The problem of integrated protection of keratin-containing materials against larval forms of keratophagous insects has not lost its signi cance for many years. The article presents the results on the selection of the component composition and determination of the main quality indicators of a new avermectin-containing insecticide to control keratophagous insects (Tineola bisselliella (Humm.), Attagenus smirnovi Zhant) that damage feather raw materials - valuable keratin-containing secondary product of the poultry processing industry. The avermectin-containing insecticidal agent contained various avermectin-containing substances as an active substance - the complete avermectin complex produced by S. avermitilis-56 strain, abamectin, ivermectin and avermectin B1a hemisuccinate. During storage of avermectin-containing insecticidal agent based on the used active substances such quality indicators of experimental agent samples as appearance, smell, hydrogen index, extractable volume, microbiological purity as well as stability in terms of biocidal activity were determined. In the course of studies it was found that in terms of biological activity against oligochaetes, stability during storage and main quality indices, the leading position among the main four analyzed is occupied by avermectin-containing insecticide based on abamectin or avermectin B1a hemisuccinate, which is a semi-synthetic derivative of abamectin

It was found that trematode invasions (genus Fasciola, genus Dicrocoelium), parasitizing in the bile ducts of the liver, dominate in private farms. Feedback was noted on the infection of cattle with protozoal invasions. Also in private farms, infection by representatives of the genus Eimeria was 11.9 %, and cryptosporidium was 5 % higher. In peasant farms, a significant increase in the infestation of animals with intestinal coccidiosis was observed. e increased exploitation of agro-industrial complexes leads to unsanitary conditions for keeping newborn animals and, as a result, high contamination of oocysts of intestinal protozoa, as well as crowded content, the lack of timely and effective measures to combat protozooses of cattle are reflected in the maximum extensiveness (82.7 %) and intensity (36.4 ± 2.9 ind/head in 1 g of faeces). Unsatisfactory conditions for keeping animals in the farms are reflected in the maximum infection of the herd with geohelminths of the suborder Strongylata, 67.3 % and 64.8 %, respectively, which is almost 5 times lower compared to animals belonging to the private sector, with in this case, the number of eggs in 1 g of faeces is 18.5 ± 1.4.

Kyphosis in dogs is an abnormal dorsal curvature of the spinal column, which is a spread consequence of congenital malformations of the vertebrae, and also directly connected with of recurrent and progressive diseases of the spinal cord. is pathology characterized multifactoriality with the presence of dinamic and statistic factors, including vertebral instability, subluxation of the vertebrae and stenosis of spinal canal. Early, in kyphosis of the spinal column, all operations were performed using dorsal laminectomy or hemilaminectomy, and all structures, namely wires, screws, were introduced dorsally through the vertebral arches in their bodies. Each of previously described methods of surgical intervention is a variant of dorsal or dorso-lateral implantation, which was accompanied by the occurrence of di cult situations. In this regard, the aim of this study is to improve the methods of correction of kyphosis deformities in dogs. e study were involved 18 dogs of small and medium breeds under the age of 1 year. 8 dogs were operated on by dorsal laminectomy metod using a screws and polymethyl methacrylate (or bone cement) and 10 dogs were operated by transthoracic stabilization metod. As a result of the studies, data were found that the method of transthoracic xation of the spinal column is much better then methods described earlier, since when using this method, the installation of metal structures is more durable, also there is less risk of spinal cord injury, because the procedure takes place without access to the spinal canal.

Cat dermatites is registered in Stavropol in all seasons of the year with an incidence of 8.4 % of the total number of dermatological patients. In 2021, the following skin pathologies in cats were registered at a dermatological appointment: parasitic diseases (afanipterosis, otodectosis, notoedrosis, cheilitiellosis, demodicosis); dermatophytosis (microsporia); allergies ( ea allergic dermatitis, atopic skin syndrome, food hypersensitivity); autoimmune skin pathologies (pemphigus foliaceus); skin neoplasms (mastocytoma, squamous cell carcinoma); viral dermatoses (herpesvirus, calicivirus, feline viral immunode ciency, feline viral leukemia); psychogenic causes (feline behavioral ulcerative dermatitis). e leading position in the etiology of cat dermatitis is occupied by parasitic diseases, allergies, fungal skin lesions and viral dermatoses. Of the 65 cases of allergy, 52 cases of ea allergic dermatitis of cats were registered, which corresponds to 80 % of the total number of those who applied with allergies, 11 with atopic skin syndrome, which corresponds to 16.9 % and 2 cats with food hypersensitivity, which corresponds to 3.1 % of the total number of dermatological patients. Are most often registered at the reception cats of breeds are Sphynx, Abyssinian, Bengal, Siamese, Maine Coon, Persian.

