Journal of Applied Biosciences最新文献

{"title":"Influence de l’huile de soja sur le poids et la taille des œufs des poules pondeuses « Warren »","authors":"Clarisse Kinonton Kone Yelakan, René Ahua Koffi, Louis Guichard Bohoua","doi":"10.35759/JABS.156.1","DOIUrl":"https://doi.org/10.35759/JABS.156.1","url":null,"abstract":"The quality of the laying feed is the most important element on which the physical and nutritional characteristics of eggs depend. The incorporation of vegetable oils in the diet of the layers gives this diet a supply of essential fatty acids such as linoleic acid. Soybean oil is a vegetable oil rich in polyunsaturated fatty acids and has a high concentration of linoleic acid, which is essential for proper egg laying function. Objective: This present work aims to evaluate the effects of soybean oil laying feed supplementation on the weight and size of eggs from Warren laying hens. Methodology and results: The experiment involved 150 Warren 20 weeks old (entry laying egg), divided into 3 lots of 50 hens each. Soybean oil was introduced into foods at a rate of 0% (Lot 1: Control), 2% (Lot 2) and 4% (Lot 3). The feed thus produced was daily distributed to the hens. The first data of the experiment were recorded after one month of laying (25th week). These data allowed to determine the weight and size of the collected eggs. After 7 months of experience, results showed that supplementation of 2% and 4% soybean oil improved respectively the weight to 2.49 g and 1.36 g. For the size of the eggs, the incorporation of 2% and 4% soybean oil gives similar values but higher than those of the control lot (0%). Conclusions and application of the results: Soybean oil is therefore seen as a mean for improving the yield of poultry production. An application of the use of this oil in poultry feed would be an asset for the poultry sector and will improve the income of producers.","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"1 1","pages":"16071-16077"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74239440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the bioaccumulation of mercury (Hg) and fluorine (F) in garden produce in south Benin","authors":"G OuikounC., B. E.C., P. Lawson-Evi, J. Dossou, K. Eklu-Gadégbéku","doi":"10.35759/JABS.156.8","DOIUrl":"https://doi.org/10.35759/JABS.156.8","url":null,"abstract":"Objectives: The richness of the soils in metallic trace elements (MTEs) and Fluorine, which are potentially toxic elements, makes it necessary to pay attention to the risks of transfer of these elements to the food chain. The aim of this study is to evaluate the content of mercury and fluorine in soils, irrigation water and market garden products in South Benin. Methodology and Results: A total of 21 composite soil samples (0-20cm), 21 samples of irrigation water per growing area and 87 plant samples were collected. After sampling under aseptic conditions, they were sent for analysis in laboratories. The Excel spreadsheet calculated the contents and the GraphPad Prism 8.0 calculated the averages and tests of two ways. Before determining the bioaccumulation, the contents were compared to the minimum concentration referenced by international standards. All matrices were contaminated with mercury and fluorine. The minimum reference concentration (0.55mg/Kg) was higher than the average levels of the study soils in Mercury (0.11±0.1. 10-2 to 0.164±0.345 .10-3 mg/Kg) and in Fluorine (8.123±1.772 to 23.5±1.126mg/Kg). Mercury and Fluorine levels in site irrigation water were below the standards. The levels of mercury (0.46 .10-3 ±0.13 .10-4 to 0.001±0.38. 10-4 mg/L) and fluorine (0.15±0.07 to 2.17±0.41mg/L) in the irrigation water of the sites are lower than the standards, except for the Houéyiho borehole. In leaves such as amaranth, there was a very significant difference (0.001 < p < 0.01) at Sèmekpodji and Grand-popo. Amaranth is a leaf that is in direct contact with the chemicals used in the environment and could absorb mercury. Fluorine levels exceed the maximum recommended concentration (0.05 mg/Kg) so the vegetables are polluted with fluorine. Conclusion and application of results: In Houéyiho, a medium bioaccumulation in amaranths and carrots was observed while in chili peppers bioaccumulation was low. On the other hand, in Sèmè-kpodji and Grandpopo, a low bioaccumulation of mercury in all the vegetables was observed. Fluorine bioaccumulation is medium in amaranth and carrot at Houéyiho and Sèmè-kpodji and low in