DOI: 10.36871/vet.zoo.bio.202012004
UDC 636.5: 611.73.013
Authors
E. N. Borkhunova
Doctor of Biological Sciences, Professor of the Department of Animal
Anatomy and Histology named after Professor A. F. Klimov,
Moscow State Academy of Veterinary Medicine
and Biotechnology – MVA by K. I. Skryabin,
Moscow, Russian Federation
G. V. Kondratov
Candidate of Biological Sciences, Associate Professor of the Department of
Animal Anatomy and Histology named after Professor A. F. Klimov,
Moscow State Academy of Veterinary Medicine
and Biotechnology – MVA by K. I. Skryabin,
Moscow, Russian Federation
V. V. Stepanishin
Candidate of Biological Sciences, Associate Professor of the Department of
Animal Anatomy and Histology named after Professor A. F. Klimov,
Moscow State Academy of Veterinary Medicine
and Biotechnology – MVA by K. I. Skryabin,
Moscow, Russian Federation
Abstract
On the basis of histological and micromorphometric studies, general patterns and breed features
of the structural organization of the superficial pectoral muscle in meat (Smena-8, Cobb-500)
and egg (Hisex white, Andalusian blue) productivity directions are presented. The age of the examined
individuals is 29 days. The study evaluated the structural and morphometric parameters
of not only muscle fibers, but also the connective tissue component of the muscle under study. It is
shown that representatives of meat breeds surpass representatives of egg breeds in terms of muscle
fiber thickness and perimisia. At the same time, the indicators of the thickness of the endomysium,
bundles of muscle fibers and the area of muscle tissue had similar values in all studied birds. The
data obtained indicate the presence of both common morphological traits of muscle tissue, genetically
determined and stable regardless of productivity, and variable, which can change under the
influence of selection. The research results are important for biology, comparative, species and
breed morphology, as well as for veterinary and sanitary examination of chicken meat and in poultry
farming to assess the purity of the breed.
Keywords
skeletal muscle, muscle fiber, oenomisium, perimisium, Cobb-500, Hisex white, Andalusian
blue, superficial pectoral muscle.