The Bioenergy Metabolism During Embriogenesis of Rainbow Trout

V. ATANASSOV1, J. MITEV1, Y. STAYKOV1, T. MITEVA1 and M. MINCHEV2

1 Thracian University, BG-6000 Stara Zagora, Bulgaria
2 Ministry of Environment and Waters Regional Inspectorate, BG-6000 Stara Zagora, Bulgaria

Abstract

ATANASSOV, V., J. MITEV, Y. STAYKOV, T. MITEVA and M. MINCHEV, 1999. The bioenergy metabolism during embriogenesis of rainbow trout. Bulg. J. Agric.Sci., 5: 917-922

A biological experiment with Salmo gairdneri irideus G. incubated in Californian hatcheries with water flow rate of 1.5-2.0 l/min has been carried out in the "Boukovets" state Forestry in order to determine the ecological purity of water in the region. The bioenergy metabolism of the growing embryos was with normal intensity for the species and the embrio-growth continued for about 360 degree days. The following biochemical parameters were being recorded: oxygen consumption, cytochrome system activity hemoglobin, ATPhase activity inorganic phosphate cholesterol, glycogen fructoso 1,6 diphosphate, piruvate, lactate, LDH, free and obliterated sulphhydrilic groups. The results from the experiment confirm the ecological purity of water in the region and normal Salmo gairdneri irideus G. embryo bioenergy metabolism parameters have been observed and the number of hatched larvae recorded at a 30-day age is 48,7% of the number of spawn beads laid in the beginning.

Key words: bioenergy metabolism, embryos, larvae, Sallmo gardner irideus G., waters, ecologically pure
Abbreviations: LDH lactatdehydrogenase