Adaptive changes in the ornithine cycle and amino acid synthesis in sheep liver with different meat productivity
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صندلی اداریAbstract
The aim of the research was to study the ornithine cycle as the process of fixing ammonia and the formation of urea in the body of highly productive animals. In our experiments, we used a protein-deficient diet and urea as a nitrogen substitute for nitrogen-containing materials in the diet to reveal the mechanism of action of urea on animals, in particular on the biochemical processes of the ornithine cycle. There are some differences between Bukovinian sheep of the Askanian meat-wool breed and outbreds in terms of the ability to build muscle tissue. Our study reveals that the slaughter yield and the average daily gain consumption of Bukovinian-type meat of the Askanian meat-wool breed were higher in summer and in autumn, compare with purebred sheep. Sheep of the Bukovynian type of Askanian meat-wool breed have the intensity of enzymatic formation of urea in liver homogenates that is much higher in all experiments than in outbred sheep. A sharp drop in the activity of all stages of urea formation and glutamic acid synthesis in liver homogenates and significantly weakened urea formation was found in all experiments of the fourth series in comparison with the experiments in the third series. Increased muscle growth, high nitrogen deposition, and a much lower percentage of urinary excretion of ammonia and urea nitrogen, as well as higher activity of enzymes of the ornithine cycle and glutamic acid synthesis in the Bukovinian sheep type of Askanian meat-wool breed compared to outbreeds allow concluding that ammonia and urea in highly productive animals act less as finishing products of nitrogen metabolism than in low-productive animals.
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References
Chernomyz, T. O., Lesyk, O. B., & Pokhivka, M. V. (2014). The Bukovynian type of Askanian meat-wool sheep with crossbred wool is an important reserve for increasing the production of meat. Problems of zooengineering and veterinary medicine, 28 (1), 100-107. Retrieved from http://nbuv.gov.ua/UJRN/pzvm_2014_28%281%29__12.
Ibatullin, I. I., Zhukorsky, O. M., & Bashchenko, M. I. (2017). Methodology and organization of scientific studies in creativity: a tool. Kyiv: Agrarian Science.Workshop On Feeding Farm Animals: Educ. Tool.
Kotsiumbas, H. I., Shcherbakovska, O. M., & Kotsiumbas, I. Ia. (2012). Ekspertyza kovbasnykh vyrobiv histolohichnym metodom. Lviv. (in Ukranian)
Lynchab, S. A., O'Neill, A. M., Drummond, L., & Álvareza, C. (2018). Opportunities and perspectives for utilisation of co-products in the meat industry. Meat Science, 144, 62–73. DOI: https://doi.org/10.1016/j.meatsci.2018.06.019.
Meat and Meat Products (National Standard of Ukraine) (2005). Method for the determination of total nitrite content (control method) (ISO 2918: 1975, IDT): DSTU ISO 2918: 2005. Effect from 2008-01-01. To: State Consumer Standard of Ukraine, 2010.
Nischemenko, M. P, Samoray, M. M., & Prokopishina, T. B. (2012). The use of essential amino acids in the cultivation of various species of animals. Scientific and technical bulletin of IBT NAAS, 3–4, 437–443.
Pașca I., Cîmpean A., & Pusta D. (2018). Carcass Characteristics of Purebred Tsurcana Lambs and F1 Crossbreds (Tsurcana ×Vendeen). Bulletin of University of agricultural sciences and veterinary medicine, 75, 87–91. DOI: 10.15835/ buasvmcn-vm:005717.
Pokhyl, V. I., & Mykolaychuk, L. P. (2019). Age-related variability of the woollen coat of Romanivska sheep breed. Theoretical and Applied Veterinary Medicine, 7(3), 172‒176. doi: 10.32819/2019.71031.
Pokhyl, V. I., & Mykolaychuk, L. P. (2019). Methods of improvement of the meat productivity of sheep. International Scientific Conference Scientific Development of New Eastern Europe: Conference Proceedings, Part II. Riga, Latvia: Baltija Publishing, 107-110.
Polska, P. I. (2001). Askani meat-wool breed of sheep Encyclopedia of Modern Ukraine: electronic version [website] of the National Academy of Sciences of Ukraine, NTSh. Kiev. Institute of Encyclopedic Research of the National Academy of Sciences of Ukraine, Retrievied from https://esu.com.ua/search_articles.php?id=44442.
Prylipko, T., Koval, Т., & Kostash, V. (2020). Optimization of recipe turkey meat pate. Carpatian journal of food science and technology, 12(4), 98-112. DOI: https://doi.org/10.34302/crpjfst/2020.12.4.11.
Prylipko, Т., Kostash, V., & Koval, Т. (2021). Modeling of microbiological and biochemical processes under the conditions of steam contact sterilization in containers of turkey meat pate. Independent Journal Of Management & Production, 12(3), 318-334. DOI: http://dx.doi.org/10.14807/ijmp.v12i3.1444.
Scales, G. H., Bray, A. R., & Baird, D. B. (2000). Effect of sire breed on growth, carcass, and wool characteristics of lambs born to Merino ewes in New Zealand. New Zealand J. of Agricultural Research, 43, 93–100. DOI: 10.1080/00288233.2000.951341213.
Vdovichenko, Y. V., Iovenko, V. M., & Zharuk, P. G. (2016). The state and scientific support of the sheep industry in Ukraine. Scientific Bulletin "AskaniaNova", 9, 3–16.
Zonabend König, E., Ojango, J. M. K., & Audho, J. (2017). Live weight, conformation, carcass traits and economic values of ram lambs of Red Maasai and Dorper sheep and their crosses. Tropical Animal Health and Production, 49, 121–129. DOI: 10.1007/s11250-016-1168-5 14.