EXPERIMENTATION OF SPERM PROTECTIVE MEDIUMS FOR ARTIFICIAL CROSSBREEDING OF SALVELINUS FONTINALIS М. WITH SALMO TRUTTA M. FARIO L.

Vasil Atanasov, Stanimir Dimitrov

Abstract: Hybridization experiments with salmonids were carried out with several world known sperm activating mediums for artificial insemination of eggs from freshwater fishes. The purpose of these experiments was to study the viability, performance traits and the fertility of hybrids. We achieved 100% fertilizing brook trout (Salvelinus fontinalis М.)’s eggs with semen from brown trout (Salmo trutta m. fario L.) using of medium 49282 - single or along with extender 49283, but embryonic mortality was 100%. The ultimate variant ( ♀ Salvelinus fontinalis М. Х ♂ Salmo trutta m. fario L.) was successful for optimize crossbreeding. Medium 49282 have the best sperm activating effect and may use along with extender 49283 for artificial insemination to produce trout hybrids. Obtained fry are more vital and energetic with faster grow and developing. We
made basic definition of produced trout hybrids – soft snout, low situated eyes and typicalness “tiger” color. The experiment is continuing, it is evident that more research is necessary before the potential value of obtained hybrids for fish farming can be properly assessed.

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Date published: 2023-02-28