Co-feeding as a weaning procedure in sterlet (<i>Acipenser ruthenus</i>L.) larvae

Rónyai, András; Feledi, Tibor

doi:10.1111/j.1365-2109.2012.03167.x

Cited by 8 publications

(10 citation statements)

References 9 publications

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“…The effect on larval growth is an important parameter to consider in evaluating weaning strategies (Mata‐Sotres et al., ; Pradhan et al., ; Rónyai & Feledi, ; Rosenlund et al., ). However, at this stage of production, larvae growth may not be as critical as survival, as differences in larvae size may be compensated for later in the rearing process (Cahu & Zambonino Infante, ; Rosenlund et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, larvae of lower body weight could be more susceptible to stress and mortality postmetamorphosis in some species (Liu et al., ). In contrast, some species showed higher survival in smaller larvae (Curnow et al., ; Palinska‐Zarska et al., ; Rónyai & Feledi, ). In the present study, peled larvae fed solely on Artemia nauplii, along with all groups weaned after 20 dph, showed the best results on final BW.…”

Section: Discussionmentioning

confidence: 99%

“…Peled is naturally fed mainly on copepods, cladocerans and rotifers (Furgala‐Selezniow et al., ). Combined feeding of live prey, chiefly Artemia sp, and commercially formulated feed, referred to as co‐feeding, is a strategy used to enhance larval performance beyond that obtained by feeding either type of feed alone (Canavate & Díaz, ; Chepkirui‐Boit et al., ; Rónyai & Feledi, ; Rosenlund, Stoss, & Talbot, ; Van, Dierckens, & Nguyen, ). Co‐feeding is intended to improve larvae nutrition and condition to more readily accept commercial diets when live feed is withdrawn.…”

Section: Introductionmentioning

confidence: 99%

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Combined effect of weaning time and co-feeding duration on growth and survival of peled Coregonus peled (Gmelin) larvae

et al. 2017

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The study investigated the combined effect of weaning from live feed to a commercial dry pellet at 10, 15, 20, 25 or 30 days posthatching (dph) and co‐feeding for 1, 3 or 6 days on survival and growth of Coregonus peled larvae. Additional groups fed only live Artemia sp. nauplii (ART), and only Biomar LARVIVA ProWean 100 (DRY) were included. A final survival rate of 66.4%–85.5% was observed in groups weaned after 20 dph. Final body weight (BW) and total length (TL) were significantly lower in groups weaned at 10 and 15 dph, regardless of the duration of co‐feeding. Larvae reached 29–37 mg BW and TL of 17.7–19.0 mm in groups weaned at 20, 25 and 30 dph. The recommended minimum duration of feeding with live food, based on these results, is 20 days. Based on the significantly higher yield of larvae weaned after 20 dph irrespective of co‐feeding duration, it can be concluded that abrupt weaning to dry food after 20 days of feeding with live prey can provide adequate production while reducing the effort and costs associated with live feed.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combined effect of weaning time and co-feeding duration on growth and survival of peled Coregonus peled (Gmelin) larvae

et al. 2017

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“…Nutrition plays a great role in fish growth and health (Bronzi et al 1999). Practices to provide only formulated feeds for sturgeons from the onset of exogenous feeding has led to drawbacks such as suboptimal survival and nearly complete mortality (Ware et al 2006;Mohler et al 2012;Ronyai and Feledi 2012). Thus, most of the sturgeons are cultured with live feed (e.g., Artemia or tubificids) as part of their first feeding regime.…”

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confidence: 98%

Production and Enrichment of Chironomid Larva with Different Levels of Vitamin C and Effects on Performance of Persian Sturgeon Larvae

et al. 2014

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Chironomid larvae have a high reproduction capacity. Because of their excellent nutritional quality, they have great potential in larval fish nutrition, specially bottom feeders like sturgeons. In this study, indoor production of Chironomus riparius was performed by controlling the physicochemical factors and developing an appropriate condition for this insect to complete the life cycle. Enrichment of lava was conducted by adding 0 (C0), 100 (C100), or 1000 (C1000) mg of ascorbic acid to 1 kg of chicken manure (as substrate). Ascorbic acid analysis of chironomid larva showed significant differences among the groups: 74.2 μg/g for C0, 325.0 μg/g for C100, and 779.9 for C1000. In the second experiment, enriched chironomids were fed to larval Persian Sturgeon Acipenser persicus and were compared with sturgeons fed live cladocerans, Daphnia, which are regulary used in hatcheries. Length and weight measurements after 14 d of the experimental period showed no significant differences in growth performance. Analysis of ascorbic acid in Persian Sturgeon viscera also showed no significant differences between the groups. In conclusion, chironomids could be cultured indoors and can be enriched to meet the nutritional requirements of fish. We found ascorbic acid did not have a signifucant effect on Persian Sturgeon larval feeding, but longer feeding periods and implication of unfavorable physicochemical conditions or causing stress tests might demonstrate the beneficial effects of this vitamin.

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“…From 15 dph, fish were also gradually weaned onto artificial diets as described by Rónyai and Feledi (2013), initially Biomar Larviva ProWean 300 (BioMar Group, Aarhus, Denmark), and then 500, as larval size allowed ingestion of larger particle sizes. Following stocking, the water temperature was gradually increased by 1 or 2°C/day in each system, according to the temperatures desired (15, 20, or 25°C) which were achieved at 10 dph, when average larval weights were determined by the individually weighing of 30 specimens.…”

Section: Specific Experimental Proceduresmentioning

confidence: 99%

How do long-term effects of temperature influence sex ratio, somatic and gonadal development in juvenile sterlet (Acipenser ruthenusL.)-An additional climate change consequence?

et al. 2018

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In this paper, the effects of temperature on the production performance values, as well as on sex differentiation and gonad development, of juvenile sterlet were investigated. For this purpose, fry were reared in the recirculating aquaculture system at three different temperatures (15, 20, and 25°C) in four replicate groups each for 140 days (10-150 dph). Fish were fed mainly with commercial diet. The growth rate in this period was significantly affected by temperature. The best performance values in terms of daily growth rate, thermal growth coefficient, and yield were registered at 20°C, indicating that this value to be near, or close to, the optimal for juvenile sterlet. Gonad samples were taken for histological analysis which revealed that the increased temperature did not cause significant differences in the sex ratio between treatments, but at 25°C resulted in significant deviation from the theoretically expected 1:1 gender ratio to favouring males. We have also found that increased temperature at 25°C accelerated germ cell development. These results indicate that rearing of sterlet juveniles at about 20°C temperature could be considered optimal both from aquaculture, as well as from species conservation viewpoints. K E Y W O R D SAcipenser ruthenus, sex ratio, somatic development, temperature

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Co-feeding as a weaning procedure in sterlet (Acipenser ruthenusL.) larvae

Cited by 8 publications

References 9 publications

Combined effect of weaning time and co-feeding duration on growth and survival of peled Coregonus peled (Gmelin) larvae

Combined effect of weaning time and co-feeding duration on growth and survival of peled Coregonus peled (Gmelin) larvae

Production and Enrichment of Chironomid Larva with Different Levels of Vitamin C and Effects on Performance of Persian Sturgeon Larvae

How do long-term effects of temperature influence sex ratio, somatic and gonadal development in juvenile sterlet (Acipenser ruthenusL.)-An additional climate change consequence?

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