CAPACITY FOR FATTY ACID OXIDATION BY THE BREAST MUSCLE OF THE STARLING (STURNUS ROSEUS) IN THE PRE- AND POST-MIGRATORY PERIODS

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Abstract
Studies on the capacity for fatty acid oxidation by the breast muscle homogenate of the migratory starling Sturnus roseus in the pre- and post-migratory periods were carried out, using sodium butyrate as the substrate. It was observed that the oxygen uptake due to the added butyrate in the manometric system during the premigratory period was considerably lower than that in the post-migratory period. During the premigratory period there was more oxygen uptake due to malate oxidation than in the complete system with added butyrate for fatty acid oxidation. The significance of the diminished capacity for fatty acid oxidation in the premigratory period is discussed.