presented the results of biochemical blood indicators in trial and control groups of calves, haematologic indices in trial and control groups of calves prior to the beginning of experiment and in the end of the test.

In the conditions of the Republic of Belarus there were analyzed productivity indexes of sows of different families and family groups and their compatibility with male pigs of different lines of Belarusian meaty breed and Landras. On the basis of the realized research it was marked, that according to the number of piglets in a litter and multiple pregnancy distinctions between breeding sows of Landras breed and Belarusian meaty there was not observed. From sows of both breeds in average per farrowing there was obtain 11,0 - 11,2 piglets, including 10,4 - 10,5 live piglets, that exceeded requirements of the first class of the instruction on evaluation of pigs on 4,0 - 5,0%. At the same time, sows of the Belarusian meaty breed had litter weight at weaning in 40 days of 104 kg, that was authentically higher on 8 kg or on 8,3% (Р less than 0,001), than sows of Landras breed. In each breed there were some distinctions in sow productivity by families and in breeding with boars of different lines.

In the conditions of the Republic of Belarus there was studied the propagation, botanical characteristic, chemical composition and pharmacological properties of marsh cinquefoil (Comarum palustre) and its application in the veterinary practice against strongylatosis (Strongylata) of gastrointestinal system of cattle young stock. Reserch results showed that the perennial herbage plant marsh cinquefoil from Rosales (Rosaceae) family possessed different therapeutic properties: antipyretic agent; styptic agent; diuretic agent; bonding agent; wound healing substance; tonic agent; promotoring agent. Research results showed that the preparative forms (broth; liqueur; liquid juice; powder) of marsh cinquefoil possessed an active agent proanthocyanidin, a condensed tanning substance which were included into composition of a polyphenolic complex and proved to be efficient for treatment of cattle young stock strongylatosis.

In the conditions of the Republic of Belarus there were analyzed the doses and efficiency of application of selenium in composition of a mixed fodder KP-2 in diets of bull calves of at their breeding for meat. In course of the study the was developed a formula of a mixed fodder with various doses (0,1; 0,2; 0,3 mg per 1 kg of a dry matter of a ration) of selenium; there was studied the influence of different selenium doses in mixed fodders on palatability of diets, their digestibility, use of nutritive elements and hematological indexes of animals. Also, there was analyzed the influence of different doses of selenium on bull calves growing intensity. There was given the zootechnical and economic evaluation of usage of selenium for bull calves. Selenium dose of 0.2 milligram per 1 kilogram of dry matter proved to be the most efficient and promoted the increasing of average daily body weight gain on 10.9%.

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