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001-es BibID:BIBFORM114155
035-os BibID:(cikkazonosító)101702 (WoS)001102555300001 (Scopus)85169328786
Első szerző:Péter Géza
Cím:Effect of single-generation domestication of pikeperch on the performance of the offspring in conventional and pond recirculation aquaculture system / Géza Péter, Jovanka Lukic, Zsuzsanna Brlás-Molnár, László Ardó, Zoltán Horváth, András Rónyai, Péter Bársony, Uros Ljubobratovic
Dátum:2023
ISSN:2352-5134
Megjegyzések:Pikeperch aquaculture technologies have significantly improved, yet knowledge regarding the adaptation of pikeperch to captivity is very scarce. This study aimed to evaluate the survival, growth, stress response, and immune system function of the F2 generation of pikeperch subjected to pond nursing - Recirculating Aquaculture System (RAS) dry feed adaptation, with either RAS or pond grow-out. F2 generation in this research originated from the broodstock reared in the pond system during grow-out, while F1 originated from wild breeders. Critical points in fish growth were analyzed, including transport of pond-nursed juveniles to RAS at 42 DPH, dry feed habituation (42?52 DPH) and post-habituation (52?64 DPH) phase, as well as the on-grow/grow-out (64?154 DPH) phase. Our results showed better growth and survival of the F2 generation in comparison to F1 in pond grow-out. However, the F1 generation was superior in conventional RAS grow-out. Nevertheless, during RAS dry feed habituation, F1 fish were inferior, both in terms of growth and survival, in comparison to F2 fish. Stress and immunological marker analysis revealed higher stress sensitivity, accompanied by stronger immune system activation, in F2 generation in comparison to F1. This was manifested as higher cortisol and immunoglobulin response after moving fish from one system to another. Hypothetically, stronger stress and immune response might have induced better dry feed adaptation during the habituation phase in RAS, and better control of microbial growth in the grow-out environment with a higher microbial load, such as pond. On the other hand, according to the same hypothesis, in a cleaner grow-out environment such as RAS, fish with a weaker cortisol and immunological response would be at an advantage, since these fish are expected to have a richer intestinal microbiota that would eventually support better food digestion and growth. Assumed selection points shaping pikeperch response to farming have been discussed.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Domestication
Dry feed adaptation
Stress
Immune response
Grow-out
Megjelenés:Aquaculture Reports. - 32 (2023), p. 1-8. -
További szerzők:Lukić, Jovanka Brlás-Molnár Zsuzsanna Ardó László Horváth Zoltán Rónyai András Bársony Péter (1975-) (agrármérnök) Ljubobratović, Uroš
Pályázati támogatás:2.3.2-15-2016-00025
GINOP
652831(AQUAEXCEL2020)
Egyéb
451-03-68/2022-14/200042
Egyéb
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2.

001-es BibID:BIBFORM106999
035-os BibID:(cikkazonosító)347 (Scopus)85147794706
Első szerző:Péter Géza
Cím:Nursing of pike-perch (Sander lucioperca) in Recirculating Aquaculture System (RAS) provides growth advantage in juvenile growth phase / Géza Péter, Jovanka Lukić, René Alvestad, Zoltán Horváth, Zoltán Nagy, András Rónyai, Péter Bársony, Uroš Ljubobratović
Dátum:2023
ISSN:2076-2615
Megjegyzések:This study aimed to estimate the efficacy of two pike-perch juvenile production technologies: exclusive Recirculating Aquaculture System (RAS) culture (the RAS group) and pond larviculture with a transfer to the RAS at the 42nd day post-hatch (DPH). Both direct weaning on dry feed (the Pond-D group) and 10-day gradual weaning using bloodworms (the Pond-B group) after transfer to the RAS were evaluated in pond-nursed fry. Their survival and morphometric indices were monitored after the RAS habituation period (first 10 days), after the 18-day post-habituation period and after an additional 30 days of on-grow. Our results indicate a negative allometric growth of the pond-nursed fish during the nursing period, which was slower (p < 0.0001) in comparison to the RAS-nursed fry (16.3 ± 0.4 vs. 17.8 ± 0.7%/day). After transfer, these fish grew faster than the RAS-nursed fry (7.7 ± 0.1, 4.9 ± 0.5 and 6.1 ± 0.6 during habituation, 8.5 ± 0.6, 9.3 ± 0.5 and 6.7 ± 0.1%/day during post-habituation period, in the Pond-B, Pond-D and RAS groups, respectively). However, four weeks afterwards, the RAS-nursed fry were again superior in terms of growth (4.0 ± 0.1, 3.6 ± 0.2 and 4.6 ± 0.2%/day, for the Pond-B, Pond-D and RAS groups, respectively), and this was accompanied by a significantly lower feed conversion ratio in this group. Although the survival of the RAS-nursed fry during the nursing period was lower in comparison to the pond-reared fry (11.3 vs. 67.3%), the RAS seems to provide a long-term growth advantage.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
pike-perch
larviculture
intensive rearing
growth rate
survival
Megjelenés:Animals. - 13 : 3, (2023), p. 1-14. -
További szerzők:Lukić, Jovanka Alvestad, René Horváth Zoltán Nagy Zoltán Rónyai András Bársony Péter (1975-) (agrármérnök) Ljubobratović, Uroš
Pályázati támogatás:GINOP-2.3.2-15-2016-00025
GINOP
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:
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