Alexey N Frolov, Elemes A Azhmuldinov,Anatoly V Kharlamov
Animal Husbandry and Fodder Production. 2023. Vol. 106, no 4. Р. 91-101.
doi:10.33284/2658-3135-106-4-91
Original article
Effect of season and duration of pre-slaughter handling on oxidative stress levels, slaughter
performance, and quality traits of steer meat
Alexey N Frolov1, Elemes A Azhmuldinov2,Anatoly V Kharlamov3
1,2,3Federal Research Centrе of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, Orenburg, Russia
1forleh@mail.ru, https://orcid.org/0000-0003-4525-2554
2fncbst@mail.ru
3harlamov52@mail.ru, https://orcid.org/0000-0002-9477-6568
Abstract. According to the implemented strategy for the improvement of the quality of food products in the Russian Federation until 2030, the improvement of the quality characteristics of beef is a priority area of research. In this connection, the aim of the study was to investigate the effect of the season of the year (winter, summer) and the duration of pre-slaughter handling on oxidative stress level, slaughter traits and qualitative characteristics of beef. For this purpose, a scientific and economic experiment was conducted in the conditions of CJSC "Poultry factory Orenburgskaya" on 4 groups of 18-month-old Ayrshire steers (n=40), live weight 435,5±6,27 kg: I - slaughter in winter period (February) without starvation, II - slaughter in winter period with 24-hour starvation in meat processing plant, III - slaughter in summer period (July) without starvation, IV - slaughter in summer period with 24-hour starvation in meat processing plant. The results of the experiment showed that the season of slaughtering animals has a significant effect on antioxidant defenses and oxidative stress of the animal. In summer period steers were characterized by high concentrations of malonic dialdehyde by 105.9-150.8% with a decrease in the level of catalase - by 12.8-44.8% compared to winter. Control slaughters of animals showed that the season of the year and the duration of pre-slaughter handling had no a significant effect on quantitative slaughter traits: carcass weight and slaughter yield. Evaluation of qualitative characteristics of minced meat showed that technological operation in the form of starvation allows to in-crease dry matter by 0.62-0.82%, with a decrease in moisture by 0.62-0.83%, color - by 15.7-16.5%, in comparison with animals without starvation. In the winter period, the proteins of minced meat contained more essential amino ac-ids: lysine, phenylalanine, histidine, leucine+isoleucine, and valine compared to the summer period.
Keywords: steers, Ayrshire breed, antioxidant status, slaughter weight, meat, chemical composition of meat, pH
Acknowledgments: the work was performed in accordance to the plan of research works for 2021-2023 FSBRI FRC BST RAS (FSZM-2019-0006).
For citation: Frolov AN, Azhmuldinov EA, Kharlamov AV. Effect of season and duration of pre-slaughter handling on oxidative stress levels, slaughter performance, and quality traits of steer meat. Animal Husbandry and Fodder Production. 2023;106(4):91-101. (In Russ.). https://doi.org/10.33284/2658-3135-106-4-91
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Information about the authors:
Alexey N Frolov, Dr. Sci. (Biology), Head of Department of Technology for Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29, 9 Yanvarya St., 460000, Orenburg, tel.: 8(3532)30-81-78.
Elemes A Azhmuldinov, Dr. Sci. (Agriculture), Professor, Chief Researcher, Department of Technology for Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29, 9 Yanvarya St., 460000, Orenburg, tel.: 8(3532)30-81-78.
Anatoly V Kharlamov, Dr. Sci. (Agriculture), Professor, Chief Researcher, Department of Technology for Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29, 9 Yanvarya St., 460000, Orenburg, tel.: 8(3532)30-81-78.
The article was submitted 21.11.2023; approved after reviewing 01.12.2023; accepted for publication 11.12.2023.
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