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Samkelisiwe, N. Hlophe; Ngonidzashe, A.G. Moyo

doi:10.4194/1303-2712-v14_3_22

Cited by 9 publications

(5 citation statements)

References 35 publications

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“…Likewise, the hepatocyte morphology of sharpsnout sea bream, Diplodus puntazzo (Walbaum, 1792), appeared to not be altered by plant protein substitution (Nogales Mérida et al 2010). In contrast to our fi ndings, Hlophe and Moyo (2014) reported that liver histology indicated an increase in hepatocyte degradation with increasing levels of Kikuyu grass meal and moringa leaves meal. Similarly, Hu et al (2013) reported that high substitution of fi sh meal by animal protein blend (up to 60% and 80%) appeared to enlarge the hepatocytes and induce apparent hepatic steatosis.…”

Section: Discussioncontrasting

confidence: 89%

“…The availability of FM, however, cannot be guaranteed any longer because the capture fi sheries are levelling off (Hlophe and Moyo 2014). Hence, partial or total replacement of FM with cost-effective, widely available, plant or animal protein sources has been important for developing aquaculture sector (Yang et al 2006, Hernández et al 2014.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, researchers have recently stated their studies that the monitoring of this organ is important in FM replacement studies (Caballero et al 2004, Rašković et al 2011. Histological changes in liver and intestine of fi sh fed diets containing various levels of alternative protein sources have been previously demonstrated in different fi sh species by several authors (Merrifi eld et al 2009, Nogales Mérida et al 2010, Gai et al 2012, Martínez-Llorens et al 2012, Hu et al 2013, Hlophe and Moyo 2014. Thus, the objective of this study was to investigate fatty acid composition and liver histology of Nile tilapia fry when FM protein is replaced by PBM protein as an alternative protein source.…”

Section: Introductionmentioning

confidence: 99%

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Effect of dietary fish meal replacement by poultry by-product meal on muscle fatty acid composition and liver histology of fry of Nile tilapia, Oreochromis niloticus (Actinopterygii: Perciformes: Cichlidae)

Aydın¹

2015

Acta Ichthyol. Piscat.

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Aydın B., Gümüş E., Balcı B.A. 2015. Effect of dietary fi sh meal replacement by poultry by-product meal on muscle fatty acid composition and liver histology of fry of Nile tilapia, Oreochromis niloticus (Actinopterygii: Perciformes: Cichlidae). Acta Ichthyol. Piscat. 45 (4): 343-351.Background. Poultry by-product meal (PBM) has been used as a potential substitute for fi sh meal (FM) in aquaculture feeds. However, there are concerns that high replacement of FM protein with PBM protein could adversely affect of the fi sh fl esh quality, due to lowered (Σ n-3 PUFA) fatty acids content. While fatty acid composition of fi sh muscle has critical importance in human nutrition, the fi sh liver is a key organ that facilitates digestion of feed and plays an important role in fi sh digestive system. As has been recently demonstrated, the monitoring of this organ is important in FM replacement experiments. The aim of this study was to evaluate the potential use of PBM on the fatty acid composition of the muscles and on the histological structure of the liver of fry of Nile tilapia, Oreochromis niloticus (Linnaeus, 1758). Materials and methods. Five isonitrogenous (34%, crude protein), isolipidic (9%, crude lipid), and isoenergetic (15 MJ · kg -1 , digestible energy) diets were formulated to contain graded levels of PBM, where FM protein was replaced with PBM protein at 0%, 25%, 50%, 75%, and 100% level with lysine-, methionine-, and threonine supplementation. Triplicate groups of 20 fi sh (mean weight 0.879 g) were fed three times daily to apparent satiation for 12 weeks. Results. At the end of the experiment, the fatty acid contents of the fi sh muscle were signifi cantly affected by the experimental diets. As the FM content decreased, there was no reduction of saturated fatty acids; the diet with lowest FM protein percentage having the highest monounsaturated fatty acids and lowest polyunsaturated fatty acids (PUFA) proportions. The replacement of FM by PBM had a profound impact on the fatty acid composition of tilapia muscle with an increase in Σ n-6 PUFA and a decrease in the Σ n-3 and Σ n-3 : Σ n-6 PUFA ratio. The histological examination of liver tissue in all treatments of this study, revealed no histological abnormalities. Conclusion. The replacement of FM with PBM (range 0%-100%) signifi cantly decreases the amount of docosahexaenoic acid (12.2%-1.2%) and eicosapentaenoic acid (4.4%-0.4%) in the muscle of fi sh. Therefore, further study is needed with PBM as a substitute of FM to determine acceptable fatty acid composition for commercial production.

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Section: Discussioncontrasting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of dietary fish meal replacement by poultry by-product meal on muscle fatty acid composition and liver histology of fry of Nile tilapia, Oreochromis niloticus (Actinopterygii: Perciformes: Cichlidae)

Aydın¹

2015

Acta Ichthyol. Piscat.

