UDC 636.5: 611.73.013
DOI: 10.36871/vet.zoo.bio.202201001
Authors
Gleb V. Kondratov,
Viktor V. Stepanishin,
Stanislav G. Kumirov,
Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin”, Moscow, Russia
Abstract
Histological and morphological characteristics of skeletal muscles in chickens of the meat productivity
direction Cobb-500 and egg productivity direction Yurlovskaya golosistaya on the
8-th and 20-th days of postembryonic development were studied. The skeletal striated muscle tissue
of the studied bird obeys the general principles of myogenesis inherent in most animal species
and is characterized by signs of a definitive structure. It is shown that on the 8-th and 20-th days
of postembryonic ontogenesis, the quadriceps femoral muscle of the Yurlovskaya golosistaya breed
is ahead of the Cobb-500 cross in terms of the thickness of muscle fibers, while the opposite pattern
is established in terms of the thickness of muscle fiber bundles, as well as endomysium and perimysium
in the connective tissue component. The area of muscle tissue and the number of muscle
fibers in the field of vision in the studied periods of ontogenesis prevail in digital values in Cobb-500
compared to the Yurlovskaya golosistaya.
Based on the obtained morphometric parameters of muscle fibers, the concept of histogenesis of
skeletal muscles in poultry of egg and meat productivity directions is presented.
Keywords
skeletal muscle, quadriceps femoris, myogenesis, Cobb-500, Yurlovskaya golosistaya.
