Effect of Age on Structural Properties of Intramuscular Connective Tissue, Muscle Fibre, Collagen Content and Meat Tenderness in Pig longissimus lumborum muscle

Dorota Wojtysiak

Abstract

Changes in the structure and properties of the intramuscular connective tissue, muscle fibre size, collagen content and meat tenderness of m. longissimus lumborum during growth was studied in 45 Polish Large White (PLW) pigs slaughtered at 90, 150 and 210 days of age. The results show that the endomysial sheath in m. longissimus lumborum consists of collagen fibrils of wavy appearance which run in all directions and form a loose network. The arrangement of collagen fibrils in the endomysium and perimysium becomes denser and more regular with increasing age of pigs. In addition, the increase in endomysium and perimysium thickness was paralleled by a significant increase in muscle fibre diameter, as well as an increase in shear force value with chronological aging. In contrast, the percentage of collagen area in muscle structure and the amount of total collagen and amount of soluble collagen decreased gradually with age of pigs. In conclusion, the structural changes in the arrangement of collagen fibres in the architecture of intramusclular connective tissue, as well as the decrease in soluble collagen content in m. longissimus lumborum during growth of pigs are important factors influencing shear force value, and thus raw meat tenderness.
Author Dorota Wojtysiak (DoAS / HBZ-KRiAZ)
Dorota Wojtysiak,,
- Department of Animal Reproduction and Anatomy
Journal seriesFolia Biologica-Krakow, ISSN 0015-5497, (A 20 pkt)
Issue year2013
Vol61
No3/4
Pages221-226
Publication size in sheets0.5
Keywords in EnglishConnective tissue, collagen, tenderness, m. longissimus lumborum, pig
ASJC Classification1300 General Biochemistry, Genetics and Molecular Biology; 2700 General Medicine
DOIDOI:10.3409/fb61_3-4.221
URL http://www.isez.pan.krakow.pl/journals/folia/pdf/61(3-4)/61(3-4)_13.pdf
Internal identifierWHiBZ/2013/4
Languageen angielski
Score (nominal)20
Score sourcejournalList
Publication indicators WoS Citations = 10; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 0.768; WoS Impact Factor: 2013 = 0.478 (2) - 2013=0.642 (5)
Citation count*4 (2015-11-05)
Additional fields
FinansowanieSupported by the grant No. N311 086034 and DS-3253
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