Ukrainian Journal of Veterinary and Agricultural Sciences最新文献

{"title":"Effect of a mineral-phytobiotic supplement on meat productivity and meat quality of crossbred sheep","authors":"M. D. Perig, Y. Kyryliv","doi":"10.32718/ujvas6-1.03","DOIUrl":"https://doi.org/10.32718/ujvas6-1.03","url":null,"abstract":"The article provides data on modern lamb production systems and factors affecting their quality. In order to obtain high-quality lamb, a mineral-phytobiotic additive was developed, which includes sulfate and sodium metasilicate as sources of sulfur and silicon, and a phytobiotic additive containing chili pepper, which has a fungicidal effect and exhibits antibacterial properties, intensifying the digestion process, cinnamon essential oil, which contributes to the normalization of the composition of the intestinal microflora and its stabilization. Carvacrol, contained in oregano oil, exhibits antibacterial and antifungal properties; thanks to this, it can be a good antiseptic, killing parasites that cause intestinal dysfunction. The best result was the addition of such a mixture in the amount of 1.8 % to the compound feed for young sheep in rearing from 10 days to 255 days of age. In order to study the influence of the mineral-phytobiotic supplement on growth intensity and meat quality, sheep were weighed at one day, 60, 100, 135, 180, and 255 days of age. In order to control the slaughter indicators of meat productivity, they were slaughtered at the age of 255 days (8.5 months, lamb category), since the meat of these animals is consumable. The taste properties of the meat were also assessed by tasting. As a result of the controlled slaughter, it was established that the addition of 1.8 % of the mineral-phytobiotic additive increased the live weight by 18.68 %, the slaughter weight by 22.87 %, the weight of the steamed carcass by 21.5 %, the chilled by 22.29 % of the slaughter yield by 3.52 %. Along with the increase in overall productivity, the chemical composition of lamb meat changed. In particular, protein level increased by 4.22 %, dry matter by 6.09 %, and ash by 11.25 %. The calorie content of meat increased by 2.47 %, and the protein/fat ratio approached 1 : 0.75 and was 1 : 0.79. The definition of taste qualities indicates that the meat of young animals is lighter and more delicate to taste. The nutritional value and dietary properties of meat were determined by color, tenderness, aroma, taste, juiciness, and appearance. The taste qualities of sheep were assessed by tasting. According to the organoleptic assessment, the meat from sheep of both groups had a pleasant smell, tender and juicy. According to the general assessment, the meat of the experimental group is excellent, and that of the control group is very good.","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123995131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Probiotic feed additive “EnzActive” against the background of hay-type fattening of young bulls","authors":"O. Mil, Y. Pivtorak","doi":"10.32718/ujvas6-1.10","DOIUrl":"https://doi.org/10.32718/ujvas6-1.10","url":null,"abstract":"Standardized feeding of young cattle should be based on scientifically based standards, guaranteeing their genetic productivity potential, rational use of fodder resources, and proper feed payment with meat products. The current situation regarding the rationing of livestock feeding in global and domestic, both scientific and industrial practices, has fundamentally changed, which requires a significant revision of the traditional provisions on the organization of standardized feeding and feeding of farm animals. At the same time, the conceptual requirements for the organization of standardized feeding of young livestock should be based on the generalization of world experience in need of animals for energy, nutrients, and biologically active substances, taking into account the age period of fattening with an emphasis on the quality and biosafety of products. In the conditions of intensive production of meat products, to ensure high productivity, it is impossible to do without using feed products of natural substance, which should include additives with a purely biological effect. One of these includes the feed additive “EnzActive”, which contains a unique formula of a combination of biotic and enzymatic action, which consists of live yeast of the genus Saccharomyces cerevisiae, and a complex of six enzymes: protease, cellulose, xynalose, α-amylase, ß-gluconase and phytase. The research was based on optimizing the standardized feeding of fattening young animals on hay-type rations using the probiotic feed additive “EnzActive” based on 8 g/head per day. The research was conducted on Simmental bulls in the conditions of the “Pchany-Denkovych” farm of the Stryi district of the Lviv region. It was established that the use of the probiotic supplement “EnzActive” against the background of hay-type feeding contributed to the improvement of the intensity of the vital activity of the physiologically helpful