Acta Ichthyologica et Piscatoria 2(2): 15-19, doi: 10.3750/AIP1972.02.2.02
Seasonal changes in blood serum of trout females Salmo trutta L
expand article infoC. Felińska

Corresponding author: C. Felińska

© C. Felińska.
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Citation: Felińska C (1972) Seasonal changes in blood serum of trout females Salmo trutta L. Acta Ichthyologica et Piscatoria 2(2): 15-19. https://doi.org/10.3750/AIP1972.02.2.02
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Abstract
The lipids, total and non-esterified cholesterol, total protein and the activity of malate-dehydrogenase (MDH) were determined in blood serum of trout females with gonads of III stage maturity, according to Mayer's scale, and during spawning period. The decrease of lipids by 42%, of total protein by 18% and the increase of total cholesterol content by 29% and of non-esterified cholesterol by 140% occurred during the spawning. Increased also the activity of malate-dehydrogenase.