Oral ingestion of collagen peptide causes change in width of the perimysiumof the chicken iliotibialis lateralis muscle

[摘要] References(22)Cited-By(1)Skeletal muscle is mainly composed of myofibers and intramuscular connectivetissue. Bundles composed of many myofibers, with each myofiber sheathed in connectivetissue called the endomysium, are packed in the perimysium, which occupies the vast bulkof the intramuscular connective tissue. The perimysium is a major determination factor formuscle texture. Some studies have reported that collagen peptide (Col-Pep) ingestionimproves the connective tissue architecture, such as the tendon and dermis. The presentstudy evaluated the effects of Col-Pep ingestion on the chicken iliotibialis lateralis(ITL) muscle. Chicks were allocated to three groups: the 0.15% or 0.3% Col-Pep groups anda control group. Col-Pep was administered by mixing in with commercial food. On day 49,the ITL muscles were analyzed by morphological observation and the textural property test.The width of the perimysium in the 0.3% Col-Pep group was significantly larger than othertwo groups. Although scanning electron microscopic observations did not reveal anydifferences in the architecture of the endomysium, elastic improvement of the ITL musclewas observed as suggested by an increase of the width of perimysium and improvedrheological properties. Our results indicate that ingestion of Col-Pep improves thetextural property of ITL muscle of chickens by changing structure of the perimysium.

[学科分类] 兽医学

[关键词] chicken;collagen peptide;perimysium;skeletal muscle;textural property