Wybrane wskaźniki podchowu samic i samców sandacza (Sander lucioperca L.) przetrzymywanych w systemach recyrkulacyjnych

• Autorzy: Kowalska A. , Zakes Z.

Warianty tytułu

EN

Selected rearing indicators of male and female pikeperch (Sander lucioperca L.) held in recirculating aquaculture systems

• Języki publikacji: PL

Abstrakty

EN

The aim of the study was to identify the dependence between the rearing indicators of European pikeperch, Sander lucioperca (L.), (body weight range 15-2000 g, age 0+, 1 +, 2+, 3+) reared in closed recirculating aquaculture systems (RAS) and fish sex. The study material was obtained from artificial reproduction, and the sex of the fish was determined after they were sacrificed. Fish body weight and body length, the body weight coefficient of variation CV, the K and Fulton coefficients of condition, and the hepatosomatic index HSI of males and females were similar in the analyzed fish size groups. Statistically significant differences between the sexes were noted in the absolute weight of the viscera in fish aged 3+ (female body weight = 2.1 kg; male body weight = 1.8 kg), which was 89.2 g (males) and 211.9 g (females) (P < 0.05). The values of VSI in this fish size class were significantly higher among females than males (14.3 and 10.1%, respectively) (P < 0.05). The results permit concluding that the potential development and implementation of production techniques for single-sex pikeperch populations might be economically justified and more advantageous for longer-term rearing of this species in RAS.

Słowa kluczowe

PL

rybactwo; ryby; sandacz; Stizostedion lucioperca; samice; samce; podchow zwierzat; wskazniki somatyczne; dlugosc ciala; masa ciala; zmiany masy ciala; kondycja zwierzat; system recyrkulacyjny

• Wydawca: -
• Czasopismo: Komunikaty Rybackie
• Rocznik: 2014
• Numer: 6
• Opis fizyczny: s.1-6,tab.,wykr.,bibliogr.

Twórcy

autor

Kowalska A.

• Zakład Akwakultury, Instytut Rybactwa Śródlądowego w Olsztynie, Olsztyn

autor

Zakes Z.

• Zakład Akwakultury, Instytut Rybactwa Śródlądowego w Olsztynie, Olsztyn

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