Effect of soybean phospholipid supplementation in formulated microdiets and live food on foregut and liver histological changes of Pelteobagrus fulvidraco larvae

Shen, Lu; Zhao, Na; Zhao, Ayong; He, Rongxin

doi:10.1016/j.aquaculture.2007.12.007

Cited by 30 publications

(19 citation statements)

References 26 publications

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“…However, when weaned at 3 dph, P. fulvidraco larvae showed the low survival rate and high coefficient of variation of final body weight (Wang et al., 2005). When weaned at 6 dph, P. fulvidraco larvae could have a high survival rate, but the larvae showed lower length and wet weight at 12 dph (Lu et al., 2008). Yang et al.…”

Section: Discussionmentioning

confidence: 99%

Ontogeny of the stomach in yellow catfish (Pelteobagrus fulvidraco): detection and quantifictation of pepsinogen and H⁺/K⁺‐ATPase gene expression

Gao

Yang

et al. 2011

Animal Physiology Nutrition

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Yellow catfish (Pelteobagrus fulvidraco) is an important commercial species with high aquaculture potential in China. To better understand the process of digestive functioning of gastric gland development during the larval from 1 dph (day post-hatching) to 30 dph, real-time PCR was used to detect and quantify the pepsinogen and H(+) /K(+) -ATPase gene expression in P. fulvidraco. These data were also compared with the adult situation. The results showed that the expression of pepsinogen and H(+) /K(+) -ATPase genes in P. fulvidraco larvae both started at 1 dph, though the expression level was very low until 3 dph. The quantification of pepsinogen gene expression increased significantly from 4 to 8 dph, increased fluctuantly from 8 to 23 dph and rose sharply from 23 to 30 dph. In comparison with adult fish, there were no significant differences with larvae at 5 and 23 dph. However, data of 10 and 30 dph larvae were obviously higher than those of adult group. H(+) /K(+) -ATPase gene expression increased linearly from 1 to 30 dph. However, it was significantly lower than that of adult. The results show that P. fulvidraco larvae have an earlier functional stomach, though the function of the stomach is still not perfect. There is a gradual acidification environment within the stomach during the P. fulvidraco larvae development. Based on these results, we suggest that the weaning time for P. fulvidraco larvae would be much better after 23 dph.

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Section: Discussionmentioning

confidence: 99%

Ontogeny of the stomach in yellow catfish (Pelteobagrus fulvidraco): detection and quantifictation of pepsinogen and H⁺/K⁺‐ATPase gene expression

Gao

Yang

et al. 2011

Animal Physiology Nutrition

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“…Lipid accumulation in the liver has been interpreted as a disturbance in the hepatocellular lipid transfer and metabolism (Segner & Witt 1990). In larvae of gilthead sea bream (Salhi et al 1999), European sea bass (Gisbert et al 2005), Atlantic cod (Wold et al 2008) and yellow catfish (Lu et al 2008), the use of dietary PL has been reported to induce a decrease in the degree of lipid accumulation in the hepatocytes. This can be explained by the beneficial effect of polar lipids on lipid transport from the liver to extra hepatic tissues, probably by enhancing lipoprotein synthesis (Sheridan 1988).…”

Section: Effect Of Dietary Pl On Digestive Tract Developmentmentioning

confidence: 99%

Influence of dietary phospholipids on early ontogenesis of fish

Cahu¹,

Gisbert²,

Villeneuve³

et al. 2009

Aquaculture Research

106

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The aim of this paper is to provide explanations of how dietary phospholipid (PL) globally improves fish larval development, including growth and survival, digestive functions and skeletal development, and to propose optimal PL levels and sources in fish larval diets. Dietary incorporation of 8–12% PL related to dry matter (d.m.) promotes growth and enhanced survival in various species. Marine source PL, incorporating highly unsaturated fatty acids, was most efficient than soybean lecithin. This beneficial effect was explained by an enhancement in digestive functions, assessed by digestive enzyme activities and histomorphology. Nevertheless, 1.5–2.5% highly unsaturated fatty acids related to diet d.m. supplied by PL improved growth, survival and skeletal development, while 5% induced different skeletal deformities. The high incidence of deformities was associated with the down‐regulation of genes involved in development, such as RXRα, RARα, RARβ and BMP‐4, observed in the early stages in larvae fed a high highly unsaturated fatty acids level.

