Changes in breast muscle composition in the young chick

  1. Iñarrea, P. 1
  2. González, J. 1
  3. Andrades, M.S. 1
  4. Palacios, J. 1
  1. 1 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

Revista:
Poultry Science Symposium Series

ISSN: 0966-7318

Año de publicación: 1990

Volumen: 69

Número: 8

Páginas: 1325-1330

Tipo: Artículo

DOI: 10.3382/PS.0691325 PMID: 1700407 SCOPUS: 2-s2.0-0025468876 WoS: WOS:A1990EB21900014 GOOGLE SCHOLAR

Resumen

Nitrogen, protein and nucleic acids concentrations in the breast muscle (pectoralis thoracica), composition of sarcoplasmic and myofibrillar protein, and serum level of 3-methylhistidine were determined in female Warren chicks at 2, 3, 4 and 6 wk of age. Sarcoplasmic nitrogen and protein concentrations showed opposite changes to those presented by myofibrillar concentrations, with a maximum value at 3 and 4 wk of age and decreasing at 6 wk of age. Ribonucleic acid concentration decreased and protein/ribonucleic acid ratio increased from 2 to 6 wk of age. Differences were observed in the electrophoretical banding pattern of myofibrillar protein at 3 wk of age. Serum level of 3-methylhistidine increased from 2 to 4 wk of age (from .71 to 3.25 nmol/g), and no change was observed at 6 wk of age (3.46 nmol/g).