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Changes in the muscle condition of female Zebra Finches Poephila guttata during egg laying and the role of protein storage in bird skeletal muscle
Author(s) -
HOUSTON DAVID C.,
DONNAN DAVID,
JONES PETER,
HAMILTON IAN,
OSBORNE DAN
Publication year - 1995
Publication title -
ibis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.933
H-Index - 80
eISSN - 1474-919X
pISSN - 0019-1019
DOI - 10.1111/j.1474-919x.1995.tb08028.x
Subject(s) - biology , muscle protein , zoology , taeniopygia , muscle tissue , skeletal muscle , pectoral muscle , anatomy , zebra finch , neuroscience
Samples of pectoral muscle tissue from Zebra Finches Poephila guttata were taken from birds at various stages of egg laying. As egg laying progressed, there was a significant loss of both water‐soluble and alkali‐soluble proteins. Gel filtration of the water‐soluble proteins showed three peaks, only one of which changed significantly during the laving cycle. This was a high‐molecular‐weight protein that declined in concentration during the period of egg laying. This protein may function as a reserve, enabling female birds to provide amino acids for egg protein production from their muscle tissue without impairing normal muscle function.