The use of low intensive red spectrum laser radiation for prevention of abomasoenteritis in calves is effective method. As a result the increase of erythrocytes level and saturation of them with hemoglobin happens. Natural resistance with bactericide and lysozyme activity are going up phagocytosis of neutrophils is activated. The most successful method are magnet-laser radiation of blood and laser acupuncture. There was studied the low intensive red spectrum laser radiation for prevention of abomasoenteritis in calves. During the research it is established, that preventive efficiency at abomasoenteritis in the first trial group has made 80%, in the second and the third - 90%. As a result of the spent work high preventive efficiency of action of the low intensive red spectrum laser radiation is established at prescription of through-skin blood irradiations by the therapeutic laser in a combination to a constant magnetic field and as a result influences on biologically active points. Application of these ways allows to reduce level of disease of animal abomasoenteritis. As a result of physiotherapeutic influence there is content increase of erythrocytes in blood of calves and saturation their haemoglobin. Natural resistance with bactericide and lysozyme activity are going up phagocytosis of neutrophils is activated. The most successful method are magnet-laser radiation of blood and laser acupuncture. It is caused by that positive changes occurring in an organism, have been more brightly expressed and besides preventive and economic efficiency of these ways of irradiation also were at higher level. In the tabular form dynamics of morphological indicators at calves under the influence of laser radiation, dynamics of indicators of natural resistance at calves as a result of the laser therapy, some biochemical indicators of blood is presented at carrying out of research.

Beef production in the Republic of Belarus could be competitive only in case of development of the specialized beef cattle breeding. Therefore, for the increasing of beef production and improvement of its quality in Belarus there was noted the necessity to use cattle beef breeds both in case of straightbred breeding, and in crossing with low income-earning Black-and-White cow stock. Research results showed that hybrid Gereford x Black-and-White breeds of the first and second filial generations showed higher reproductive abilities which were manifested in 105-120 days age reduction at the stage of the first insemination, 18-44 days reduction of service period, 0,07-0,1 times increasing of breeding efficiency index, 9,8-14,4% increasing of calf crop per 100 dams, and 14,4-16,4% increasing of young stock livability in comparison with the Black-and-White breeds calves. Research results showed that the non-heating season of the mongrel Gereford x Black-and-White heifer breeds of the first and second filial generations was 396-400 days, breeding efficiency index (rate of fertilization) - 1,29-1,32, breeding performance index - 85,4-90,0%, while for the at Black-and-White heifer breeds the same indices were 425 days, 1,29 and 75,6%, respectively

Application of protein, vitamin and mineral supplement in diets of 1-3 months old calves in rate of 5% per weight instead of a part of sunflower cake, containing rape, peas, lupin and vitamid on a basis of halites, phosphite, phosphate, sapropel and a mineral-vitamin preparation in structure of grain forage against winter rations on the basis of rich in herbs hay (5%), milk (68%), mixed fodder (20%), whole grain (7%), and also summer rations with grass and legume mixture (7%), hay (1%), milk (65%), mixed fodder (20%), integral grain (7%) makes it possible to receive daily average weight gain of calves at level 833-867 grams at expenses of forages for 1 centner of weight gain on 3,3-3,4 сentner of forage units. Introduction into rations of the protein, vitamin and mineral supplement on the basis of local protein and mineral raw materials in number of 10% per weight in structure of mixed fodder for calves at the age of 3-6 months old against the background of winter diets with haylage (28%), mixed fodder (64%), molasses (8%), as well as summer diets with grass and legume mixture (30%), mixed fodders (66%), molasses (4%) makes it possible to receive daily average weight gains of calves on 944-967grams at expenses of forages of 4,0-4,1 сentner of forage units. Feeding of 1-6 months old calves with mixed fodders with inclusion of 5-10% of protein, vitamin and mineral supplement per weight with grain high-protein crops against the background of winter and summer diets with a ratio of the deconjugate protein to the non deconjugate one - 65:35 (in control group - 71:29) instead of sunflower cake makes it possible to receive the daily average weight gain at the level of 900-927 grams at expenses of forages 3,7-3,8 сentner per forage unit. Cost of presented mixed fodders decreases on 14%, and the cost price per 1 centner gain - on 7-8%

