Disinfection of environmental objects with highly effective disinfectants is a reliable and effective means of preventing the occurrence of outbreaks of infectious and parasitic diseases. The purpose of our work was to determine the disinfection properties of modern disinfectants based on the test culture of Toxocara canis helminths and to establish the optimal modes of their use. It has been proven that an aldehyde disinfectant containing didecyldimethylammonium chloride (2.25%), benzalkonium chloride (8.0%), glutaraldehyde (15.0%), phosphoric acid, nonionic surfactants, water exhibits disinvasive activity against test cultures of Toxocara canis eggs at a concentration of 2.0-4.0% at a temperature of 20±0.5°C and an exposure of 3-24 hours, and the ovocidal efficiency is from 90.60% to 99.70%. Aldehyde disinfectant can be used for disinfection of soil (black earth, sandy loam, loamy) contaminated with Toxocara canis eggs, at a concentration of 4.0% at 6:00 exposure and a consumption rate of 3000 cm3/m2. Chlorine agent, contains dichlorantin, dimethylhydantoin (12.4-16.4%), dispersant (9.0-12%), nonionic surfactants, corrosion inhibitor, filler exhibits disinvasive activity against Toxocara canis test culture in a concentration of 3.0-4.0% with an exposure of 3-24 hours, and the ovocidal efficiency in this case ranges from 97.40% to 98.82%. The chlorine agent is effective for soil disinfection only at a depth of up to 2 cm at a concentration of 4.0% at a consumption rate of 1000 cm3/m2 and an exposure time of 24 hours.

Кафедра технічних систем та технологій тваринництва Харківський національний технічний університет сільського господарства ім. Петра Василенка проспект Московський, 45. м. Харків, Україна, 61050Анотація. У статті представлено результати з визначення рівня мікробної контамінації м'яса забійних тварин та птиці в процесі його технологічної переробки. Визначено, що кількість МАФАнМ та бактерій родини Enterobacteriaceae на поверхні туш яловичих варіює протягом робочого часу. Найнижче значення МАФАнМ реєст-рують після початку роботи забійного цеху -(2,85±0,03)×10 3 КУО/см 2 , а найбільше значення реєструють під час за-бою у другу половину робочого часу на ділянці нутрування туш -(5,6±0,06)×10 3 КУО/см 2 . Бактерії родини Enterobacteriaceae займають вагоме місце в складі загальної кількості бактерій, які контамінують контактні поверхні яловичих туш. Середня кількість МАФАнМ в повітрі на дільниці забою та переробки птиці наприкінці робочої зміни перевищує встановлену норму у 3,3 рази, та не відповідає встановленим нормам у камері охолодження. На всіх ділян-ках первинної переробки м'яса птиці в пробах-змивах виявляли бактерії групи кишкової палочки. Причиною незадо-вільного санітарно-гігієнічного стану туш може бути порушення виробничої санітарії. Препарат «П3-оксонія актив 150», до складу якого у якості діючих речовин входить надоцтова кислота та перекис водню, забезпечує повне зни-щення мікроорганізмів на поверхні тушок курчат-бройлерів при використанні 0,03 % розчину засобу за експозиції 30 хвилин, а також забезпечує мікробіологічну стійкість продукції протягом 9 діб.Ключові слова: яловичина, м'ясо птиці, мікробна контамінація, МАФАнМ, П3-оксонія актив 150, м'ясопереробне підприємство. Abstract. Nowadays, because of introduction the system of management with safety the food products at enterprises of food industry the problem of microbiological safety of readymade products is one of the vital tasks in the modern meat and poultry processing industry. The risk of meat products contamination by pathogenic microorganisms in their industrial production stipulates the necessity search of measures and technologies that ensure its reduction. Up today as an alternative to chlorine, the most effective means is peracetic acid. The purpose of the work was carrying out researches of level beef and poultry meat contamination during the technological cycle of slaughter and processing, detecting the effectiveness of modern disinfectant use. CONTAMINATION OF ANIMALS AND POULTRY MEAT AND MEANS OF ITS REDUCTIONThe article presents the results in determination of level microbial contamination of slaughter animal and poultry meat while its processing. It is carried out that the amount of MAFAnM and bacteria of Enterobacteriaceae family on the beef surface carcasses varies during the working hours. The lowest value of MAFAnM is recording after starting operation of the slaughter shop -(2,85±0,03)×10 3 CFU/cm 2 , and the highest value is recording at the second half of working time at evisceration carcass body -(5,6±0,06)×10 3 CFU/cm 2 . Ba...