chilli peppers at both sites. While bioaccumulation is low in vegetables produced at the Grand-popo site. Key words: bioaccumulation, soil contamination, vegetable contamination, mercury, fluorine, MRC, Benin","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83568249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Caractérisation des pâturages herbacés sahéliens à accès limité : Cas du Centre Secondaire de Multiplication de Bétail de Sayam (Diffa).","authors":"Idrissa Issoufa, M. Boube, A. Diouf, Saley Karim, A. Mahamane","doi":"10.35759/JABS.156.4","DOIUrl":"https://doi.org/10.35759/JABS.156.4","url":null,"abstract":"Objectives : This study aims to characterize the current state of the herbaceous pastures of the Sayam Secondary Cattle Multiplication Center. Methodology and Results : Four pastoral groups have been identified and described from 56 linear surveys carried out on a South North transect. A total of 98 herbaceous species distributed among 59 genera and 27 botanical families have been listed. The best represented genera are: Eragrostis, Ipomoea, Aristida, Cenchrus, Indigofera, Digitaria and Brachiaria. They represent about 50% of the total and contain most of the species of good pastoral value. The overall recovery, the gross and net pastoral values are respectively 85.5%, 75.05% and 67.56%, these attest that the pasture of the center is of good quality. The overall productivity of herbaceous phytomass was estimated at 2.26 tMS / ha with an overall carrying capacity of 0.40 TLU / ha / year, ie 2.5 ha / TLU / year. Analysis of the forage spectrum indicates that species of good pastoral value and those of low pastoral value dominate the grass cover. The first category dominates the better protected central zone while the last occupies the peripheral parts subject to heavy livestock exploitation. Conclusion and applicability of results : The colonization front of poorly palatable species is progressing towards the center under the effect of strong pastoral pressure. Hence the urgency to enclose the entire perimeter of the center in order to avoid creating an ecological imbalance detrimental to the survival of many species dependent on these particular miles. With a view to the rehabilitation and sustainable management of these pastoral centers, this study provides additional information on the current state of the herbaceous pastures in this center.","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"1944 1","pages":"16095-16113"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91192887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phenotypic characterization of the resistance of Salmonella – Shigella isolates to colistin and detection of mcr1/2 genes","authors":"Rolande Mabika Mabika, Franck Mounioko, Loïs Wenceslas Mboumba, A. Souza, Jean-Fabrice Yala","doi":"10.35759/JABS.156.6","DOIUrl":"https://doi.org/10.35759/JABS.156.6","url":null,"abstract":"Objective: Colistin is one of the latest line of therapeutics used in the management of infections due to multiresistant Gram-negative bacteria. The current emergence of colistin resistance, in particular through the mediation of plasmid resistance genes (mcr1 and mcr2) in intestinal bacteria is a worldwide concern. The objective of this study is to evaluate the sensitivity of Salmonella and Shigella strains to colistin and the detection of mcr1 and mcr2 genes within these strains. Methodology and Results: The colistin sensitivity profile of 30 Salmonella strains and 5 Shigella strains was determined using the Minimum Inhibitory Concentrations in liquid medium of Mueller Hinton and the results were interpreted in accordance with the standards of the European Committee on Antimicrobial Susceptibility Testing Epidemiological cut-off 2020 version 10.0. Finally, the mcr1 and mcr2 genes were detected by a conventional PCR. Overall, a phenotypic resistance rate of 20% was recorded for Salmonella-Shigella pathogens, with a frequency of 17.1% for Salmonella and 2.9% for Shigella. Molecular screening of these isolates revealed a lack of detection of the mcr1 and mcr2 genes in their genetic heritage. Conclusion and application of results: this study shows that Salmonella and Shigella strains are resistant to colistin, however the mcr 1 and 2 genes have not been amplified. To this end, the rational use of colistin must be applied in the human and animal field in order to curb the increase and spread of resistance to this molecule. Keywords: Colistin, Gabon, mcr, resistance, Salmonella-Shigella","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"17 13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89920361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Évaluation de la consommation et caractérisation nutritionnelle des feuilles de Tiliacora funifera","authors":"Mananga Vital, Itoua Okouango Yvon Simplice, Moukassa Wolfgon, Boukou Gabriëlla Jesnaure, Elenga Michel","doi":"10.35759/JABS.154.6","DOIUrl":"https://doi.org/10.35759/JABS.154.6","url":null,"abstract":"Objective: A study was carried out on a leaf vegetable Tiliacora funifera used as a seasoning (spices and condiment) by the population of Komono. The general objective of this work is to carry out an evaluation of the consumption and a the nutritional value of this wild condiment and spice : the leaves Tiliacora funifera. Methodology and Results: A cross-sectional survey of consumption of Tiliacora funifera leaves was carried out in Komono center on 170 households. The characterization was based on the determination of the of water content, dry matter, total fat, total protein, total carbohydrates and total ash. Surveys show that the Tiliacora funifera leaf is a seasoning known and consumed by all Respondents (100%). The part consumed is the leaf (100%), in order to enhance the taste of saka-saka (100%). Saka-saka is a dish prepared from cassava leaves. Respondents obtain the leaves more from the forest (95.3%) and through gathering (98.2%). The leaves of Tiliacora funifera are consumed only in saka-saka in cooked form (98.8%). Its consumption frequency is several times a week (32.9%) with cassava as a complementary food preferably (84.1%). The leaves of Tiliacora funifera are not seasonal, they are eaten in all seasons (92.3%). These leaves provide the sweet taste in saka-saka (96.4%). The laboratory results give the following morphological and nutritional characteristics: leaf length 10.14 ± 2.25cm, leaf width 6.16 ± 2.35cm, number of secondary veins 11 ± 3.60, number of main veins 1 ± 0, petiole length 2.14 ± 1.20cm. The water content represents 50.17 ± 6.70 of fresh matter; dry matter content 49.81 ± 6.70 fresh matter; protein content: 0.57 ± 0.74 dry matter; lipid content: 5.50 ± 1.50 of dry matter; carbohydrate content 88.53 ± 3.76 dry matter. Ash content: 5.36 ± 3.37 dry matter. The energy provided by this leaf is 406.0 Kcal. Conclusion and application of results: The leaves of Tiliacora funifera are widely used by the people of Lékoumou in the preparation of the saka-saka dish. They add value to this dish by bringing a good flavor (good taste). These leaves would have a good organoleptic quality and deserve to be classified in the list of seasonings (condiment and spices). These leaves are also energetic.","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"50 1 1","pages":"15888-15904"},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83900699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Qualité des eaux pluviales stockées dans les citernes pour la consommation dans la commune de Toffo : cas de l’arrondissement de Damè","authors":"Dovonou Edia Flavien, Hounsou .B. Mathieu, Sambienou W. Gédéon, A. Constant, Houessouga Farida, M. Daouda","doi":"10.35759/JABS.154.4","DOIUrl":"https://doi.org/10.35759/JABS.154.4","url":null,"abstract":"DOVONOU Edia Flavien1, HOUNSOU .B. Mathieu3, SAMBIENOU W. Gédéon1, ADANDEDJAN Constant2, HOUESSOUGA Farida1 , MAMA Daouda1 1Laboratoire d’Hydrologie Appliquée (LHA) à l’Institut National de l’Eau de l’Université d’Abomey-Calavi 01 BP 526 Cotonou (Bénin) 2Laboratoire de Contrôle de la Qualité des Eaux et Aliments (LCQEA) de la Direction Nationale de la Santé Publique (DNSP) Cotonou (Bénin) 3Laboratoire d’Hydraulique et de Maitrise de l’Eau (LHME) à l’Institut National de l’Eau de l’Université d’AbomeyCalavi 01 BP 526 Cotonou (Bénin) *Auteur correspondant e-mail : dovflav@yahoo.fr Tél(00229) 97386246 / 95 33 98 81","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"5 1","pages":"15871-15880"},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90830529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effets du vermicompost à base d’ordures ménagères associées aux balles de riz sur les paramètres agronomiques du maïs (Zea mays L.)","authors":"Arnauth Martinez Guéi, Ferdinand Gohi Bi Zro, S. Bakayoko, Fabrice Djè Bi Ta","doi":"10.35759/JABS.154.3","DOIUrl":"https://doi.org/10.35759/JABS.154.3","url":null,"abstract":"Objectives: This study aims to produce and determine the fertilizing