Belarus is included into number of the leading countries of the world which provide the increasing of the expansion rates of milk production and dairy products on a per capita basis. However, the agricultural enterprises of the Republic of Belarus annually spend approximately 800 thousand tons of whole milk that makes about 20% from the general milk yield for manufacturing expenditures in the process of livestock operation. The purpose of research was working out of a new premix structure and zootechnic requirements to its use in structure of milk replacer, produced on hydrodynamic installation. The optimum doses of amino acids, vitamins and mineral substances promoted the increasing of calves daily average weight gain during the dairy period on 5,4% (788,5 g instead of 748,1 g), reducing of expenses for forages per 1 kg of weight gain - on 6,5% (2,9 fodder units against 3,1 fodder units) and the decreasing of the prime cost production for fodder expenses - on 4,7%. There was presented the composition and nutritive value of the analysed whole milk replacer. Usage of local sources of protein-fatty raw materials of plant origin, and also secondary resources of processing of whole milk in the content of milk replacer for young cattle allows to completely refuse from expensive components delivered from abroad and to lower their cost

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 diseases of newborn calves with a diarrhea syndrome are the most often registered. Application of the prebiotic preparations Biofon and Biofon-AIL to newborn calves daily with colostrum, milk or water in a dose of 20 ml within 20 days, allows to normalize intestinal digestion of an organism of young growth of calves at the expense of activization of microbiocenosis, stimulates metabolism and nonspecific resistance. Use of prebiotics allows to lower disease of young growth at Biofon application on 20%, Biofon-AIL - on 30% and to increase daily average additional weight gain of calves accordingly on 10,4% and 15,9%. Medical and preventive efficiency of application of prebiotic and probiotic preparations at enteritises at calves reaches 80-90%. Prebiotic preparations Biofon and Biofon-AIL make active nonspecific humoral immunity and exchange processes at newborn calves and can successfully be used for preventive maintenance and therapy of diseases of newborn calves with a diarrhea syndrome | У новорожденных телят наиболее часто регистрируются заболевания с диарейным синдромом. Применение пребиотических препаратов Биофон и Биофон АИЛ новорожденным телятам ежедневно с молозивом, молоком или водой в дозе 20 мл в течение 20 дней, позволяет нормализовать кишечное пищеварение организма молодняка за счет активизации микробиоценоза, стимулируют обмен веществ и неспецифическую резистентность. Использование пребиотиков позволяет снизить заболеваемость молодняка при применении биофона -на 20%, биофона-АИЛ - на 30% и увеличить среднесуточные привесы массы телят соответственно на 10,4% и 15,9%. Лечебная и профилактическая эффективность применения пребиотических и пробиотических препаратов при энтеритах у телят достигает 80-90%. Пребиотики Биофон и Биофон АИЛ активизируют неспецифический гуморальный иммунитет и обменные процессы у новорожденных телят и могут успешно использоваться для профилактики и терапии заболеваний новорожденных телят с диарейным синдромом