microflora of the rumen, which had a stimulating effect in the processes of additional assimilation of nutrients. A positive result was obtained regarding the level of average daily growth and functional features of rumen microflora, the final period of fattening. Thus, based on the results of our research, it is possible to recommend introducing the hay type with the inclusion of probiotic feed additive “EnzActive” at the rate of 8 g/head into the intensive livestock technology fattening a day. No adverse side effects of “EnzActive” bio-additives on the general functional condition of young bull's residents were found.","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128609992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Specific features of the morphology of the spinal nodes of homeothermal vertebrate animals in the comparative and anatomical series","authors":"L. Horalskyi, I. Sokulskyi, N. Kolesnik, N. Radzіkhovsky, О. Dunaievska, B. Gutyj, O. Pavliuchenko, I. Horalska","doi":"10.32718/ujvas6-1.04","DOIUrl":"https://doi.org/10.32718/ujvas6-1.04","url":null,"abstract":"Scientific studies that reflect the evolutionary morphology of the nervous system, namely the spinal nodes of homoeothermic vertebrates, allow us to identify specific patterns, trends, and criteria that relate to the structural organization of the organ at the population and cellular levels of their organization. The evolutionary direction of research into the macro- and microstructure of spinal cord nodes provides an opportunity to investigate the patterns of formation of optimal relationships of their structural components: nerve and glial cells, capillaries concerning the level of development of the organism, and their motor activity. The article contains the results of the morphometric characteristics of the spinal nodes of warm-blooded vertebrates in a comparative aspect: class Aves – Birds (Gallus gallus, forma domestica L., 1758 – domestic chicken); class Mammalia – Mammals (Oryctolagus cuniculus L., 1758 – European krill, Canis lupus familiaris L., 1758 – domestic dog, Sus scrofa, forma domestica L., 1758 – domestic pig, Bos taurus taurus L., 1758 – domestic bull). When performing this work, complex research methods were used: anatomical, neurohistological, morphometric, and statistical. The morphological study of the structural components of the organs of the nervous system was studied on histological sections by the method of light microscopy following the requirements of the international principles of the “European Convention for the Protection of Vertebrate Animals Used in Experiments and for Other Scientific Purposes” (Strasbourg, 1986), a decision of the First National Congress on Bioethics (Kyiv, 2001), Law of Ukraine No. 692 “On the Protection of Animals from Cruel Treatment” (3447-IV) dated February 21, 2006. For histological examination, the newly selected material was immediately fixed in a 10% aqueous neutral formalin solution, with a fixation period of 30 days, followed by step-by-step embedding in paraffin. Using a sled microtome, histological sections with a thickness of 6–10 μm were obtained. The general histological structure and microstructural changes in histological preparations were studied under a light microscope MC (Micros Austria) at magnifications from 70 to 600 times. Photomicrographs of histological preparations were carried out using a CAM V200 video camera mounted in a Micros MC microscope. The work aims to conduct a complex morpho-functional study of spinal nodes in a comparative anatomical series of representatives of higher vertebrates. It was investigated that in phylogenesis, a particular structural and morphofunctional rearrangement of the central and peripheral nervous system organs, namely the spinal nodes, takes place. They differ in shape and size. It was established that the neurocytic organization of the spinal cord nodes of all species of animals studied is characterized by the presence of large, medium, and small nerve cells. Adaptation to various living conditions of animals was formed based o","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128949031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Small hive beetle (Aethina tumida) threat on the horizon","authors":"O. Kulishenko, P. Davydenko, I. Borovyk, M. Radzykhovskyi, B. Gutyj","doi":"10.32718/ujvas6-1.12","DOIUrl":"https://doi.org/10.32718/ujvas6-1.12","url":null,"abstract":"Beekeeping is an agricultural industry that deals with breeding bees, obtaining honey, wax, and other products. Bees are used for pollination of many types of crops to increase their harvest. Beekeeping products are also used in medicine, pharmacology, chemical, and food industries. One of the essential aspects of successful beekeeping development is ensuring sustainable epizootic well-being from infectious and invasive bee diseases in Ukraine. About 3 million bee colonies are owned by private farms and amateur beekeepers, which give approximately 50-60 thousand tons of commercial honey and 1.2–1.4 