The main objectives of the research were such: to define the concept of cold chain as an object of legal regulation; to find out the content and features of the EU legislation on the safety and quality of meat and meat products during cold chain and its use in Ukraine; to characterize the legal bases of the current legislation of Ukraine on ensuring the safety and quality of meat and meat products during cold chain, to formulate proposals and recommendations aimed at improving the national legislation of Ukraine by approximating it to the EU legislation, which sets requirements for the safety and quality of meat and meat products throughout cold chain. To achieve the abovementioned objectives, the following methods were used: comparative legal, analytical, systemic, dialectical, generalizing, specific-search, structural-functional, semantic, methods of deduction and induction, etc. The content and features of the legal regulation of the safety and quality of meat and meat products in the current legislation of the European Union and Ukraine have been clarified. For the first time, the definition of the term 'cold chain' has been proposed by reference to it in author's editorial, which should influence its clearer scientific and practical understanding. It is determined that the temperature regimes of cold processing, storage and transportation of meat and meat products in Ukraine are regulated by a large number of legal acts, in particular: national standards of Ukraine (DSTU), technical regulations, technological instructions, rules of transportation, etc. It is found that national legal acts do not provide a systematic understanding of the particularities of cold chain legal regulation in the meat processing industry in order to ensure the safety and quality of meat and meat products. As a result of departmental inconsistency, the existing storage temperature parameters for the same product type in different legal acts differ from each other, which does not allow to determine the actual storage periods at different stages of the cold chain. In addition, current legal acts in Ukraine do not provide for constant monitoring of the temperature of cold-processed meat and meat products throughout all cold chain units and the hygienic condition of refrigerators throughout the shelf life. As a result, the cold chain is very difficult to be controlled and requires a large number of factors to be taken into account in order to bring safe and high-quality meat and meat products to the end consumer. According to the results of the research, proposals and recommendations are formulated to improve the national legislation of Ukraine governing the cold chain in the meat processing industry.

The purpose of these studies was to analyse and compare the content of bromine in samples of chicken eggs, feed, and water from different regions of Ukraine in the dynamics of 2016 – 2020: with an increased risk of bromine in products (Kharkiv, Poltava, Dnipropetrovsk and Mykolaiv regions) and outside the risk zone (Volyn, Vinnytsia and Zaporizhzhia). Studies of bromine content in eggs, feed, and water were performed in the laboratory of toxicological monitoring of the National Scientific Center "Institute of Experimental and Clinical Veterinary Medicine" (Kharkiv) using X-ray fluorescence analysis. As a result of the conducted researches, the increase of the bromine content in chicken eggs in the dynamics of 2016 – 2020 was established: the bromine content increased regardless of the region of the poultry farm location. The highest bromine concentration in chicken eggs was found in Kharkiv, Dnipropetrovsk, Mykolaiv, and Zaporizhia regions. Bromine source in poultry products is the excessive intake of bromine in the poultry body with alimentary environmental factors (feed and water). Bromine content in feed for chickens increased in the research dynamics (from 35.1% in the Poltava region to 2.5 times in the Zaporizhzhia region). It exceeded the established EFSA (4.4% of the total) and the average in Ukraine (51.2% of the total number of samples). In addition, the average bromine content in feed from poultry farms of the studied regions of Ukraine correlated with the number of registered and approved bromine-containing pesticides. The average bromine concentration in water sources in the studied regions of Ukraine had no significant differences compared to the beginning of the study but exceeded the maximum allowable concentration by 21.7% in 2016, 34.8% in 2018 and 39.1% in 2020. The maximum bromine concentration was in water sources in Mykolayiv, Kharkiv, and Dnipropetrovsk regions.

At this juncture, more and more attention is drawn to the preservation of the gene pool of local breeds of poultry, which have a set of valuable features, including high-quality eggs. In this study, the quality parameters of eggs (egg weight, weight, and proportion of yolk, weight, and proportion of albumen, yolk-albumen ratio, energy value, lipid and fatty acid content in the yolk) of chickens of Ukrainian selection(such hybrids as Plymouth white, Poltava Clay, Birkivska Barvysta and their interbreed hybrids) and foreign commercial crosses (Tetra SL, Tetra H, Super Harko, Lohmann Brown, Highsex White and Brown, High Line W36), at different ages (26, 34, 44 weeks of age) were studied in the comparative aspect. The average egg weight of Ukrainian breeds and hybrids was 51.9 g, 56.5 g, and 61.2 g at the age of 26, 34, and 44 weeks, respectively, in foreign crosses it was much higher - 59 g, 61.2 g, and 64.5 g, respectively (p <0.01). At the same time, there was a probable advantage of the Ukrainian selection bird over the foreign selection bird in the proportion of yolk (by 4.3%, 2.9%, and 4.1% at the age of 26.34 and 44 weeks, respectively), the yolk-albumen ratio (by 0.12, 0.07 and 0.08, respectively) and the energy value of the egg (76, 48 and 60 kJ, respectively). Higher lipid content was found in the egg yolks of domestic chickens in comparison with the foreign hybrid Tetra SL. The total content of saturated and unsaturated fatty acids in the egg yolks in hens of local breeds is higher than in foreign cross. High-quality characteristics of eggs of local breeds and populations are evidence of the presence of a valuable set of genes that require comprehensive study, preservation, and use in the creation of new selectively significant forms.