Myopathy as a Destabilizing Factor of Meat Quality Formation

Abstract

This review paper is devoted to myopathy of slaughter animals and poultry, and examines a relationship between fast growth of muscle tissue in hybrid pigs, broiler chickens and turkey, and high frequency of detection of spontaneous or idiopathic myopathies. The development of myopathy reduces consumer and technological properties of meat, and leads to emergence of different pathological conditions (PSE or RSE meat, «destructured meat», «white» or «green» meat, punctate hemorrhage, «wooden breast» and others). Two types of myopathic conditions are examined: myopathies caused by stress in animals and nutritional myopathies, which contribution to meat quality deterioration seems to be determinative. It is shown that the basis of the mechanism of the myopathy development is the mechanism of the successive changes in muscle tissue: damage of cell membranes and release of mitochondrial calcium, which causes hypercontraction, dystrophic changes, atrophy and necrosis of muscle fibers. To alleviate the damaging effect of two types of myopathies, different substances-adaptogens (selenium, vitamin E, flavonoids and others) can be used. It is stated that the requirements of animals in adaptogens change with an increase in the indicators of their productivity. UDC 636.4.084

Effects of Effective Microorganisms on Meat Quality, Microstructure of the Longissimus Lumborum Muscle, and Electrophoretic Protein Separation in Pigs Fed on Different Diets

“…This is confirmed by previous research by Bogucka et al [ 47 ], who also showed a significant beneficial effect adding a synbiotic to chickens’ diet had on the percentage of split fibers. Despite the inconclusive results of Semenova et al [ 58 ], they recommend the use of feed additives (selenium, vitamin E, flavonoids, etc.) in order to reduce the occurrence of pathological changes, which appears to be decisively linked with the quality of meat.…”

Deep Pectoral Myopathy in Broiler Chicken Obtained From Supermarket - Case Report, Literature Review and Preventive Measures

“…A major factor for the occurrence of DPM is undoubtedly rearing conditions. It is well known that the live weight of broiler chickens and turkey increased by more than two times over the last 50 years mainly due to the size of pectoral muscles (Semenova et al, 2019). An increase in incidence of DPM is connected with the increase in growth rate and muscle size.…”

Postslaughter state of muscle tissue of pigs depending on the duration of pre-slaughter fasting

“…The negative correlation between the quantity of muscle tissue in a carcass and pork quality is becoming more and more evident [1]. The genetic progress increased the burden on fast-growing slaughter animals, led to morphological and biochemical modifications of muscle tissue and, as a consequence, to deterioration of consumer properties of meat [2].…”

“…Muscle tissue lesions, in which pathological changes in muscle fibers are observed ranging from degenerative changes to postmortem development of hypertonus giant fibers, are assigned to the main signs of myopathy (Greek: mys, my[os] muscle + pathos: suffering, disease) [2]. All animal species and even insects are prone to myopathy.…”