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Turkish Journal of Fisheries and Aquatic Sciences 2018, Vol 18, Num, 3     (Pages: 425-433)

Effect of Parental Origin on Dry Feed Habituation and Intensive on-Growing Results in Pikeperch (Sander lucioperca) Offspring

Uroš Ljubobratović 1 ,Geza Péter 1 ,Zoltan Horvath 2 ,Tijana Ristović 1 ,Andràs Rónyai 1

1 Research Institute for Fisheries and Aquaculture NARIC HAKI, Anna Liget 8, 5540 Szarvas, Hungary
2 H&H Carpio Halászati Kft., H-7814 Ócsárd, Kossuth u. 7., Hungary
DOI : 10.4194/1303-2712-v18_3_08 Viewed : 306 - Downloaded : 197 In pikeperch culture, breeders are often sourced from natural stocks and possible benefits of using intensively cultured breeders to produce stocking material for intensive rearing purposes remain unknown. Therefore, the effect of parental origin on the success of pikeperch juvenile culture was investigated in present study. Two phases were investigated, weaning of pond-reared fry and initial on-grow of weaned juveniles, i.e. fingerling rearing phase. Two batches of 5-day-old larvae originating from intensively reared (CULTURE) and wild breeders (WILD) were stocked in two ponds for larval nursing. One month later, juveniles were harvested and stocked in five tanks per group for the evaluation of the success of habituation to intensive rearing conditions. At the age of 3 months, the 6-week trial on intensive on-grow performance was established. WILD fish exhibited a higher habituation success and survival during the period of habituation to the formulated diets than CULTURE fish. After 6 weeks of intensive on-grow, CULTURE juveniles exhibited a significantly higher specific growth rate. It seems that early domestication does not have positive effect on the weaning of pond-nursed juveniles. However, juveniles originating from cultured broodstock appear to be more appropriate stocking material for intensive on-grow. Keywords : Domestication, pikeperch juveniles, RAS