Laboratory of Physiology, Biochemistry and Nutrition of Poultry

OVERVIEW

THE LABORATORY STAFF:

Hunchak Alla – head of the laboratory, Dr.Sc.

Kyryliv Bogdan – leading researcher, Dr.Sc.

Sirko Yaroslav – leading researcher, Ph.D.

Stefanyshyn Olha – leading researcher, Ph.D.

Bohach Olena – Researcher, Ph.D.

Serhii Sachko – junior researcher, Ph.D.

RESEARCH  AREAS

• Systematic studies of the intensity of metabolic processes in the body of high-yielding crosses and lines of chickens of different productivity directions to clarify the role of substrates in the mechanisms of assimilation of feed nutrients to reduce emissions of nitrogen compounds into the environment.
• Study of the mechanisms of transformation of feed nutrients into eggs and meat of various types of poultry in order to obtain high-quality poultry products that are safe for human consumption and functional products.
• Development of compound feed formulations for feeding commercial and breeding poultry in order to ensure maximum manifestation of its genetic potential without the use of prohibited biological stimulants, antibiotics, hormonal drugs and other substances that suppress or excessively stimulate the function of endocrine glands.

MAIN  ACHIEVEMENTS

Significant Results of Fundamental Research

• Substrate Mechanisms: Elucidated the substrate mechanisms involved in the regulation of metabolic processes within the avian organism.
• Physiological and Biochemical Patterns: Established the patterns of digestion and nutrient assimilation when using diets that include:

• Alternative grain components;
• Varying concentrations and forms of fat-soluble vitamins (A, D3, E);
• Enzyme preparations;
• Citrated trace elements;
• Yeast biomass (as producers of biologically active substances).

• Iodine Supplementation Framework: Developed a theoretical justification for the concept of increasing iodine levels in poultry diets. This includes identifying metabolic patterns under supplementary iodine loading, its influence on embryonic and post-embryonic development of young poultry, and the specific pathways of iodine transformation into poultry products.
• Biogenic Stimulation Mechanisms: Clarified the mechanisms for stimulating metabolic processes in poultry through the action of biogenic additives, such as phytopreparations and lipid-enriched natural sorbents.

Significant Applied Developments

Advanced Feed Formulations: Developed specialized feed recipes for commercial and breeding poultry that ensure the maximum expression of genetic potential without the use of prohibited biological stimulants, antibiotics, hormonal drugs, or substances that disrupt endocrine functions.

Functional Food Solutions: Designed innovative feed additives for various domestic poultry species aimed at producing functional food products, such as eggs with enriched iodine levels for the prevention of iodine deficiency in humans.

Metabolic Correction Strategies: Established methods for modulating metabolic processes in poultry to increase productivity, enhance the nutritional and biological value of products, and reduce environmental nutrient emissions.

Nanotechnology in Nutrition: Validated the efficacy and established optimal dosages and administration protocols for nanotech-derived citrated trace elements (Fe, Cu, Co, Mn, Zn, I) in poultry diets.

INTEREST IN COOPERATION

• Physiological and biochemical studies of blood, muscles, poultry eggs.
• Comprehensive assessment of the quality and safety of feed, additives and premixes for animals, in accordance with modern international requirements.
• Microbiological monitoring of livestock premises, water, feed, poultry products.
• Comprehensive parasitological monitoring and coprological studies.
• Consultative assistance to poultry farms on issues of feeding poultry of different species, age and productive groups.