thousand tons of wax per year at the current stage of beekeeping development in Ukraine. Honey and bee products from Ukraine received 15 prestigious awards in various categories at the 77th National Honey Show, held in London among many countries in 2008. In recent years, there has been a constant increase in the threat of new little-known invasive and infectious diseases that pose a significant danger to beekeeping worldwide. The invasion of the small hive beetle Aethina tumida belongs to quarantine and hazardous invasive diseases, which have destroyed many bee colonies in several countries worldwide (USA, Canada, African countries, Australia, some European countries – Italy, and Portugal). There are no effective methods of preventing and controlling the small hive beetle. The only way to prevent the invasion of the small hive beetle in Ukraine is constant monitoring and control at the state border of the movement of bee packages and bee products, which may pose a threat to introducing this invasive species into Ukraine.","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129010802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drug potency effects of three anthelmintics against natural fascioliasis with hematological values in goat","authors":"Md. Ashraf Zaman Faruk","doi":"10.32718/ujvas6-1.01","DOIUrl":"https://doi.org/10.32718/ujvas6-1.01","url":null,"abstract":"The purpose of the study was to compare the effectiveness of three anthelmintics against naturally occurring fascioliasis in goats as well as how they affected various hematological values over the course of 28 days. For this investigation, out of 417 goats, 60 were selected who were suffering from liver fluke infection. After being randomly divided into four groups of 15 animals each, the first three groups got treatment with triclabendazole, oxyclozanide, and nitroxynil while the fourth group was kept as a control group and received no medication. The results of the study showed that the egg per gram (EPG) count of the treatment groups significantly decreased successively (P < 0.01) on days 3rd, 7th, 14th, and 28th, whereas the control group produced significantly from day 3rd through the experimental period. Results revealed that the mean EPG was reduced by 78.40 %, 73.33 %, and 83.11 %, respectively, following treatment with triclabendazole, oxyclozanide, and nitroxynil, while the mean EPG production was 22.66 % in the control group. Hematological parameters including Hb, PCV, and TEC values, were lower before the treatment but turned to increase significantly (P < 0.01) on study day 28th, however, the mean TLC values were decreased substantially (P < 0.01) compared to the untreated control group. This result may indicate that all three anthelmintics were efficient, but nitroxynil had a relatively higher efficacy against goat fascioliasis regarding on the EPG and hematological indices.","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122313547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SteE enhances the colonization of Salmonella Pullorum in chickens","authors":"Zhike Liu, A. Fotin, R. Petrov, Jinyou Ma, T. Fotina","doi":"10.32718/ujvas6-1.07","DOIUrl":"https://doi.org/10.32718/ujvas6-1.07","url":null,"abstract":"Salmonella pullorum (S. pullorum) is the causative agent of pullorum disease and results in severe economic losses in poultry, and can long-term survival by colonizing host organs. steE is an effector protein secreted by Salmonella pathogenicity island 2. It is not clear in vivo for the colonization of Salmonella. To investigate the role of steE on the colonization of S. Pullorum in the principal organs of chicken, we used S. pullorum and S. pullorum ΔsteE strains immunized chickens, respectively. The results of the virulence assay showed that the LD50 of S. pullorum ΔsteE was 22.8 times higher than that of S. pullorum in chickens. The colonization experiment of bacteria showed that the overall change trend of the number of S. pullorum and S. pullorum ΔsteE strains were similar in chicken liver, spleen, heart, bursa, and cecum, which increased first and then decreased. However, the deletion of steE caused significantly reduced colonization, pathological change, and virulence of S. pullorum in a chicken infection model. Our findings provide exciting insights into the pathogenic mechanism and live attenuated vaccine associated with steE in S. pullorum.","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122460617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Helminthоfauna of red deer (Cervus elaphus) and fallow deer (Dama dama) in the farm of the Western Polissia of Ukraine","authors":"Yu. R. Hunchak, I. Yuskiv","doi":"10.32718/ujvas6-1.05","DOIUrl":"https://doi.org/10.32718/ujvas6-1.05","url":null,"abstract":"Host animals – red deer (Cervus elaphus) and European fallow deer (Dama dama) for industrial cultivation in the conditions of the “Amila” farm in the Western Polissia of Ukraine can be the primary source of the spread of the helminthic infestation. Following