Фахові видання

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https://dspace.pdau.edu.ua/handle/123456789/78

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Перегляд Фахові видання за Автор "Shostia, A. M."

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  • Ескіз
    Публікація
    Effects of surgical and chemical castration on growth performance and meat quality of boars
    ("Regulatory Mechanisms in Biosystems", 2026-02-12) Polishchuk, A. A.; Shostia, A. M.; Usenko, S. O.; Ilchenko, M. O.; Kuzmenko, L. M.; Myronenko, O. I.; Vashchenko, P. A.; Поліщук, Анатолій Анатолійович; Шостя, Анатолій Михайлович; Усенко, Світлана Олексіївна; Ільченко, Марія Олександрівна; Кузьменко, Лариса Михайлівна; Мироненко, Олена Іванівна; Ващенко, Павло Анатолійович
    Growing animal welfare concerns have intensified the need for effective and humane alternatives to surgical castration for the control of boar taint in pig production. The study investigated the effects of different castration methods on growth performance, physiological status, and meat quality of boars. Surgical castration and chemical sterilization using intratesticular administration of Canophen-B were compared with intact males. Experiments were conducted on Large White boars under controlled feeding and housing conditions in accordance with animal welfare and bioethical standards. In the first experiment, chemically sterilized and intact sexually mature boars showed similar live body weight and average daily gain. Chemical sterilization resulted in a significant reduction in serum testosterone concentration, while hematological parameters remained within physiological reference ranges, indicating no adverse effects on animal health. Sensory evaluation demonstrated that meat and broth obtained from chemically sterilized boars were free of specific odor, whereas samples from intact males exhibited a characteristic odor, particularly in broth. In the second experiment, surgically castrated boars had lower final live body weight compared with chemically sterilized and intact males. Meat yield was higher and fat yield was lower in intact and chemically sterilized boars than in surgically castrated animals. Serum testosterone levels at the end of the fattening period were highest in intact males, intermediate in chemically sterilized boars, and lowest in surgically castrated animals. Hematological indicators in all groups remained within normal physiological limits. Sensory evaluation of cooked meat revealed no statistically significant differences among experimental groups for odor, color, tenderness, taste, texture, or fibrousness. However, broth prepared from chemically sterilized boars showed significantly higher scores for transparency compared with intact males, while other sensory attributes did not differ significantly. The results indicate that chemical sterilization effectively suppresses testosterone synthesis without negatively affecting growth performance, health status, or sensory quality of meat. The absence of boar taint in products obtained from chemically sterilized males suggests that this method can be considered a viable alternative to surgical castration in pig production, combining acceptable meat quality with improved animal welfare.
  • Ескіз
    Публікація
    Establishing the influence of sunflower oil quality indicators on the efficiency of the transesterification catalyst
    (2025-12-30) Korchak, M.; Knysh, V.; Shostia, A. M.; Шостя, Анатолій Михайлович; Usenko, S. O.; Усенко, Світлана Олексіївна; Rachynska, Z.; Viaskov, V.; Kostenko, I.; Glavatchuk, V.; Zygin, S.; Hmelnitska, Y.; Хмельницька, Євгенія Вікторівна
    The object of the study is the process of chemical transesterification of sunflower oil with increased mass fraction of moisture and acid value.Transesterification technology allows obtaining fats with the necessary physico-chemical properties without changing the fatty acid composition. The problem of using alkaline catalysts is rapid deactivation under the influence of impurities present in the fatty raw material. The greatest influence is exerted by moisture and fatty acids. Transesterification of sunflower oil with increased mass fraction of moisture and acid value in the presence of potassium glyceroxide, which is more resistant to deactivating impurities, was studied. Oil parameters: peroxide value 0.18 ½ O mmol/kg, acid value 0.08 mg KOH/g, mass fraction of moisture 0.05%, crystallization temperature –18.38°C.Oil samples with mass fractions of moisture from 0.1 to 0.75% (obtained by adding water) were stored for two months under the following conditions: temperature (20±2) °C, air humidity not more than 70%. After storage, the acid value was measured in each sample and transesterification was performed. The efficiency of the process was assessed by the oil crystallization temperature. The maximum values of oil indicators at which the potassium glyceroxide catalyst is effective were established: mass fraction of moisture 0.4%, acid value 0.28 mg KOH/g. At the same time, the crystallization temperature of sunflower oil is –3.95°C, which corresponds to the maximum increase in the crystallization temperature of oil as a result of transesterification. The results obtained make it possible to effectively transesterify sunflower and other types of non-standard quality oils without preliminary treatment. This will reduce the cost of production and increase the profitability of enterprises (depending on the indicators of non-standard raw materials).
  • Ескіз
    Документ
    Hormonal regulation of prooxidant-antioxidant homeostasis in gilts.
    (2020-08) Stoyanovskyy, V.; Usenko, S. O.; Shostia, A. M.; Kuzmenko, L. M.; Slynko, V. H.; Tenditnyk, V. S.; Усенко, Світлана Олексіївна; Шостя, Анатолій Михайлович; Кузьменко, Лариса Михайлівна; Слинько, Віктор Григорович; Тендітник, Володимир Сергійович
  • Ескіз
    Документ
    Influence of vitamins on the prooxidant-antioxidant homeostasis in boars under the conditions of heat stress.
    (2020-02) Usenko, S. O.; Shostia, A. M.; Stojanovskyi, V. G.; Tenditnyk, V. S.; Birta, G. O.; Kravchenko, O. I.; Kuzmenko, L. M.; Усенко, Світлана Олексіївна; Шостя, Анатолій Михайлович; Тендітник, Володимир Сергійович; Кузьменко, Лариса Михайлівна; Кравченко, Оксана Іванівна
  • Ескіз
    Документ
    Morpho-biological traits of sexed and non-sexed sperm of Holstein bulls
    (2021) Shostia, A. M.; Usenko, S. O.; Шостя, Анатолій Михайлович; Усенко, Світлана Олексіївна
    Presented results of the comparative analysis of non-sexed and sexed sperm of the same Holstein bulls after defrosting considering: the concentration of spermatozoa in 1 ml, their motility, survival, the dynamic characteristics of the movement, the acrosome integrity (intactness), the level of microbial contamination. It has been established that the motility and survival of sexed sperm were lower by 15–20% compared with similar traits of non-sexed sperm. The sperm of the bull Vioris Sleeman HOCANM7817774 had the highest activity rate in non-sexed and sexed forms. This demonstrates the possibility of breeding bulls based on this quality trait. The experimental results indicate the necessity to improve the technology of freezing and thawing sexed bull sperm and the relevance of training specialists of breeding centers and farms in Ukraine.