Abstract
Concentrations of RNA and DNA, determined in two rainbow trout strains, Cornec and Mirwart, over a period of 9 months, were used to assess and characterize growth potential. More rapid growth and higher muscle nucleic acid concentrations in the Cornac strain trout, suggest a more metabolically active strain with higher rates of protein synthesis. On the other hand, the higher concentration of muscle DNA, in the Cornec strain, suggests a smaller cell size and a larger number of cells per unit weight issue. The faster decrease of DNA concentration, with increasing body weight, in the Mirwart strain, reflected a lower percentage of hyperplasia and consequently a lower capacity for growth.
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Valente, L., Gomes, E. & Fauconneau, B. Biochemical growth characterization of fast and slow-growing rainbow trout strains: effect of cell proliferation and size. Fish Physiology and Biochemistry 18, 213–224 (1998). https://doi.org/10.1023/A:1007774929535
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DOI: https://doi.org/10.1023/A:1007774929535