EFFECT OF SORTING ON SELECTED REARING FACTORS OF PIKEPERCH SANDER LUCIOPERCA (L.)
2004; De Gruyter Open; Volume: 12; Issue: 1 Linguagem: Inglês
ISSN
2083-6139
AutoresZdzisław Zakęś, Agata Kowalska, S. Czerniak,
Tópico(s)Reproductive biology and impacts on aquatic species
ResumoThe aim of the experiment was to determine the effect sorting had on the effectiveness of rearing juvenile pikeperch in recirculation systems. The fish were reared in three groups - small specimens (grou pS-a verage body weight (BW) 28.5 g), large specimens (grou pL-B W 49.6 g), and unsorted specimens (group U - BW 38.8 g). After eight weeks of rearing, the average specific growth rate (SGR) for fish from group S was significantly higher than for those from the groups U and L (P 0.05). Thus, it appears that the sorting of juvenile pikeperch does not improve the rearing effectiveness for this species. 1
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