English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Changes in the biophysical traits of the pectoral muscles of chickens with deep pectoral myopathy (DPM) were analysed with selected instrumental techniques. For comparative purposes, the research used both samples of pectoralis minor muscles of 39–42-day-old Cobb 500 broiler chickens and pectoralis major muscles with DPM symptoms, as well. Computer Image Analysis (CIA) revealed that the pectoral minor muscles with DPM were characterised by smaller area of muscle fibres’ cross-sectional area (CSA) than normal muscles. A longitudinal section of DPM muscles also confirmed the presence of large spaces between the bundles of muscle fibres. The results of Differential Scanning Calorimetry (DSC) analysis showed that all the temperatures of transformations referring to minor muscles with myopathy symptoms were significantly lower than the temperatures noted in the muscles without DPM. The enthalpy values observed in both pectoral muscles with DPM were significantly lower than the values noted in healthy muscles. The water dynamics analysed by low-field NMR showed that the values of spin–lattice relaxation time T1 in p. major muscles without DPM were higher than the values in the muscles with the defect. On the other hand, an inverse dependence was observed in p. minor muscles samples. The value of the long relaxation time T22 was reduced in both muscles with pathological lesions. In conclusion, three advanced analytical tools used in this study (CIA, DSC, and LF NMR) provide new insight into the characterization of protein changes observed in the pectoral muscles of chicken broilers with DPM.

The effect of deep pectoral myopathy on the properties of broiler chicken muscles characterised by selected instrumental techniques