OBTAINING STURGEON CAVIER FROM ACIPENSER NIKOLJUKINI BESTER IN UNCONVENTIONAL TERMS

Abstract

Aim. The aim is to study the technological processes of obtaining Bester caviar in the unconventional autumn-winter period.Methods. Extraction of caviar was carried out antemortem by the pillow method cutting the oviducts. The scheme of gonadotropic stimulation for all Bester females was the same: preliminary surfagon injection at the rate of 0.5 mkg/kg, while an acceptable dose of injection is 2.5 mkg per kilogram of fish weight. The object of the research was the female bester (Acipenser nikoljukini) grown in ponds at the age of 12-13 years with the polarization rate of 7-9, the caviar of which was extracted for the third time. The mass of fish and the yield of eggs were determined by the method of Pravdina I.F. The studies were performed in 4 experimental and 1 control variants.Results. We studied the possibility of extracting the caviar of the Bester females (Acipenser nikoljukini) inhabiting the ponds at the natural water temperature in the unconventional autumnwinter period. It is shown that the hybrid form of sturgeon fishes, here, the female bester, can spawn without gradual withdrawal to spawning temperature regime and without prior exposure in these conditions in contrast to the recommendations adopted in sturgeon breeding.Conclusion. We established the possibility of obtaining and producing fresh caviar of sturgeon fishes, especially when the demand increases during the pre-New Year holidays.

Keywords

• bester (acipenser nikoljukini)
• hybrid of beluga (huso huso l.) with sterlet (acipenser ruthenus l.)
• unconventional terms
• sturgeon caviar
• spawning regime
• pond inhabitants
• sturgeon breeding
• pituitary injection
• surfagon