this, in September 2022, samples of feces from a red deer (n = 22) and a European fallow deer (n = 5) were collected for coprological research. During the helminthological study of red deer from five lineages (Eastern European, English, Hungarian, Latvian crossbred, Lithuanian crossbred) in farms, Ostertagia leptospicularis mint eggs were found in faeces in 72.7 % of animals at an intensity of infestation of 6.0 ± 2.1 to 19.3 ± 5.6 EGF. As part of a two-component associative invasion, the species of helminth Ostertagia leptospicularis crossed together with the species Cooperia oncophora (18.2 %). In samples of deer feces, the intensity of Cooperia oncophora egg infestation ranged from 3.5 ± 1.5 to 4.5 ± 2.5 EGF. In the European fallow deer, a coprological examination of collected faecal samples revealed helminth eggs of Ostertagia leptospicularis in 80.0 % of animals with an average infestation intensity of 7.3 ± 2.6 EGF. As part of a two-component associative infestation, the helminth species Ostertagia leptospicularis ran together with the Tricostrongylus axei (20.0 %). The intensity of infestation with eggs of the helminth Trichostrongylus axei averaged 2.5 ± 0.5 EGF. However, in this study, the helminthic infestation was observed in most wild ruminants, but the average infestation intensity was low. In contrast to our previous study on the species distribution of parasites of red deer (Cervus elaphus), the relative abundance and prevalence of nematode eggs: Trichostrongylus, Ostertagia, Coperia, Habertia, Haemonchus, Aonchotheca (capillaria), Strongyloides and Mulleria larvae were generally much higher before deworming in animals on a deer farm. Our findings indicate that the potential for transmission of helminthic infestations is relatively low if monitoring studies on parasite infestation of wild ruminants and their planned deworming are carried out periodically.","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116707860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Factors on the gastrointestinal microbiota of Pigs","authors":"M. Bolibrukh, I. Rublenko","doi":"10.32718/ujvas6-1.11","DOIUrl":"https://doi.org/10.32718/ujvas6-1.11","url":null,"abstract":"A complete understanding of the dynamic distribution of the intestinal microbiota in pigs is essential because microorganisms play a fundamental role in physiological processes, immunity, and nutrient metabolism by the macroorganism. Disruption of the gut microbiome can cause inflammation, oxidative stress, and a cytokine storm. Gut microbiome dysfunction can be caused by short-term or long-term (environmental, nutritional, and stress) factors. The microbial ecosystem of the intestine is fundamental for the pig's proper nutrition, and physiological and immunological functions. However, the composition and function of a healthy microbial ecosystem have yet to be qualitatively and quantitatively determined to be used as a tool to maximize animal health and performance. As efforts are made to reduce the use of antibiotics in pig farming, the ability of the gut microbiota to increase disease resistance must be recognized. Generally, the genera Bacteroides, Escherichia, Clostridium, Lactobacillus, Fusobacterium, and Prevotella dominate in pre-weaning piglets. Then Prevotella and Aneriacter become the dominant genera, with Fusobacterium, Lactobacillus and Miscellaneous as relative minors in post-weaning piglets. Specific genera of bacteria, including Bacteroides, Prevotella, and Lactobacillus, can be detected in more than 90 % of pigs and three enterotypes – identified in animals of the same species but of different ages. This suggests the presence of a “core” microbiota in the gut of healthy pigs that may be a potential target for nutritional or health regulation. The scientists' scientific data help to determine the “optimal” gut microbial profile for evaluating or improving the performance and health status of pigs at different stages of growth. Although external and stochastic factors contribute to the individuality of the microbiota, the fundamental principles governing how environmental factors and host genetic factors combine to shape this complex ecosystem are largely unknown and require systematic study.","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129530507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"State epizootic monitoring of contagious diseases of bees in the territory of the Volyn region","authors":"B. Gutyj, T. Fotina, O. Kysterna, V. Behas, V. Yevstafieva, D. Feshchenko, O. Zghozinska","doi":"10.32718/ujvas6-1.09","DOIUrl":"https://doi.org/10.32718/ujvas6-1.09","url":null,"abstract":"The well-being of apiaries is a priority in the state's economic, social, and environmental aspects. There is a state monitoring system to ensure proper control over the prevalence of infectious, invasive, and viral diseases. This system systematically monitors the spread of diseases that cause significant economic problems. Solving these problems will further shape the state's