value of vermicompost, and to measure the effects of this vermicompost on the growth and yield of corn. Methods and results: The work consisted first of all in developing a household waste compost then its associated vermicompost by inoculation of the earthworm Eudrilus eugeniae (Kinb.), and then in evaluating their effects on the production of maize through a trial conducted in the natural environment in Jean Lorougnon Guedé University of Daloa. The treatments consisted of a control consisting of fallow soil, household waste compost associated with rice husks and the corresponding vermicompost. The results revealed that vermicompost has the highest levels of N, P and K, but the lowest concentrations of Cu, Zn Guei et al., J. Appl. Biosci. 2020 Effets du vermicompost à base d’ordures ménagères associées aux balles de riz sur les paramètres agronomiques du maïs (Zea mays L.) 15863 and Pb. Corn plants grow better on vermicompost compared to compost and control. In addition, the vermicompost treatment produced root biomass (45.625 ± 1.812 kg.ha-1), the number of grains per plant (391.68 ± 17.20 kg.ha-1) and the total biomass of grain (2608.969 ± 50.914 kg.ha-1) the highest. Conclusion and application of findings: The work revealed the importance of the species Eudrilus eugeniae in the formation of a compost of good chemical quality. Farmers can use household vermicompost associated with rice hulls to improve the yield of maize crops.","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"68 1","pages":"15862-15870"},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91145917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diversité, structure des arbres et description du boisement dans les concessions de l’espace urbain de Parakou au centre du Bénin","authors":"Prucelle Elisée Zohoun, Mama Djaouga, Soufouyane Zakari, David M. Baloubi, I. Yabi","doi":"10.35759/JABS.154.1","DOIUrl":"https://doi.org/10.35759/JABS.154.1","url":null,"abstract":"Prucelle Elisée ZOHOUN1*, Mama DJAOUGA2, Soufouyane ZAKARI2, David M. BALOUBI3, Ibouraïma YABI1 1 Laboratoire ‘‘Pierre Pagney’’ Climat, Eau, Ecosystème et Développement, Institut de Géographie, de l’Aménagement du Territoire et de l’Environnement (IGATE), Université d’Abomey-Calavi, BP 526 Cotonou, Bénin. 2 Laboratoire de Cartographie, Institut de Géographie, de l’Aménagement du Territoire et de l’Environnement (IGATE), Université d’Abomey-Calavi. BP 526 Cotonou, Bénin. 3Laboratoire d’Etudes des Dynamiques Urbaines et Régionales, Institut de Géographie, de l’Aménagement du Territoire et de l’Environnement (IGATE), Université d’Abomey-Calavi BP 526 Cotonou, Bénin. *Auteur correspondant Email : zohounprucelle@yahoo.fr Tel : +22997528305/ +22994355374","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"1998 1","pages":"15842-15852"},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82515537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Caractérisation de l’ichtyo faune de l’AMP de JoalFadiouth (Sénégal)","authors":"Yakhya Ben Abdallah Badiane, B. Sambou","doi":"10.35759/JABS.154.11","DOIUrl":"https://doi.org/10.35759/JABS.154.11","url":null,"abstract":"Objectif : L’étude a été menée dans l’Aire Marine Protégée (AMP) de Joal-Fadiouth avec pour principal objectif de déterminer l’état et la configuration de l’ichtyofaune dans les zones protégées en milieu marin. Méthodologie et Résultats : La méthode de collecte de données biologiques de ce travail repose principalement sur la pêche expérimentale (SFA, 2011). Elle repose, pour la plupart, sur une pêche d’échantillonnage du fait des surfaces importantes à étudier. L’étude a pris en compte de quatre périodes importantes du cycle hydro-climatique. L’AMP de Joal-Fadiouth est marquée par la présence d’une ichtyofaune riche et variée. On y note 126 espèces de poisson réparties en 49 familles dont les plus représentatives sont les Carangidae, les Sparidae et les Haemulidae. Certains paramètres comme la structure en taille de la population de poissons laisse apparaître beaucoup de variations entre les saisons hydrologiques. Conclusion et applicabilité des résultats : L’état et la configuration de l’ichtyo faune de l’AMP sont le résultat de la combinaison de trois facteurs notamment la position géographique du site, la diversité de l’habitat et l’absence de pêche destructive. Par conséquent pour l’amélioration de la gestion de l’AMP, ces facteurs devraient être tenus en compte. Mots clés : Aire marine protégée, Pêche expérimentale, Poisson, Espèce, Biomasse, Taille