Improving the survival, growth and hemolymph ion maintenance of early juvenile blue swimmer crabs, Portunus pelagicus, at hypo- and hyper-osmotic conditions through dietary long chain PUFA supplementation

Romano, Nicholas; Zeng, Chaoshu; Noordin, Noordiyana Mat; Ng, Wing‐Keong

doi:10.1016/j.aquaculture.2012.02.013

Cited by 17 publications

(11 citation statements)

References 22 publications

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“…It is also well‐reported that HUFA, especially EPA and DHA, is important for the maximum survival of shrimps (Lim, Ako, Brown & Hahn ; Zhou, Li, Liu, Chi & Yang ). Previous study also indicated that HUFA is important nutrients to marine crustaceans including being an integral component of cell membranes and a precursor for eicosanoids necessary for moulting (Romano, Zeng, Noordin & Ng ). Ibeas et al .…”

Section: Discussionmentioning

confidence: 94%

Effects of dietary DHA/EPA ratios on growth performance, survival and fatty acid composition of juvenile swimming crab (Portunus trituberculatus)

Wang

Han

et al. 2016

Aquac Res

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This study was conducted to investigate the effects of dietary docosahexaenoic to eicosapentaenoic acid (DHA/EPA) ratios on growth performance, survival and fatty acid composition of juvenile swimming crab (Portunus trituberculatus). Four isonitrogenous and isoenergetic experimental diets were formulated to contain different DHA/EPA ratios (0.70, 0.84, 1.06 and 1.25). There were three replicates (15 crabs per replicate) for each diet treatment. The crabs were fed (about 6-8% body weight) twice daily for 8 weeks. A good growth performance and feed utilization were observed in swimming crabs fed the diets with DHA/EPA ratios of 0.70 and 0.84. Crabs fed diet with 0.70 DHA/EPA ratio showed a significantly higher weight gain (WG) compared with the crabs fed the diet with DHA/EPA ratio of 1.25 (P < 0.05). The result of this study showed that the survival increased with decreasing the ratio of DHA/EPA. The DHA/EPA ratios in polar lipid from tissues were influenced by the dietary DHA/ EPA ratios. Results of this study indicated that the growth performance and survival of juvenile swimming crab are correlated to the DHA/EPA ratio in the diets, and the best growth performance and survival were achieved with the ratios of 0.70-0.84.

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Section: Discussionmentioning

confidence: 94%

Effects of dietary DHA/EPA ratios on growth performance, survival and fatty acid composition of juvenile swimming crab (Portunus trituberculatus)

Wang

Han

et al. 2016

Aquac Res

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“…During this time, the majority of crabs molted at least four times to reach the fifth crab stage, with some reaching the sixth juvenile stage, which is approximately half way through their development until market size. Since it is known that P. pelagicus require LC-PUFA for their survival and growth [19], the ability of the crabs to grow well on the various tested vegetable oils may have been due to residual FO from the fishmeal that was included as the dominant protein source (at 500 g kg -1 ) leading to a total n-3 LC-PUFA of 9.88 to 11.30%. Indeed, more recently when dietary LC-PUFA was deficient in the diets of P. pelagicus early juveniles, there was a steep drop in their survival after only three molts along with significantly lower growth compared diets containing LC-PUFA of only 3.7% [2].…”

Section: Discussionmentioning

confidence: 99%

“…Kim et al [18] noted that residual FO (from fishmeal) led to the presence of some long-chain polyunsaturated fatty acids (LC-PUFA) (of 5.9%), which may have contributed to the relative success of using dietary vegetable oils. Indeed, dietary LC-PUFA deficiencies, due to the defattening of fishmeal and providing no FO, caused substantially lower survival and growth of P. pelagicus juveniles compared to when FO was added in relatively small amounts at 3% [19] or 1% [2]. On the other hand, when marine protein sources were absent in the diets of the Chinese mitten crab Eriocheir sinensis, growth was better for those fed SBO, rapeseed oil, coconut oil or beef tallow-based diets compared to crabs fed a FO-based diet [20].…”

Section: Introductionmentioning

confidence: 99%

Effects of a Total Dietary Fish Oil Replacement with Vegetable Oils to the Survival, Growth and Development of the Blue Swimming Crab Portunus Pelagicus Early Juveniles