Hunchak А, Stefanyshyn О, Sirko Y, Kyryliv B, Ratych I, Hunchak V, et al. Innovative feed additives in the optimization of laying hen diets. Regul Mech Biosyst. 2025, 12;16(4):e25204. https://doi.org/10.15421/0225204 (Scopus Q4, Web of Science Q4). (Ukraine)
Motko, N. R., Tkachuk, V. M., Kyryliv, B. Y., Ohorodnyk, N. Z. Influence of feeding with fatty acids emulsions on their content in sheep wool. Regulatory Mechanisms in Biosystems, 2025. 16(2), e25055. https://doi.org/10.15421/0225055 (Q2)
Tkachuk V, Kyryliv B, Ohorodnyk N, Motko N (2025). Evaluation of surface lipids of sheep wool following dietary inclusion of emulsified fatty acid complex.Online J. Anim. Feed Res., 2025. 15(4): 220-227. https://dx.doi.org/10.51227/ojafr.2025.25 (Q3)
Tkachuk V, Kyryliv B, Ohorodnyk N, Motko N. Internal lipids of sheep wool when a water-soluble complex of fatty acids is included into their diet. Biol.Stud., 2025. 19(3): http://dx.doi.org/10.30970/sbi.1903.834 (Q4)
Stefanyshyn O, Hunchak A, Starchevskyy V, Salyha Y. Disruption of Yeast Cells Xanthophyllomyces Dendrorhous (Phaffia rhodozyma) by Vibration Resonant Low-Frequency Cavitator. Chemistry & Chemical Technology. 2023; 17(1): 188–194. https://doi.org/10.23939/chcht17.01 (Scopus Q3). (Ukraine)
Vorobel M, Kaplinskyi V, Klym O, Stefanyshyn O, Hunchak A, Smolyaninova O, Pakholkiv N, Bilovus H. Vitamin and mineral nutrition of dairy cows and its influence on ruminal metabolism and milk productivity. Scientific Papers. Series D. Animal Science. 2023; 66(1): 167–172. https://animalsciencejournal.usamv.ro/index.php/scientific-papers/current (Web of Science Q4). (Romania)
Vorobel, M., Kaplinskyi, V., Klym, O., Prudyus T., Lopotych N., Momut V., Bilovus, H., Stefanyshyn, O., Tsap M., Pylypets A., Smolyaninova, O., Luchka I. (2023). Animal waste as a source of greenhouse gas emissions and a factor of climate change. Scientific Papers. Series D. Animal Science, 66(2): 428–435. https://animalsciencejournal.usamv.ro/index.php/scientific-papers/current (Web of Science Q4). (Romania)
Karpenko Y, Hunchak Y, Gutyj B, Hunchak A, Parchenko M, Parchenko V. Advanced research for physico-chemical properties and parameters of toxicity piperazinium 2-((5-(furan-2-YL)-4-phenyl-4H-1,2,4-triazol-3-YL)THIO) Acetate. ScienceRise: Pharmaceutical Science. 2022; 2(36): 18–25. https://doi.org/10.15587/2519-4852.2022.255848 (Scopus Q3). (Ukraine)
Hunchak V, Martynyshyn V, Gutyi B, Hunchak A, Stefanyshyn O, Parchenko V. Impact of 1,2,3,4-thio-triazole derivative-based liniment on morphological and blood parameters of dogs suffering from dermatomycoses. Regulatory Mechanisms in Biosystems 2020; 294-298. https://doi.org/10.15421/022044 (Web of Science Q4) (Ukraine)
Gutyj B, Ostapyuk A, Sobolev O, Vishchur V, Gubash O, Kurtyak B, Kovalskyi Y, Darmohray L, Hunchak A, Tsisaryk O, Shcherbatyy A, Farionik T, Savchuk L, Palyadichuk O, Hrymak K. Cadmium burden impact on morphological and biochemical blood indicators of poultry. Ukrainian Journal of Ecology. 2019; 9(1): 235-239. (Web of Science Q4) Ukraine
Stefanyshyn О, Hunchak A. The effect of phaffia rhodozyma yeast biomass under different application regimes on the qualitative and quantitative composition of the gut microbiota in laboratory animals under conditions of experimental dysbiosis. In: One world – one health, 4-5 June 2024, Słupsk, Poland. 2024; 279-284 (Poland)
Hunchak A, Stefanyshyn O, Sirko Y, Kyryliv B, Ratych I. Influence of exogenous enzymes and different forms of Sulfur in the diets of broiler chickens on productivity and quality of poultry products. The Animal Biology, 2024; 27(4): 49-54. https://doi.org/10.15407/animbiol26.04.049.
Hunchak А, Sirko Ya, Kyryliv B, Stefanyshyn O, Ratych I, Hunchak V, Gutyj B. Intensity of metabolic processes in laying hens due to changes in the qualitative and quantitative composition of protein in the diet. AGRICULTURAL SCIENCES / «Colloquium-journal» 4(163), 2023; 40-46 DOI: 10.24412/2520-6990-2023-4163-40-46 (Poland)
Hunchak Y, Gutyj B, Hunchak A, Soltys M. Helminthiasis of wild ungulates: helminth fauna. Spread and features of prevention. Scientific Messenger of Lviv National University of Veterinary Medicine and Biotechnologies. Series «Veterinary Sciences», (2023); 25(111): 62-72. https://doi.org/10.32718/nvlvet11110
Said W.S., Gytyj B., Kushnir І., Hunchak V., Hunchak A., Khalak V., Kushnir V., Martyshuk Т., Leskiv Kh., Gyta Z. Morphological parameters of dogs' blood, with experimental infestation with toxocariasis and «Fenbenzyl». Colloquium-journal, 2022; 18(141). DOI: 10.24412/2520-6990-2022-18141-10-16 (Poland)
Ratych I, Hunchak A, Sirko Y, Stefanyshyn O, Kyryliv B, Chomyk I. Laying hens productivity and quality of eggs at changing the qualitative and quantitative composition of feed protein. The Animal Biology, 2022; 24(3): 27-32. https://doi.org/10.15407/animbiol24.03.027.
Hunchak V, Yuskiv I, Gutyj B, Hunchak A, Parchenko V. Parasitofauna of farm red deer (Cervus elaphus) in Western Polissya of Ukraine. Scientific Messenger of Lviv National University of Veterinary Medicine and Biotechnologies. Series «Veterinary Sciences», 2022; 24(105): 50-58. https://doi.org/10.32718/nvlvet10508
Hunchak A, Medvid S. Stefanyshyn O, Sirko Y, Koretchuk S. Microelement (Mn, Zn, Cu, Fe, Co, І) levels in quails and their eggs according to their forms and dosage in poultry diet. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series «Agricultural Sciences», 2021; 23(94): 50-55. https://doi.org/10.32718/nvlvet-a9410
Kyryliv B, Hunchak A, Ratych I, Gutyj B. Influence of alimentary factors on the absorption of feed nutrients and poultry productivity. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series «Agricultural Sciences», 2021; 23(95): 3-14. https://doi.org/10.32718/nvlvet-a9501

 CONTACT INFORMATION

Laboratory of Physiology, Biochemistry and Nutrition of Poultry

Contact person: Hunchak Alla – Head of the laboratory, Dr.Sc.

Tel: +38 (098) 26 65 253

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.