There is more than one way of feeding carnivorous fish: Surubim (Pseudoplatystoma reticulatum × P corruscans) are able to cope with carbohydrates rich diets, but there is a trade-off between growth and immunity

Sousa, Luana Camargo; Moromizato, Basia Schlichting; Almeida, Viviane do Nascimento Santana de; Miasaki, Celso Tadao; Takahashi, Leonardo Susumu; Biller, Jaqueline Dalbello

doi:10.1016/j.anifeedsci.2019.114382

Cited by 11 publications

(8 citation statements)

References 32 publications

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“…The values for the haematological variables after the feeding assay (0 hr) (Table 2) were consistent with the reported in the literature for healthy P. reticulatum (Silva et al., 2020; Jerônimo et al., 2015; Mouriño et al., 2016; Sanchez et al., 2014; Sousa et al., 2019). The lack of a significant effect of dietary β‐glucan supplementation on those variables indicates that it did not negatively impact fish haematology.…”

Section: Variables β‐Glucan Levels P‐value Regression Model R2 Adj Rsupporting

confidence: 88%

β‐glucan improved growth performance of the catfish Pseudoplatystoma reticulatum without affecting haematological biomarkers after bacterial challenge with Aeromonas hydrophila : A preliminary study

Campos

Martins

et al. 2020

Aquac. Res.

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Section: Variables β‐Glucan Levels P‐value Regression Model R2 Adj Rsupporting

confidence: 88%

β‐glucan improved growth performance of the catfish Pseudoplatystoma reticulatum without affecting haematological biomarkers after bacterial challenge with Aeromonas hydrophila : A preliminary study

Campos

Martins

et al. 2020

Aquac. Res.

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“…The results of the present study demonstrate that the HC diet caused lipid deposition, which triggered lipid peroxidation and oxidative stress and then induced liver function damage. Similar findings have been found in hybrid grouper ( Epinephelus fuscoguttatus ♀ × E. lanceolatus ♂ ), Surubim ( Pseudoplatystoma reticulatum × P corruscans ) and Oreochromis niloticus [ 1 , 5 , 67 ]. The accumulation of large amounts of lipid will damage the liver structure, physiological function and lipid metabolism disorder, which would lead to excessive free radicals and finally cause oxidative damage to the body [ 68 , 69 ].…”

Section: Discussionsupporting

confidence: 84%

Alleviation of the Adverse Effect of Dietary Carbohydrate by Supplementation of Myo-Inositol to the Diet of Nile Tilapia (Oreochromis niloticus)

Zhu

Pan

Wang

et al. 2020

Animals

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This study investigated the effect of dietary myo-inositol (MI) on alleviating the adverse effect of the high carbohydrate diet in Nile tilapia (Oreochromis niloticus). Six diets contained either low carbohydrate (LC 30%) or high carbohydrate (HC 45%) with three levels of MI supplementation (0, 400 and 1200 mg/kg diet) to each level of the carbohydrate diet. After an 8-week trial, the fish fed 400 mg/kg MI under HC levels had the highest weight gain and fatness, but the fish fed 1200 mg/kg MI had the lowest hepatosomatic index, visceral index and crude lipid in the HC group. The diet of 1200 mg/kg MI significantly decreased triglyceride content in the serum and liver compared with those fed the MI supplemented diets regardless of carbohydrate levels. Dietary MI decreased triglyceride accumulation in the liver irrespective of carbohydrate levels. The content of malondialdehyde decreased with increasing dietary MI at both carbohydrate levels. Fish fed 1200 mg/kg MI had the highest glutathione peroxidase, superoxide dismutase, aspartate aminotransferase and glutamic-pyruvic transaminase activities. The HC diet increased the mRNA expression of key genes involved in lipid synthesis (DGAT, SREBP, FAS) in the fish fed the diet without MI supplementation. Dietary MI significantly under expressed fatty acid synthetase in fish fed the HC diets. Moreover, the mRNA expression of genes related to lipid catabolism (CPT, ATGL, PPAR-α) was significantly up-regulated with the increase of dietary MI levels despite dietary carbohydrate levels. The gene expressions of gluconeogenesis, glycolysis and MI biosynthesis were significantly down-regulated, while the expression of the pentose phosphate pathway was up-regulated with the increase of MI levels. This study indicates that HC diets can interrupt normal lipid metabolism and tend to form a fatty liver in fish. Dietary MI supplement can alleviate lipid accumulation in the liver by diverging some glucose metabolism into the pentose phosphate pathway and enhance the antioxidant capacity in O. niloticus.

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“…Overall, the values for the hemato-immunological variables obtained after the feeding assay are within the range of values for those reported for healthy Pseudoplatystoma reticulatum (Sanchez et al 2014, Jerônimo et al 2015, Mouriño et al 2016, Sousa et al 2019, Campos et al 2020.…”

Section: Discussionsupporting

confidence: 81%

Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry

Almeida

Martins

Oliveira

et al. 2021

Lat. Am. J. Aquat. Res.

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This study evaluated the dietary supplementation of ginger Zingiber officinale essential oil for the Neotropical catfish Pseudoplatystoma reticulatum, its effects on fish hematology, immunology, the response of these variables to induction of stress (exposition to air for 3 min), and a bacterial challenge with Aeromonas hydrophila, and the effects on liver histomorphometry. Three levels of the ginger essential oil were evaluated (0.5, 1.0 and 1.5%) in addition to a control group (0%) in a feeding trial for 65 days in triplicate. Fish hematology and immunology were assessed at five different moments: after the feeding trial (0), after the stress induction (stress), and three points after the bacterial challenge (3, 6 and 24 h post-challenge). Fish fed the ginger essential oil supplemented diets did not exhibit significant differences between the hematocrit at the 0-sample point and the 24 h post-challenge point (P ≥ 0.05), while fish fed the control diet presented significantly lower values for the hematocrit when comparing those same two moments (P < 0.05). The thrombocytes count for fish fed the 0.5% essential oil supplemented diet was significantly higher than all other groups after the feeding trial (P < 0.05), and their total leukocytes count after the stress induction was also significantly higher than the other treatments (P < 0.05). Although the results mentioned above indicate that the ginger essential oil had positive health effects on the fish, no significant differences in survival after the challenge with A. hydrophila were observed (P ≥ 0.05). Lastly, histomorphometry suggests that the essential oil did not negatively impact fish hepatocytes.

show abstract

There is more than one way of feeding carnivorous fish: Surubim (Pseudoplatystoma reticulatum × P corruscans) are able to cope with carbohydrates rich diets, but there is a trade-off between growth and immunity

Cited by 11 publications

References 32 publications

β‐glucan improved growth performance of the catfish Pseudoplatystoma reticulatum without affecting haematological biomarkers after bacterial challenge with Aeromonas hydrophila : A preliminary study

β‐glucan improved growth performance of the catfish Pseudoplatystoma reticulatum without affecting haematological biomarkers after bacterial challenge with Aeromonas hydrophila : A preliminary study

Alleviation of the Adverse Effect of Dietary Carbohydrate by Supplementation of Myo-Inositol to the Diet of Nile Tilapia (Oreochromis niloticus)

Dietary supplementation of ginger (Zingiber officinale) essential oil exhibits positive immunomodulatory effects on the Neotropical catfish Pseudoplatystoma reticulatum without negative effects on fish liver histomorphometry

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