Chlamydophila abortus (C. abortus) is one of the most important causative agents of enzootic abortion which has been caused a serious economic problem in domesticated and wild ruminants world wide. This study was aimed to diagnose C. abortus infection in aborted goats in Ras Suder Research Station (South Sinai) - Desert Research Center from 2004-2006. Twenty aborted cases from 130 pregnant nannies were recorded and examined serologically using complement fixation test (CFT). Eighty percent (16/20) of the aborted cases were serologically positive and 20% (4/20) randomly collected from apparently healthy pregnant nannies were also had antibodies against C. abortus. Pathological lesions were detected. Ten aborted fetal samples from serologically positive aborted nannies were subjected to diagnosis using Polymerase Chain Reaction (PCR) showed positive results at 119 bp. According to this result, PCR proved to be feasible, reliable, specific and sensitive diagnostic tool in diagnosis of C. abortus infection.

The objective of this study was to investigate the changes in synovial fluid concentration of collagen type II cleavage site (C2C) and pro collagen II C-propeptide (CPII), markers of joint cartilage degeneration and synthesis, respectively, in horses with intraarticular fracture or osteochondrosis dissecans (OCD), and to examine the relationship between arthroscopic findings and these biomarker levels. Synovial fluid was collected from 36 joints in 18 horses (6 fractures and 12 OCDs). Samples from contralateral normal joints, when available, served as controls (n=12). Concentrations of C2C and CPII were measured using enzyme-linked immunosorbant assays. Moreover, the severity of the cartilage degradation was graded arthroscopically in 16 horses, and the correlation between the C2C and CPII levels and the arthroscopic scores were investigated. Compared to the control, the concentration of C2C was increased in OCD joints but not in fracture joints, whereas the concentration of CPII was increased in fracture joints but not in OCD joints. Within each disease group there was no correlation between biomarker levels and arthroscopic findings. Therefore, although C2C and CPII have diagnostic potential further knowledge is required to provide accurate analysis.

A study was carried out in 2161 quarter milk samples of 550 cows in Durg district Chhattisgarh. Out of 550 animals, 385 (70%) animals were found to be positive for sub clinical mastitis (SCM) by Modified White Side Test (MWST), 432 (78.54%) by Modified California Mastitis Test (MCMT) and 462 (84%) by somatic cell count (SCC). The quarter wise prevalence of sub clinical mastitis was 47.99%, 55.25% and 60.90% by MWST, MCMT and SCC respectively. Prevalence of blind teats was 1.77%. prevalence was highest during second and third lactations and at 5 and 6 years of age. Infection rate was higher during early and late stages of lactation. HF and Jersey cross bred cows were more susceptible than indigenous cows. Microorganisms isolated were predominantly Staphylococci. ABST revealed sensitivity to cefotaxime whereas most of the isolates were resistant to ampicillin.

In the conditions of the Republic of Belarus there were studied the biochemical changes in blood of cows with chronic dystrophic processes in liver by an example of fatty hepatodystrophy. There was given an estimation of these changes taking into account animal physiological state (pregnancy). The metabolic profile including the enzymatic block from aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, cholinesterase, serum albumin, total cholesterin, total bilirubin and thymol test can be used in clinical and biochemical diagnostics in case of hepatic steatosis. Its changes in case of hepatic steatosis were characteriszed by increase in activity of aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, decrease in activity of cholinesterase, decrease in blood serum of albumins concentration, increase in general cholesterol and high values of thymol tests. Determination of gamma-glutamyl transpeptidase influence and flocculation test on apo-beta-lipoproteins showed that they should not be included in this complex due to their small information content. In the process of estimation of changes of a metabolic profile of blood serum it wasnecessary to consider the physiological state of animals (pregnancy) because the activity of some enzymes and metabolite concentration at them could essentially differ. Taking into consideration the character of hepatic steatosis course, the studied metabolic profile can be recommended for hyposthenic current chronic activity with the considerable involvement degree of hepatocytes into the process.

Data confirming a significant influence of potato (Solanum tuberosum) variety on increasing the efficiency on potato growing was analyzed in the conditions of the Republic of Belarus. A method for erythrocyte fixation intended for hemagglutination inhibition test through the use of 50% solutions of formalin (the identical volume of the isotonic solution of sodium chloride was added to 40% solution of formaldehyde). Fixing of erythrocytes was spent at room temperature within 48 hours with the subsequent six-fold washing up by their sterile isotonic solution of sodium chloride by means of centrifuging. Stabilized by the presented method erythrocytes were stored at 4 deg С up to one year (supervision term) in course of which they were completely suitable as a component of reaction with preservation of its sensitivity and specificity. Thus, as a result of realized research there were made the following conclusions: for fixation of erythrocytes, intended for statement of hemagglutination inhibition test it was possible to use a solution of formaldehyde. Fixed in such a way erythrocytes preserved the capability for hemagglutination by influenza virus in the hemagglutination inhibition reaction in course of one year. Arrangement of hemagglutination inhibition reaction by means of application of fixed erythrocytes made it possible to realize an authentic serological diagnostics of pig influenza. | Способ стабилизации эритроцитов, предназначенных для постановки реакции задержки (торможения) гемагглютинации, основан на фиксации полученных из крови эритроцитов равным объемом 50%-ного раствора формалина (к 40%-ному раствору формальдегида добавляют одинаковый объем изотонического раствора натрия хлорида). Фиксация эритроцитов проводится при комнатной температуре в течение 48 часов с последующим шестикратным отмыванием их стерильным изотоническим раствором натрия хлорида путем центрифугирования. Стабилизированные таким образом эритроциты хранят при 4 градусах по Цельсию до одного года (срок наблюдения), в течение которого они полностью пригодны в качестве компонента реакции с сохранением ee чувствительности и специфичности. Таким образом, в результате исследований сделаны следующие выводы: Для фиксации эритроцитов, предназначенных для постановки реакции задержки (торможения) гемагглютинации возможно использование раствора формальдегида. Фиксированные таким образом эритроциты сохраняют способность к гемагглютинации вирусом гриппа в реакции задержки гемагглютинации в течение одного года. Постановка реакции задержки гемагглютинации с использованием фиксированных эритроцитов дает возможность достоверной серологической диагностики гриппа свиней.

In the conditions of the Republic of Belarus there was realized a determination of an optimal time for cow insemination with the help of oestrus detector by Draminsky's method. In course of the experiment there were used black-and-white nonpregnant cows at the stage of oestrus (sexual heat). In course of the study there were used clinical, biochemical and hematological research methods. Dynamics of changing of estrous cycle slime depending on a day of sexual cycle was analyzed. Indexes of the reproductive function of cows in experimental and control groups were compared. Research results showed that revelation of cows with oestrus with the help of oestrus detector by Draminsky's proved to be efficient and informative. Insemination of animals at the stage when the resisting of oestrus mucilage after the minimal indexes (180-200) rose sharply up to the indexes 300-320 proved to be efiicient. This made it possible to realize single insemination of animals.