The effect of transportation and pre-slaughter detention on quality of pig meat

Marian Simonov; Ivan Stronskyi; Volodymyr Salata; Yuriy Stronskyi; Larysa Kladnytska; Mykola Kukhtyn; Viktor Tomchuk; Tetiana Kozytska; Tetiana Tokarchuk

doi:10.5219/1699

Authors

Marian Simonov Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Faculty of Social Development and Health, Department of Veterinary-Sanitary Inspection, Pekarska Str., 50, 79010, Lviv, Ukraine, Тel.: +380676701744
Ivan Stronskyi Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Faculty of Social Development and Health, Department of Veterinary-Sanitary Inspection, Pekarska Str., 50, 79010, Lviv, Ukraine, Тel.: +380679696030
Volodymyr Salata Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Faculty of Social Development and Health, Department of Veterinary-Sanitary Inspection, Pekarska Str., 50, 79010, Lviv, Ukraine, Tel.: +380677288933
Yuriy Stronskyi Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Faculty of Veterinary Medicine, Department of normal and pathological morphology and forensic veterinary, Pekarska Str., 50, 79010, Lviv, Ukraine, Tel.: +380677288933
Larysa Kladnytska National University of Life and Environmental Sciences of Ukraine, Faculty Veterinary medicine, Department of Biochemistry and Physiology of Animals, Potechina Str., 16, 03127, Kyiv, Ukraine, Tel.: +380631866233
Mykola Kukhtyn Ternopil Ivan Pului National Technical University, Faculty of Engineering of Machines, Structures and Technologies, Department of Food Biotechnology and Chemistry, Ruska, 56, 46001, Ternopil, Ukraine, Tel.: +380972392057
Viktor Tomchuk National University of Life and Environmental Sciences of Ukraine, Faculty Veterinary medicine, Department of Biochemistry and Physiology of Animals, Potechina Str., 16, 03127, Kyiv, Ukraine, Tel.: +380672954481
Tetiana Kozytska Bogomolets National Medical University, Medical Faculty No 3, Department of Histology and Embryology, Shevchenko blvr., 13, 01601, Kyiv, Ukraine, Kyiv, Ukraine, Tel.: +380671354521
Tetiana Tokarchuk Institute of Higher Education Podolsk State University, Faculty of Veterinary Medicine and Technology in Animal Husbandry, Department of Animal Hygiene and Veterinary Support of the Cynological Service of the National Police of Ukraine, Shevchenko St., 13, 32300, Kamenets-Podolsky, Ukraine, Tel.: +380961034930

DOI:

https://doi.org/10.5219/1699

Keywords:

pork, meat quality, pig stress, cortisol, lactate

Abstract

This research aimed to determine the influence of stress of various etiologies in pigs caused by transportation and pre-slaughter conditions on meat quality. For this purpose, pigs were divided into 11 groups within two meat processing enterprises, depending on the duration of transportation (short, long without breaks and long with breaks) and the conditions of keeping animals before slaughter. Also, within the two groups were created two subgroups with pigs of different breeds. A total of 156 pigs were studied. Blood was collected from all pigs to determine cortisol and lactate levels, and a sample of meat from the longest back muscle. The pH of the meat was determined at different stages of its maturation, and the weight loss of the sample was determined. As a result of the research, it was found that the highest quality pork was obtained from pigs that experienced lower levels of stress before slaughter. Keeping pigs for 10 – 14 hours before slaughter without access to water and food resulted in higher stress levels, which were probably expressed in higher blood concentrations of cortisol and lactate. Pigs’ access to food and water during pre-slaughter retention allows for high-quality meat by reducing the influence of stress. Pigs’ access to water before pre-slaughter does not affect the stress level but positively affects the loss of meat weight during maturation. The higher the concentration of lactate in pigs’ blood, the faster the pH of the meat decreases after slaughter, which negatively affects its quality and moisture retention. If there is a long-term transport of pigs, there is no rest stop that can significantly reduce stress levels in pigs. Duration of transportation of pigs does not correlate with stress levels, as the conditions before slaughter content.

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