favorability to ensure the export of beekeeping products to European countries. Data on the spread of infectious and invasive diseases of bees from official departments of the State Production and Consumer Services of particular regions. In work, such data were processed in the Volyn region from 2017 to 2022, including a plan for determining the incidence and incidence rates in this region. The results show that nosemosis and varroosis were the most common diseases in the Volyn region during the studied period. It was established that the indicator of bee colonies with the Varroa destructor mite in all analyzed years exceeds the incidence of nosemosis by 8.03 % (2020) – 24.49 % (2021). Moreover, the highest incidence of both diseases during the studied period was registered in 2021. In 2017, American foulbrood (AFB), created by a bacterium, was recorded in this region. The spread of bacterial diseases in bees is given. From the analyzed data, it is possible to note the imperfection of the monitoring system, as the research plans include a wide range of invasive diseases, but a small share is allocated to bacterial infections. Unplanned beekeeping studies include invasive and infectious diseases: bee bacteriosis and viral pathologies. The main problem is the low percentage of certified private farms. As a result, it is challenging to analyze damage to apiaries by contagious bee diseases. Thus, it is necessary to improve the state monitoring system, owing to which it will be possible to diagnose planned not only infectious and invasive diseases but also other diseases of bees that cause massive destruction of hives in apiaries of our state.","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114689833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamics of ovarian structures after aplication of Suprelorin® (4.7 mg de-slorelin acetate) implant for estrus induction in bitches","authors":"T. Holumbiiovska","doi":"10.32718/ujvas6-1.08","DOIUrl":"https://doi.org/10.32718/ujvas6-1.08","url":null,"abstract":"The sexual cycle and ovulation in bitches occur much less often than in other domestic animals, as they are monoestrous. In addition, dogs have spontaneous ovulation and, consequently, a spontaneous luteal phase. This physiology of the sexual cycle in bitches leads to specific difficulties with reproduction. Owners often cannot connect a bitch with a dog in time and, accordingly, get offspring due to the absence of heat or prolonged anestrus. Therefore, the stimulation of the sexual cycle in bitches is gaining more and more interest among animal owners. Understanding the physiology of the sexual cycle and its stages makes it possible to manipulate it safely and without negative consequences for the bitch's body. We recommend using the Suprelorin implant in late anestrus to induce estrus and obtain ovulation in bitches. Implant Suprelorin®, primarily registered for the pharmacological sterilization of dogs and cats, causes estrus at the beginning of its action. This mechanism of action of Deslorelin implants is known as the flare effect due to its stimulating effect on the secretion of gonadotropin (GnRH), which triggers the synthesis of follicle-stimulating and luteinizing hormones from the pituitary gland. Our results showed that the use of the Suprelorin® implant (4.7 mg Deslorelin) is safe for the induction of oestrus in bitches and does not cause side effects. The proposed induction scheme makes it possible to achieve the highest level of initiation of the sexual cycle (hypothalamus-pituitary-gonads), which is as close as possible to the natural sexual cycle regarding the mechanism of action and is safe for the bitch's body. Ultrasound diagnostics occupy an essential place in studying animals with gynecological problems. There are not many studies in bitches that would show the dynamics of ovarian follicles after using the Deslorelin implant. In our studies, ultrasonographic examination of ovarian structures revealed a faster appearance of follicles in the group of bitches treated with the Deslorelin implant (4.7 mg) compared to the control group; at the same time, their size was significantly more extensive, and the ovulated faster. The appearance of anechoic structures on the ovaries with a size of more than 3 mm (mean 3.2 ± 0.1) was detected already on the third day after the introduction of the implant in 3/6 bitches in the experimental group, while in the control group, only on the fifth day (4/6) and on the seventh (2/6) day. Follicle sizes differed statistically between groups from the 9th to the 12th day. In the experimental group, the appearance of follicles was noted earlier than in the control group (starting from the third day); they were significantly more extensive and ovulated on the 14th day, while in the control group, only on the 16th day.","PeriodicalId":231752,"journal":{"name":"Ukrainian Journal of Veterinary and Agricultural Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130191137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}