There was studied the ulcerous changes in a rennet stomach paries. The analysis of literary data has allowed to choose a way of reproduction of rennet stomach ulcer at calves by means of haemodynamic frustration of rennet stomach site. During experiment has been reproduced ulcer abomasit at 13 heifers. In the course of work the young growth of black-motley breed at the age of 1-2 months has been involved. Before operation to calves neuromuscular relaxant Rometar intramuscularly was entered. Then alcoholic narcosis on M.V.Plakhotin intravenously was entered. Belly cavity on a white line of stomach, receding from chondroxiphoid cartilage on 4-5 cm, was opened. A cut in length 10-12 cm was done. Through the formed aperture rennet stomach was taken, then on the big curvature gastroepiploic artery was found, into which by medical syringe through an insulinic needle was entered warmed up to 38 deg C the 8-% solution of sulfosalicylic acid in a dose of 5 ml. Changes from a serous cover of rennet stomach observed at once after introduction of acid solution. At first on an artery course rough spastic reductions of rennet stomach muscles have been noticed. After that, in the same place, there was anaemia of serous cover, then, stagnant hyperaemia. For the control of results in 3-5 weeks made the compelled slaughter of calves with the diagnostic purpose and found out rennet stomach ulcers of various size. Result of the given work is that the given method gives the chance to reproduce haemodynamic rennet stomach ulcer at calves of any age by means of 8% solution of sulfosalicylic acid. Thus, the experimental model of rennet stomach ulcer at the calves, caused by introduction of 8% solution of sulfosalicylic acid, is in the main similar to spontaneous disease. | Целью экспериментальной работы явилось изучение ульцерозных изменений в стенке сычуга. Анализ литературных данных позволил выбрать способ воспроизведения язвы сычуга у телят посредством гемодинамических расстройств участка сычуга. Во время эксперимента был воспроизведен язвенный абомазит у 13 телочек. В процессе работы был задействован молодняк крупного рогатого скота черно-пестрой породы в возрасте 1-2 месяцев. Перед операцией телятам вводили внутримышечно миорелаксант Рометар. Затем вводили внутривенно алкогольный наркоз по M.B. Плахотину. Брюшную полость вскрывали по белой линии живота, отступая от мечевидного хряща на 4-5 см. Делали разрез длиной 10-12 см. Через образовавшееся отверстие извлекали сычуг, затем находили на большой кривизне желудочно-сальниковую артерию, в которую шприцом через инсулиновую иглу вводили подогретый до 38 deg С 8-процентный раствор сульфосалициловой кислоты в дозе 5 мл. Изменения со стороны серозной оболочки сычуга наблюдали сразу же после введения раствора кислоты. Сначала по ходу артерии были замечены бурные спастические сокращения мышц сычуга. После этого, там же, возникала анемия серозной оболочки, затем, застойная гиперемия. Для контроля результатов через 3-5 недель производили вынужденный убой телят с диагностической целью и обнаруживали язвы сычуга различной величины. Результатом данной работы является то, что данный метод дает возможность воспроизводить гемодинамическую язву сычуга у телят любого возраста при помощи 8-процентного раствора сульфосалициловой кислоты. Таким образом, экспериментальная модель язвы сычуга у телят, вызванная введением 8-процентного раствора сульфосалициловой кислоты, в основных чертах сходна со спонтанным заболеванием.