The timing of the formation of immunological reactivity of piglets, which was studied by the method of producing anti-erythrocyte antibodies during alloimmunization, is discussed. It has been established that the immune system of piglets up to 45 days of age produces anti-erythrocyte antibodies in low titer, at the age of 2-4 months it is weakly reactive. A higher incidence and mortality of piglets (death and forced slaughter) were established in the first days and months of their life. With the enlargement of farms, despite the usefulness of the diet, the incidence and mortality of piglets increases. According to the accumulated materials, diseases of piglets cannot be explained only by inadequate feeding and care of pregnant sows. In this regard, the study of the patterns of formation of general resistance and the immune system of young animals, as well as the factors in uencing them, is of great importance. There is little information on the formation of immunological protective levers in piglets on the largest pig farms. According to the indicators of some authors, the immunological maturation of piglets is completed by 2 months of age, according to others, by 4 months. is inconsistency of information indicates that the question of the time of maturation of the immunological defense system in piglets has not been fully studied. However, the solution of this issue would make it possible to establish the most right terms for the transfer of piglets to additional complexes for breeding pigs

Nutrients in meat from Mongolian livestock is various and one of them is conjugated linoleic acid (CLA) in meat. CLA is a name of components which are geometrical and organizational isomers (c18:2) of linoleic acid. Recently, there are over 30 isomers of CLA. Two isomers (cis-9, trans-11 and trans-10, cis-12) of them have great importance in health and these 2 isomers are 80 percent of all isomers. CLA is produced by isomerization and biohydrogenation processes of rumen bacteria in ruminants. e CLA content of Mongolian goat meat and beef was determined using gas chromatography in accordance with animal age and meat location. Meat CLA content was 7.5 mg/g in 2-year old goat and 6.4 mg/g in adult goat. In 2-year old goat, CLA content was highest in front leg muscle (8.8 mg/g) and lowest in hind leg muscle (6.5 mg/g). In cattle, CLA content was 5.36-5.86 mg/g in muscle tissue and 6.0-7.3 mg/g in subcutaneous fat. Among muscle tissues, CLA content was higher in backstrap and hind leg muscle, and lower in front leg muscle

The work is devoted to the influence of a new vitamin-mineral feed additive on the bees. During its development, we used some new approaches aimed at increasing the bioavailability of vitamins and microelements, and also at solving the problem associated with the occurrence of undesirable chemical reactions between substances. At the same time, the potential possibility of physiological (biochemical) antagonism or synergism of the substances used was taken into account. e feed additive consists of two parts having different composition and assigned to bees separately. e aim of the work was to compare the safety for bees of the proposed feed additive and feed additive with the same content of nutrients, vitamins, macro- and microelements, but without separation of the components. e study was carried out using of cage- tests using generally accepted methods. e dynamics of death and the average life expectancy of bees in the bee cages were studied. The studied feed additives were fed to the bees together with sugar syrup for 8 days. An increase in the average life expectancy of bees that received a new feed additive compared to bees that received a feed additive without separation of components by 1.4 and 1.5 times, respectively, was revealed

The article presents the taxonomic diversity of helminths of the introduced domestic reindeer (Rangifer tarandus) on the island Bering. Animal faeces (42 pcs.) were collected in the autumn 2021. Faeces were studied by coprohelminthic-, -larvo-, and -ovoscopy methods, followed by the study of the morphology and morphometry of found helminths (at various stages of their development), as well as by molecular phylogenetic methods (sequencing of the ITS2 region). We have identified parasitic worms belonging to two classes (Nematoda and Cestoda) and seven genera (Nematoda: Ostertagia, Trichostrongylus, Nematodirus, Nematodirella, Capillaria, Dictyocaulus; Cestoda: Moniezia). By molecular phylogenetic methods, the systematic position of two of them was refined to species: N. longissimispiculata and O. gruehneri (O. arctica), a dimorphic species. Invasion extensity was 69.05 % for gastrointestinal strongylids; 2.38 % for dictyocaulas; 33.33 % for capillarias and 4.76 % for moniezias. The revealed helminthic pro le of animals islands Bering is characteristic of reindeer sensu lato. Dictyocaulus is the most dangerous, since it is a lung worm, the invasion of which often causes the death of young animals, and in conditions of island isolation, it is not necessary to count on the release of pastures from its larvae.