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Histochemical Skeletal Muscle Fibre Types in the Sheep
Author(s) -
Peinado B.,
Latorre R.,
VáquezAutón J. M.,
Poto A.,
Ramírez G.,
LópezAlbors O.,
Moreno F.,
Gil F.
Publication year - 2004
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1111/j.1439-0264.2004.00545.x
Subject(s) - fibre type , skeletal muscle , skeletal muscle fibers , biology , anatomy , muscle fibre , pathology , medicine
Summary In this study, the differentiation of adult and postnatal muscle fibres in sheep longissimus thoracis muscle has been characterized. By using a variety of histochemical methods, we have investigated the m‐ATPase and metabolic activities of skeletal muscle fibres in adult sheep and lambs aged between 1 day and 3 months. Types I, IIA, IIB and IIC fibres were identified. The results showed that the interpretation of the fibre type composition depends on the methods used. The findings also revealed that the fibre types IIA and IIB can be separated histochemically in sheep by using the correct m‐ATPase technique, even at early stages of postnatal development, and that the origin of the four different fibres of the adult can be traced back to early postnatal stages.