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“…Samkelisiwe et al [45] investigated the antioxidant strength of M. oleifera leaves in different in vitro systems including its effects on the activity of SOD, CAT, LPO and GSH in goats supplemented with M. oleifera seed cake. The hepato-protective effect of aqueous M. oleifera leaf extract against radiation-induced oxidative stress in mice was assessed by Sinha et al [46] by performing the immunoblotting and biochemical tests on the samples of mice liver. They reported that pretreatment of mice with M. oleifera leaf extract protected them against radiation-induced liver damage by reducing the oxidative damage.…”

Section: Discussionmentioning

confidence: 99%

Retracted: Ameliorative effects of Moringa oleifera on copper nanoparticle induced toxicity in Cyprinus carpio assessed by histology and oxidative stress markers

et al. 2018

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Nanoparticles (NPs) enter the environment mainly through waste water effluents, accidental spillage, and industrial runoffs. This is worrying because NPs can enter the human body owing to their large aspect-to-size ratio and reactive surfaces that facilitate their penetration through biological barriers and thus can induce oxidative stress in host cells. Therefore, there is a growing concern about the toxicity of NPs which needs to be addressed. Thus, this study investigated the ameliorative effects of Moringa oliefera seed extract (MOSE) in Cyprinus (C) carpio exposed to Cu-NPs. For the in vivo assessment of shielding effects of MOSE, 240 samples of C. carpio (40-45g) were randomly allocated into 24 experimental tanks (10 fish/tank of 40L) 24 h prior to the start of this experiment. The experimental fish were challenged to the water-born exposure of a pre-determined dose of 1.5 mg Cu-NPs /l along with pre and post treatment with different doses (100 or 200 or 300 mg/l) of MOSE for 28 days. The MOSE showed significant ameliorative effect on the antioxidant defense, in response to the elevated levels of Cu-NPs-induced oxidative stress. It also played a protective role as indicated by the suppression of histological alterations in gills and liver of fish exposed to Cu-NPs. It is concluded that Cu-NPs induced toxicity in C. carpio was ameliorated by the use of MOSE in this study. Moreover, post-CuNPs treatment stage showed more protective effects of MOSE than the pre-CuNP treatment phase. Further studies are suggested to determine the optimum dose and delivery method of MOSE for similar or different NP exposed fish.

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“…The saponin has a negative effect on the biological membranes that act as a surface-active component, leading to the intestinal mucosal cells permeability increasing and affecting active nutrients transportation. Moreover, phytate reduces the minerals bioavailability and the protein digestibility through phytic acid-protein complexes, which restrain the nutrient absorption (Hlophe & Moyo, 2014).…”

Section: Effect Of Supplementing Diet With Moringa Leaves On Growth Performancementioning

confidence: 99%

POTENTIAL APPLICATIONS OF DIETARY Moringa oleifera LEAVES AS GROWTH MODULATOR AND IMMUNOSTIMULANT AGAINST Aeromonas hydrophila FOR FARMED Oreochromis niloticus

Mapanao

Jiwyam

Khrueanet

et al. 2021

Indonesian Aquaculture Journal

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Herbal medicine, including moringa (Moringa oleifera), is widely used as dietary supplementation to enhance growth performance and increase disease resistance in aquaculture. This study aimed to investigate the effects of supplementing moringa leaves on growth performance, hematology and disease resistance of nile tilapia (Oreochromis niloticus) against Aeromonas hydrophila. Fish (38.05 ± 0.83 g) were fed with a commercial feed supplemented by moringa leaves at 0%, 15%, 20%, and 25%, ad libitum, twice a day for eight weeks. Results revealed that 15% moringa leaves supplemented diet gave the highest weight gain, while the specific growth rate was statistically significantly different (p<0.05) among the treatments. Fish fed with 25% supplementation had the highest total red blood cell count and total white blood cell count. All experimental groups had higher values of red blood cells and white blood cells than the control group. The challenge test with A. hydrophila showed that the fish fed with the 25% moringa leaves supplementation diet had the highest relative percentage survival rate. There were no significant differences among the treatment groups. However, the treatment groups had a statistically significant difference with the control group (p<0.05). Results of the present study indicated that supplementation of 15% moringa leaves in diet gave optimal growth performance, while supplementation of 25% moringa leaves in the diet showed the best results in terms of the health of nile tilapia. Moringa leaves supplemented in nile tilapia diet enhanced growth performance and increased disease resistance against A. hydrophila.

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Cited by 9 publications

References 35 publications

Effect of dietary fish meal replacement by poultry by-product meal on muscle fatty acid composition and liver histology of fry of Nile tilapia, Oreochromis niloticus (Actinopterygii: Perciformes: Cichlidae)

Effect of dietary fish meal replacement by poultry by-product meal on muscle fatty acid composition and liver histology of fry of Nile tilapia, Oreochromis niloticus (Actinopterygii: Perciformes: Cichlidae)

Retracted: Ameliorative effects of Moringa oleifera on copper nanoparticle induced toxicity in Cyprinus carpio assessed by histology and oxidative stress markers

POTENTIAL APPLICATIONS OF DIETARY Moringa oleifera LEAVES AS GROWTH MODULATOR AND IMMUNOSTIMULANT AGAINST Aeromonas hydrophila FOR FARMED Oreochromis niloticus

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