Development principal cause antenatal oligotrophy at young animals are infringements of feeding norms of pregnant animal, exchange processes and, as consequence occurs hypoxia and fetus toxicosis. Congenital oligotrophy at calves is accompanied hypoplasia of many vital bodies and systems, especially digestive and immune that is shown by secondary immune insufficiency which aggravates age immune deficiency. Decrease in immune reactance, in turn, oppresses erythropoiesis, arise gastroenteric pathology, and the current oligotrophy is aggravated. The work purpose is to study structurally functional features of spleen, lymph nodes, thymus and abomasum at newborn calves with signs of antenatal hypoplasia, arising at unsatisfactory feeding and the maintenance of pregnant dry cows. During research it is established, that structurally functional changes of bodies have been found out in the deadborn and fallen calves in the first 7 days with various degree of antenatal hypoplasia of immunogenesis which testify to morphological immaturity and changes typical for phases of accidental transformations. During the same period occurs active morphogenesis of abomasum tissular components at hypotrophic calves which has the features that it is necessary to consider at the organization of feeding and young animals cultivation. Growth and development degree of lymphoid structures and calve abomasum closely correlating with the morphofunctional status of their organism. | Основной причиной развития антенатальной гипотрофии у молодняка являются нарушения норм кормления беременных животных, обменных процессов и, как следствие, происходит гипоксия и токсикоз плода. Врожденная гипотрофия у телят сопровождается недоразвитием многих жизненно важных органов и систем, особенно пищеварительной и иммунной, что проявляется вторичной иммунной недостаточностью, которая усугубляет возрастной иммунный дефицит. Снижение иммунной реактивности, в свою очередь, угнетает эритропоэз, возникают желудочно-кишечная патология, и усугубляется течение гипотрофии. Цель работы - изучить структурно-функциональные особенности селезенки, лимфатических узлов, тимуса и сычуга у новорожденных телят с признаками антенатального недоразвития, возникающие при неудовлетворительном кормлении и содержании стельных сухостойных коров. В ходе исследований установлено, что у мертворожденных и павших в первые 7 суток телят с различной степенью антенатального недоразвития были обнаружены структурно-функциональные изменения органов иммуногенеза, которые свидетельствуют о морфологической незрелости и изменениях, типичных для фаз акцидентальной трансформации. В этот же период происходит активный морфогенез тканевых компонентов сычуга телят-гипотрофиков, который имеет свои особенности, что необходимо учитывать при организации кормления и выращивания молодняка. Степень роста и развития лимфоидных структур и сычуга телят тесно кореллирует с морфофункциональным статусом их организма.

Analysis of the efficiency of application of fermented milk supplementary feed DKM (Belarus) produced on the basis of bacteria strain Lactobacilus acidophilus 55/06 in calve diets was realized in the conditions of the Republic of Belarus. Influence of feeding with acidified with the trial milk additive on forage palatability, biochemical blood structure and calve productivity was studied; economic efficiency of DKM use for processing of whole milk and its use in rations of calves was defined. Experimental batches of DKM fermented milk supplementary feed were produced at Grodno Medical Preparations Plant (Belarus). It was issued in the sterile corked polyethylene 5, 10 and 20 liter bottles or canisters. The fermented milk supplementary feed DKM could be stored at the temperature from 0 deg С up to 15 deg С. Shelf-life – 3 months from the moment of production. The additive represents the homogeneous mass of viscous consistence of cream color of various shades with a sour-milk smell. The carried out economic calculations showed, that as a result of growing capacity increase it animals of a trial group and reception of an additional total live weight gain there was stated the 6,5% decrease of expenses for fodder unit production in the experimental group. However, due to a high cost of acidified milk the cost of fodder unit in trial group was on 6,8% higher. As a result, the cost price of 1 kg weight gain in trial group (despite high additional weight gains) was stated at the level of control group. Application of fermented milk supplementary feed DKM in calve diets made it possible to lower calf disease incidence and to increase calf productivity on 11,8% without increasing the cost price of production

Balanced complete feeding proved to be one of the major conditions of animal productivity increase and improvement of their reproductive qualities. Full value of feeding could be obtained at the expense of forage quality improvement and perfection of structure of the rations providing the increasing of metabolic energy use by breeding bull-calves. Analysis of the efficiency of metabolic energy use by the replacement bull calves under conditions of various sugar and protein ratio was realized in the Republic of Belarus. Research results showed that enrichment of replacement bull calves (with 325-405 kg of live weight) rations with easy digestible carbohydrates (sugar and starch) in ratio of 32% from a dry matter ration, including 15% of stable starch made it possible to increase the transformation of metabolic energy into energy of body weight gain on 21,73 - 23,96 MJ or on 10,3%, that as a result correspondingly increased the daily average weight gains on 7,9% and reduced the expenses for forage energy for 7,1% counting on an energy unit. According to the ejaculate volume indices the bull calves of the second experimental group surpassed analogues of a control group on 14,8%, and according to sperm concentration indices - on 12%. The average quantity of the frozen doses of sperm has made 65%