Effect of feeding strategy on digestive tract morphology and physiology of lake whitefish (Coregonus lavaretus)

Ostaszewska, Teresa; Krajnik, Katarzyna Alicja; Adamek‐Urbańska, Dobrochna; Kasprzak, Robert; Rzepkowska, Małgorzata; Luczynski, M.; Karczewska, Anna; Dąbrowski, Konrad

doi:10.1016/j.aquaculture.2018.07.021

Cited by 12 publications

(9 citation statements)

References 66 publications

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“…Fish weaned at 20 and 25 dph tended to have lower final body weight compared to those weaned at 15 days. A similar phenomenon was observed by Ostaszewska et al (2018).…”

Section: Discussionsupporting

confidence: 88%

“…The survival rate of the most successful group in the present study (FW15) was higher than other reported results (Beltran & Champigneulle, 1992;Bochert & Luft, 2019;Leithner & Wanzenbock, 2015) for a comparable length trial. Ostaszewska et al (2018) reported considerably lower survival at the end of a 35-day experiment (82.9%) for a feeding strategy similar to FW15 in the present study. Our higher survival rate (91.8%) could imply an effect of the commercial feed used.…”

Section: Discussioncontrasting

confidence: 56%

“…In our investigation, no group presented evidence of liver pathology (Table 2), and all showed a level of fat deposit within the normal range. Ostaszewska et al (2018) also did not find significant pathologies using similar feeding techniques, but a different diet (OtohimB1, Red Mariculture, USA). Escaffre and Bergot (1986), in a study of rainbow trout Oncorhynchus mykiss (Walbaum), reported that the diameter of hepatocyte nuclei reflects the nutritional status of the fish.…”

Section: Discussionmentioning

confidence: 89%

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Effect of feeding strategy on survival, growth, intestine development, and liver status of maraena whitefish Coregonus maraena larvae

Stejskal

Gebauer

Sebesta

et al. 2021

J World Aquaculture Soc

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Optimizing larval rearing protocols is critical to successful intensive fish culture. We compared the efficacy of feeding strategies for larvae of maraena whitefish Coregonus maraena, a promising candidate for intensive aquaculture. Survival, growth indicators, intestine development, and liver status were compared in larvae fed live feed, commercial dried feed, and weaned from live to dried feed at 5, 10, 15, 20, or 25 days post hatching (dph). Seven experimental groups in three repetitions used 5,250 larvae (2 dph, initial body weight = 7.4 ± 0.1 mg; initial total length = 13.0 ± 0.1 mm). This 30‐day trial showed initial weaning from live feed (Artemia sp.) to artificial diet after 15 days to be the optimal, with beneficial effects on growth, body weight, and larva yield. No differences in survival rate, size heterogeneity, and or condition factor were observed among groups. Live feed and weaning to artificial diet at the appropriate time was beneficial to intestine development, while feeding on artificial feed only was associated with severe intestine impairment. Liver pathology was not seen in any group.

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“…Fish weaned at 20 and 25 dph tended to have lower final body weight compared to those weaned at 15 days. A similar phenomenon was observed by Ostaszewska et al (2018).…”

Section: Discussionsupporting

confidence: 88%

Section: Discussioncontrasting

confidence: 56%

Section: Discussionmentioning

confidence: 89%

See 1 more Smart Citation

Effect of feeding strategy on survival, growth, intestine development, and liver status of maraena whitefish Coregonus maraena larvae

Stejskal

Gebauer

Sebesta

et al. 2021

J World Aquaculture Soc

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“…For C. lavaretus Ostaszewska et al () found the lowest mortality in the group fed exclusively Artemia sp., while the highest was recorded in the group fed a comercial dry diet exclusively. Analysis revealed no significant pathological alterations in the digestive tract and the intestinal epithelium developed at a similar rate in all groups.…”

Section: Discussionmentioning

confidence: 96%

Combined effect of temperature and live feed period on growth and survival of Coregonus maraena (Bloch, 1779) larvae

Bochert

Luft

2019

Aquac Res

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Despite intensive stocking programmes, wild Maraena whitefish Coregonus maraena (Bloch, 1779)-stocks are in danger of extinction in the Baltic sea region. Current aquaculture rearing methods in recirculating aquaculture systems (RAS) are lacking efficient protocols for transitioning larvae from endogenous to exogenous feeding. In this 34-day-experiment the offspring of wild fish was used. Maraena whitefish larvae were weaned at three different temperatures (15.9°C, 17.9°C, 19.7°C) and three feeding regimes, resulting in nine treatments. The first group received pure live feed (freshly hatched Artemia sp. nauplii) for 10 days and a 1:1-mixture of live and dry feed for 3 days. The second group received the live and dry feed mixture for 13 days and the third group directly received a commercial dry feed. All nine treatments were stocked in triplicate with 500 larvae per tank (19 ind. L −1 ). Feeding started 4 days post hatch. Survival was highest in the pure dry feed groups and lowest in the pure live feed groups. In contrast to growth, which was highest in the live feed groups and lowest in the dry feed group. Higher temperature increased growth in the live feed groups but had no effect on survival in all groups. These results will enhance the weaning of C. maraena in recirculation aquaculture. K E Y W O R D SCoregonus maraena, growth, intensive aquaculture, larval rearing, live-feed period, survival, temperature

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“…They are also important due to changes in the climate that have been observed in recent years, and their effects on reducing the occurrence of wild species like whitefish [12]. Despite the fact that the wild population of whitefish is decreasing, the production and sale of whitefish have increased in Europe from 2344 t in 2000 to 5310 t in 2017 [13] and this species has recently attracted considerable interest from fish producers [14]. This fish undoubtedly represents high value to consumers, and therefore production of this species could offer a valuable addition to commercial trout-breeding facilities [15].…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Pneumatic and Hand Stripping of Whitefish (Coregonus lavaretus) Eggs for Artificial Reproduction

Kowalski

Cejko

Grudniewska

et al. 2020

Animals

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We describe the technique of pneumatic stripping of whitefish (Coregonus lavaretus) eggs with the use of oxygen, nitrogen, and air. Eggs obtained via the traditional method (by pressing the abdominal surfaces) served as a control group. It was established that the gas flow rate during pneumatic stripping should not exceed 0.5 L∙min−1, since higher air flow resulted in increased post-spawning mortality. The pneumatic stripping method of egg collection was no faster than hand stripping; however, the time required per female was more consistent. It was found that the pH of the ovarian fluid obtained during hand and pneumatic stripping was not related to the success rate of fertilization. Pneumatic stripping resulted in a higher quality of collected eggs and a higher and more consistent hatching rate as compared with the hand-stripped samples, regardless of the gas used. The results presented here lead us to recommend the pneumatic method for obtaining eggs from whitefish, since it is a simple, reproducible method and improves the reproductive performance and developmental success of the fish eggs.

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Effect of feeding strategy on digestive tract morphology and physiology of lake whitefish (Coregonus lavaretus)

Cited by 12 publications

References 66 publications

Effect of feeding strategy on survival, growth, intestine development, and liver status of maraena whitefish Coregonus maraena larvae

Effect of feeding strategy on survival, growth, intestine development, and liver status of maraena whitefish Coregonus maraena larvae

Combined effect of temperature and live feed period on growth and survival of Coregonus maraena (Bloch, 1779) larvae

A Comparison of Pneumatic and Hand Stripping of Whitefish (Coregonus lavaretus) Eggs for Artificial Reproduction

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