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“…Inclusion of dietary phospholipid has been suggested to improve growth and facilitate lipid transport in larval fish and the green sea urchin, Strongylocentrotus droebachiensis (Lu et al 2008; Gonzalez-Duran et al 2008). Supplementation of diets with soybean lecithin, primarily composed of phosphatidylcholine, may provide other nutrients such as phosphorous and choline in addition to fatty acids.…”

Section: Introductionmentioning

confidence: 99%

Optimizing dietary levels of menhaden and soybean oils and soybean lecithin for pre-gonadal somatic growth in juveniles of the sea urchin Lytechinus variegatus

et al. 2015

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Dietary lipids serve as important sources of energy and essential fatty acids for aquatic animals. Sources of animal and plant oils are increasingly limited as well as expensive, and dietary requirements associated with the inclusion of these oils must be carefully evaluated to facilitate sustainable and affordable formulations. In this study, we investigated quantities of menhaden oil (MO) with and without soybean lecithin or soybean oil (SO) to determine appropriate levels for optimal somatic growth for pre-gonadal juvenile Lytechinus variegatus. We prepared semi-purified diets that varied in neutral lipid content (0, 2, 4, or 8% dry matter) and soy lecithin (0 or 2%) and exchanged lipids reciprocally with purified starch while holding constant all other nutrients. We maintained laboratory-reared juvenile L. variegatus (average initial wet weight 82 ± 0.7 mg, mean ± SE , n = 9 treatment−1) in recirculating seawater systems and fed each daily a sub-satiation ration for five weeks. We assessed wet weights and test diameters every two weeks and at the end of the experiment (5 wk). Level of MO with or without soybean lecithin did not significantly affect wet weight gain; however, increasing levels of SO in the diet reduced wet weight gain and dry matter production efficiency and increased feed conversion ratio. Dry gut weight was positively correlated with level of MO. Lipid level in the gut increased with increasing dietary lipid level, regardless of source. These data suggest the composition of the SO is inhibitory for either nutrient absorption or metabolic processes associated with growth at this life stage. Diets containing total lipid levels of approximately 5 to 6% that include sources of n-3 fatty acids may support optimal growth for pre-gonadal juvenile L. variegatus.

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Effect of soybean phospholipid supplementation in formulated microdiets and live food on foregut and liver histological changes of Pelteobagrus fulvidraco larvae

Cited by 30 publications

References 26 publications

Ontogeny of the stomach in yellow catfish (Pelteobagrus fulvidraco): detection and quantifictation of pepsinogen and H⁺/K⁺‐ATPase gene expression

Ontogeny of the stomach in yellow catfish (Pelteobagrus fulvidraco): detection and quantifictation of pepsinogen and H⁺/K⁺‐ATPase gene expression

Influence of dietary phospholipids on early ontogenesis of fish

Optimizing dietary levels of menhaden and soybean oils and soybean lecithin for pre-gonadal somatic growth in juveniles of the sea urchin Lytechinus variegatus

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Effect of soybean phospholipid supplementation in formulated microdiets and live food on foregut and liver histological changes of Pelteobagrus fulvidraco larvae

Cited by 30 publications

References 26 publications

Ontogeny of the stomach in yellow catfish (Pelteobagrus fulvidraco): detection and quantifictation of pepsinogen and H+/K+‐ATPase gene expression

Ontogeny of the stomach in yellow catfish (Pelteobagrus fulvidraco): detection and quantifictation of pepsinogen and H+/K+‐ATPase gene expression

Influence of dietary phospholipids on early ontogenesis of fish

Optimizing dietary levels of menhaden and soybean oils and soybean lecithin for pre-gonadal somatic growth in juveniles of the sea urchin Lytechinus variegatus

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Ontogeny of the stomach in yellow catfish (Pelteobagrus fulvidraco): detection and quantifictation of pepsinogen and H⁺/K⁺‐ATPase gene expression

Ontogeny of the stomach in yellow catfish (Pelteobagrus fulvidraco): detection and quantifictation of pepsinogen and H⁺/K⁺‐ATPase gene expression