The present study reports the concentration of Copper, Zinc, Iron and Manganese in the blood plasma of male kutchi camels during their breeding season. The respective concentrations of the plasma trace minerals were 112.94 ±O.44, 105.65±2.08, 117.65±1.72 and 160.29±0.75 µ/dl.

This study was designed in order to clarify the effect of ethanol drinking on the mineral contents on liver, kidney, muscle and hair. Forty-five rats were divided into 2 groups and a control group. The control group received tap water and the other 2 groups were given 8 % and 40 % ethanol as drinking source. Liver, kindney, muscle and hair samples were taken and analyzed for zinc, calcium and copper contents by atomic absorption spectrophotometric methods. The zinc content of muscle showed significant (P0.01) decrease in both groups. The calcium content of hair showed significant (P0.1) increase in 8 % ethanol group. The copper contents of kidney and muscle in 8 % ethanol group and liver in 40 % ethanol group showed significant (P0.1) decrease

Determination of the influence of new premixes on sperm quality and natural resistance of sire bulls during winter and summer periods was realized in the conditions of the republic of Belarus. Application of the developed vitamin and mineral additive in rations of sire bulls in course of winter and summer periods made it possible to increase their natural resistance, that was proved by the 7,2-8,8% increasing of the bactericidal activity of blood serum indicators, 0,6% increasing of lysozymic activity of blood serum, and 3,3-5,1% increasing of the phagocytic ability of leukocytes. There was determined the possibility to increase sire bull sperm quality during different year periods by means of application of the enhanced doses of vitamins and trace elements. As a result, the ejaculate volume increased on 7,4-2,4%, concentration of male germ cells in ejaculate on - 6,3-7,8%, sperm activity - on 6,7-7,3%, and also there was stated the decrease of spoilage percent of sperm production. Results of the industrial testing have confirmed efficiency of use of the recommended vitamin and mineral additive and calculated on its basis premixes. Its application made it possible to increase the quality of bull of sperm production on 3,6-10,8%

There were studied the veterinary-sanitary indicators of sheep slaughter products in the conditions of application of microcelements in various forms. Studying of the influence chelate forms of microelements on quality of cattle-breeding production is spent in comparison with preparations in which microelements are in a kind of salts. As a model preparation, for studying of chelate influence on quality of cattle-breeding production used of the chelate zinc form - Tsinkovet. Results of research show, that use of chelate and inorganic forms of zinc does not reduce high quality of received production. Meat of sheep of trial groups on organoleptic, bacteriological and physical and chemical indicators, and also biological value and harmlessness is characterized as good-quality and corresponds to veterinary-sanitary requirements. In tables results of physical and chemical researchs of meat, its biological value and harmlessness are presented. | Целью исследований явилось изучение ветеринарно-санитарных показателей продуктов убоя овец при назначении им микроэлементов в различных формах. Изучение влияния хелатных форм микроэлементов на качество животноводческой продукции проведено в сравнении с препаратами, в которых микроэлементы находятся в виде солей. В качестве модельного препарата, для изучения влияния хелатов на качество животноводческой продукции использовали хелатную форму цинка - Цинковет. Результаты исследований показывают, что использование хелатных и неорганических форм цинка не снижает доброкачественности получаемой продукции. Мясо овец опытных групп по органолептическим, бактериологическим и физико-химическим показателям, а также биологической ценности и безвредности характеризуется как доброкачественное и соответствует ветеринарно-санитарным требованиям. В таблицах представлены результаты физико-химических исследований мяса, его биологическая ценность и безвредность.

In the conditions of the Republic of Belarus there was determined the efficiency of application of different levels of vitamins and trace elements in feeding of servicing bulls. In course of the study there was analyzed the influence of different levels of supply of servicing bulls with vitamins A, D, E and trace elements (copper; zinc; manganese; iron; cobalt; selenium) on their reproductive ability. On the basis of the experiment there was calculated the economic efficiency of application of the developed vitamin and mineral additive. Research results showed that application of the developed protein and mineral additive in diets of servicing bulls in winter and summer periods made it possible to increase the ejaculate volume on 7,4% and 12,4% (P less than 0,05), sperm activity on 6,7 % (P less than 0,05) and 7,3% (P less than 0,01), concentration of spermium in ejaculate on 6,3% and 7,8% (P less than 0,05). Also, it promoted the lowering of percentage of defective sperm doses.

Investigation of acute and subchronic (chronic) toxicity of complexinates of trace elements in experiments with calves was realized in the conditions of the Republic of Belarus. The realized experiments were based on developed in Belarus veterinary preparations for the treatment and prevention of diseases connected with disorders of trace elements exchange containing chelate compounds of trace elements with sodium ethylene diamine acetate: Cuprovet (on the basis of CuNa); Cobalvet (on the basis of CoNa), Zinkovet (on the basis of ZnNa), and Feravet (on the basis of FeNa). There were the following indexes of ferrum in nephros - 55,3 +/- 2,26, in muscles - 134 +/- 26,6 mkg/g, and in liver - 565 +/- 35,5 mkg/g after administration of Feravet. There were the following index of zinc in nephros - 56,3 +/- 2,64, in muscles -25, 8 +/- 1,23 and in liver - 84,4 +/- 3,29 mkg/g after administration of Zinkovet. There were the following indexes of cuprum in nephros - 4,1 +/- 0,325, in muscles - 2,33 +/- 0,117, and in liver - 12,3 +/- 1,12 mkg/g after administration of Cuprovet. There were the following indexes of cobalt in nephros - 40,35 +/- 2,29, in muscles - 12,5 +/- 0,98, and in liver - 126,5 +/- 10,45 ng/g after administration of Cobalvet. Parameters of toxicity of all preparations were by the example of laboratory mice, rats and calves given. Content of trace elements in blood of calves in dynamics of the experiment was analyzed. There were determined parameters of acute toxicity of the analyzed preparations: they all could be referred to substance hazard category 4 (low-hazardous substances). The determined parameters of acute toxicity made it possible to recommend them for treatment and prophylaxis of microelementoses of cattle, as well as to use them as feed additives taking into consideration that defect action levels of the analysed preparations exceed the deficiency needs of cattle in case of their limited cumulation

Research on working out of a new fodder additive on the basis of rape (Brassica napus) phospholipids which included mineral substances necessary for normal functioning of cattle was realized in the conditions of the Republic of Belarus. Results of biochemical analysis of 35240 blood samples revealed that 15-40% of studied animals had abnormalties in vitamin, protein and mineral metabolism and lowering of immunobiological disease resistance. There was correlation dependence between the degree of metabolic orders and the state of forage reserve of a forage reserve. The lowering of forage reserve caused the increasing of metabolic disorders. As a whole forages of the surveyed farms were low in content of copper, zinc, cobalt and selenium and could not provide physiological requirements of animals without introduction into rations of specialized additives