Romano¹

2017

JAMB

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The feasibility of different vegetable based lipids as a complete replacement to dietary fish oil (FO) to blue swimmer crab Portunus pelagicus juveniles was assessed. A total of five iso-nitrogenous and iso-lipidic diets were formulated to contain FO, soybean oil (SBO), linseed oil (LSO), canola oil (CO), or palm oil (PO) as the main lipid source. The diets were fed to first staged juvenile crabs (total of 45 replicate crabs/treatment) over at least four molts. After 35 days, final sizes and weights were determined, and then measured for whole-body cholesterol. Crabs fed the FO, SBO, LSO, or CO-based diets showed similar specific growth rates (SGR) (p > 0.05) for carapace length and width, which was significantly higher (p < 0.05) compared to crabs in the dietary PO treatment. Whole-body cholesterol content was significantly lower for crabs fed the PO-based diets, which may have contributed to their poorer performance, compared to those fed the FO, LSO or CO-based diets. Results indicate SBO, LSO or CO can totally replace FO, which may improve cost-effective and sustainable diets for portunid crabs. Further research into the use of dietary PO blends with other vegetable oils should be conducted.

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“…To test whether different dietary PL levels resulted in variations in overall physiological condition and stress resistance of the remaining crabs, 15 randomly selected C4 crabs from each dietary treatment were subject to sudden osmotic shock. Past research with early P. pelagicus juveniles, under a broad range of salinities (5-45 g/L), has confirmed that this species is a weak osmoregulator and suggested that a salinity of 30 g/L is optimal, while ≤ 15 g/L is stressful (Romano & Zeng, 2006;Romano, Zeng, Noordin, & Ng, 2012). Based on a pilot study in this laboratory, a salinity of 7 g/L was chosen in this study to test stress resistance of early P. pelagicus juveniles fed diets with different PL levels.…”

Section: Feeding Trialmentioning

confidence: 99%

Progress in diet development for blue swimmer crab,Portunus pelagicus, juveniles: Effect of dietary phospholipid on survival, development, growth and resistance to osmotic shock

2018

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This study examined the effects of dietary phospholipid (PL) level on survival, growth, development and resistance to osmotic shock of early blue swimmer crab, Portunus pelagicus, juveniles. Six iso‐lipidic diets formulated to contain PL at 0 (basal), 30, 60, 90, 120 and 150 g/kg (dry matter) were offered to first‐stage crabs (C1) until they achieved C4 stage. Highest survival (93.3%) was achieved by crabs fed diets with PL supplementation levels of 120 and 150 g/kg. Crabs fed diets with PL supplementation levels of 120 and 150 g/kg developed to C4, on average, in 14 days, which was significantly faster (p < 0.05) than crabs in all other treatments. Crabs fed with the same diets also had significant greater dry weight than crabs in other treatments (p < 0.01), except those fed the diet supplemented with 90 g/kg PL (p > 0.05). Dietary PL level markedly influenced survival of juveniles exposed to a stress test of low salinity (7 g/L); most crabs (>87%) fed diets supplemented with PL at 120 and 150 g/kg survived to the end of stress test. Dietary PL levels of 120 g/kg and 150 g/kg are suggested to maximize productivity in early P. pelagicus culture.

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Improving the survival, growth and hemolymph ion maintenance of early juvenile blue swimmer crabs, Portunus pelagicus, at hypo- and hyper-osmotic conditions through dietary long chain PUFA supplementation

Cited by 17 publications

References 22 publications

Effects of dietary DHA/EPA ratios on growth performance, survival and fatty acid composition of juvenile swimming crab (Portunus trituberculatus)

Effects of dietary DHA/EPA ratios on growth performance, survival and fatty acid composition of juvenile swimming crab (Portunus trituberculatus)

Effects of a Total Dietary Fish Oil Replacement with Vegetable Oils to the Survival, Growth and Development of the Blue Swimming Crab Portunus Pelagicus Early Juveniles

Progress in diet development for blue swimmer crab,Portunus pelagicus, juveniles: Effect of dietary phospholipid on survival, development, growth and resistance to osmotic shock

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