Characterization of the ichtyofaune of the Joal-Fadiouth MPA (Senegal) ABSTRACT Objective: The study was conducted in the Joal-Fadiouth MPA to determine the state and configuration of the fish fauna in protected areas in the marine environment. Methodology et Results: The method of collecting biological data was mainly based on experimental fishing (SFA, 2011). The study took into account four important periods of the hydro-climatic cycle. Some of parameters such as the size structure of the fish population reveal a lot of variations between hydrological seasons. The Marine Protected Area of Joal-Fadiouth is marked by the presence of a rich and varied fish fauna. There are 126 species of fish distributed in 49 families, the most representative of which are Carangidae, Sparidae and Haemulidae. Certain parameters, such as the size structure of the fish population, reveal many variations between hydrological seasons. Badiane et Sambou, J. Appl. Biosci. 2020 Caractérisation de l’ichtyo faune de l’AMP de Joal-Fadiouth (Sénégal) 15951 Conclusion and applicability of findings: The state and the configuration of the ichthyofauna of the MPA are the result of the combination of three factors, in particular the geographical position of the site, the diversity of the habitat and the absence of destructive fishing, therefore for the improvement of its management, these factors should be taken into account. Key words: Marine Protected Area, Experimental Fishing, Fish, Species, Biomass, Size","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"13 1","pages":"15950-15959"},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79589845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Évaluation de bioaccumulation des métaux toxiques (pb, cu, mn) dans les espèces de crabes Callinectes amnicola et Cardisoma armatum consommés avec les légumes d’Abelmoschus esculentus dans la basse vallée de l’Ouémé (Benin, Afrique de l’ouest)","authors":"B. Manou, Mahamadou Ilalou Atikou, Marc Sohounnon, Hervé E. Labite, A., Y. Deguenon, A. Edorh, M. Aina","doi":"10.35759/JABS.154.8","DOIUrl":"https://doi.org/10.35759/JABS.154.8","url":null,"abstract":"Objective : to evaluate the bioaccumulation of toxic metals (Pb, Cu, Mn) for two different species of crabs (i.e., Callinectes amnicola and Cardisoma armatum) and of vegetable Abelmoschus esculentus (family Malvaceae) commonly called Okra and consumed in the lower valley of the Ouémé. Methodology and results:To do this, the contents of three metallic trace elements (MTE) manganese (Mn), copper (Cu) and lead (Pb) were sought in water, sand sediment, vegetables and crabs by using a flame atomic absorption spectrophotometer in 12 water and sediment samples and then in 72 crab samples. To search for lead, manganese and copper, an assessment of the health risks associated with the consumption of these contaminated products was carried out using a simplified standard approach. The results showed that all the Abelmoschus esculentus vegetables had Mn and Cu contents exceeding the WHO regulations. The results also revealed higher Mn concentrations in the sediment compared to the other two crab samples. Cardisoma armatum crabs accumulate more Cu and Pb than the Callinectes amnicola crab. The concentrations of lead (Pb) and Mn were below the standards set by the WHO. On the other hand, those of copper and manganese largely exceeded the regulations. The bioconcentration factor (BCF) varied from 0.25 to 0.29 for Mn, from 0.15 to 0.17 for Cu and from 0.67 to 0.82 for Pb. The presence of these metallic trace elements in crabs, can only result from the phenomenon of bioavailability in sediments. Conclusion and application of results: In conclusion, it can be remembered that the assessment of the bioaccumulation of toxic metals in food has shown that the consumption of crabs and vegetables constitutes a public health hazard for the population of the lower valley of the Ouémé. It would be essential to attract the attention of the populations so that they adopt a varied food ration. These results should be used as a decision-making tool for health authorities. The main recommendation resulting from the results is to carry out health surveillance in the lower valley of the Ouémé with regard to food.","PeriodicalId":14998,"journal":{"name":"Journal of Applied Biosciences","volume":"5 1","pages":"15913-15925"},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88825777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}