135 research outputs found

    Overweight and obesity among women living in peri-urban areas in West Africa

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    Aim: This study assessed selected correlates of overweight and obesity among women in a sub-urban population of Abidjan, CĂ´te d’Ivoire. Methods: A cross-sectional study was conducted during April-May, 2014 in Abobo-Anonkoi 3, a peri-urban city of Abidjan in CĂ´te d’Ivoire. Women of 18 years and older healthy in appearance were randomly recruited from households. Overweight and obesity were measured by BMI respectively greater or equal to 25 and 30 kg/m2. Abdominal obesity was defined by waist to hip ratio greater or equal to 0.80. The level of physical activity was evaluated by the IPAQ questionnaire and the blood pressure according to the criteria of the JNC7 report. A regression analysis of the associated factors with overweight and obesity (age, marital status, level of study, level of physical activity, blood pressure, and socioeconomic status) was carried out. Results: We visited 486 households in which 398 women were approached and 327 agreed to participate in the survey. The average age was 35.25 ± 12.4 years. The prevalence of overweight was 27.2% and that of obesity was 19.6%; 72.2%of women had abdominal obesity. The prevalence of abdominal obesity was 90.6% among obese people. Age (p=0.006), marital status (p=0.002) and blood pressure (p=0.004) were significantly associated with obesity. With regard to abdominal obesity, there was a significant association of educational level in addition to the above factors. Conclusion: Overweight and obesity are a reality in this population of CĂ´te d’Ivoire and about one in five people are affected by the scourge of obesity

    Caractéristiques Morphopédologiques et Géochimiques des Sols Brunifiés de Anikro et de Kahankro (Centre-Sud de la Côte d’Ivoire)

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    In an ecosystem where ferrallitization is the dominant pedogenetic process, brown soils of a particular character are observed. They are dominant clay texture, very often spotted, and heavily loaded in coarse elements consisting of ferromanganic nodules and concretions. This paper focuses on highlighting the morphopedological and geochemical characteristics, determining the originality of the brown soils observed at Anikro and Kahankro, in the region of Toumodi, in Côte d’Ivoire. In the field, the toposquencial approach has been adopted. Soil pits have been opened and described. The samples taken were then analyzed by the triacid method in view of the determination of the content of total elements horizon by horizon. The results obtained show that the brown soils observed at Anikro and Kahankro are generally regosols and cambisols. They are subject to phenomena of reworking and rejuvenation and were affected by a phenomenon of hydromorphy at the bottom of the slope. The oxidation-reduction spots that occur in soil profiles and which predispose them to concretion are more abundant in topographic top and bottom position. Chemical analysis shows that at Anikro, the silica content decreases as the depth increases. Also, iron (Fe2O3) and aluminum (Al2O3) have an antagonistic character on the midslope. While at the bottom of slope, the MgO, MnO, Al2O3 and Fe2O3 contents increase in the BfeC depth horizon, with respective values of 3.6%, 2% and 20% for each of the last two. In Kahankro soils, the antagonism exists between silica and iron. Magnesium and manganese accumulate only in the surface horizons. At the lower slopes, the highest levels of iron (30%), aluminum (20%), magnesium (1.2%) and manganese (0.4%) in the Bg horizons begin with horizon A3. These high grades are obtained due to pseudogleyic to gleyic characters of soils located at this topographic position. The various oxides measured sometimes show a dispersed character according to the locality in relation to the nature of the rock formations whose alteration has been given to the soil. The various characteristics of the soils described reveal their particular characteristics. These soils deserve to be referred to as browned soils

    Charge de Travail, Soutien Social et Bien-être Psychologique au Travail chez des Agents de Sante des Services de Pediatrie des Centres Hospitaliers Universitaires (CHU) d’Abidjan

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    La prĂ©sente Ă©tude examine la relation entre la charge de travail, le  soutien social et le bien-ĂŞtre psychologique au travail. L’échantillon est composĂ© de 180 agents de santĂ© âgĂ© de 21 Ă  52 ans dont 41 MĂ©decins, 113 Infirmiers/Sages-femmes et 26 Aides-Soignants. L’instrument d’enquĂŞte est un questionnaire incluant les Ă©chelles de la charge de travail (N’Tsame-Sima, 2013), du soutien social (karasek et al., 1998) et du bien-ĂŞtre psychologique au travail Dagenais-Desmarais(2010). Les donnĂ©es recueillies ont Ă©tĂ© traitĂ©es Ă  l’aide de l’analyse de variances (ANOVA). Les rĂ©sultats indiquent, d’une part, qu’il n’existe pas de diffĂ©rence significative entre la charge de travail et le bien-ĂŞtre psychologique des participants. D’autre part, le soutien social ainsi que son interaction avec la charge de travail ont un effet positivement significatif sur le bien-ĂŞtre psychologique au travail des agents de santĂ© des services de pĂ©diatrie des CHU d’Abidjan. Ces rĂ©sultats suggèrent aux dirigeants des structures sanitaires de promouvoir le travail en Ă©quipe des agents de santĂ© afin de favoriser leur bien-ĂŞtre psychologique au travail gage de la qualitĂ© de l’offre de soins.       The current study examines the relationship between the workload, the social support and the psychological well-being at work. The sample is made of 180 health workers from 21 to 52 years old which of 41 physicians, 113 nurses/midwives and 26 ward assistants. The stool of the investigation is a questionnaire including the workload scales (N’Tsame-Sima, 2013), the social support, (karasek et al., 1998), and the psychological well-being at work (Dagenais-Desmarais (2010). The collected data was processed using the Analysis of Variance. The results show in the one hand that there is not a significant difference between the workload and the psychological well-being of the participants.  In the other hand, social support as well as its interaction with the workload has a significant positive effect on the psychological well-being at work of the health workers of the pediatric Services of Abidjan’s University Hospital. Those results suggest to the leaders of the health structures to promote the team working of the health care workers in order to favor their psychological well-being, the guarantee of the quality of the care offered

    Chemical composition and nutritional value of two edible mushrooms from three regions of Côte d’Ivoire

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    Wild edible mushrooms are consumed in the center regions of CĂ´te d’Ivoire. In this study, the proximate composition, mineral element profile and amino acid profile of two selected wild edible mushrooms from three regions from center of CĂ´te d’Ivoire including Lentinus squarrosulus and Auricularia politrich investigated. The mushrooms were harvested fresh, dried in an oven at 45°C for 48 hours, ground and analyzed according to standard procedures. showed high level of proteins (24.07±0.30–26.20±0.72%), crude fibre (12.30±0.07–20.13±0.07%), carbohydrate (52.36±1.84–64.64±0.68%), ash (9.58±0.18–16.02 ±0.10%) and fat (0.92±0.02–5.40±0.24%) in all species in the three regions. Mineral analysis of all species indicated the mushrooms were specifically rich in potassium, phosphorus, calcium and magnesium. Potassium was found to be the most abundant mineral present in all specie ranging from 1240.02±0.20 to 3414.11±0.94 mg/100g. Cadmuim and lead contents of the two species were generally very low. There were 17 amino acids, and these mushrooms were rich in essential amino acids. The ratios of essential amino acids to total amino acids were 0.40 to 0.45. The high scores of essential amino acids present in these mushrooms implied that they have a high biological protein value. These mushrooms could be considered a potential health food and may be of use to the food industry as a source of ingredients with high nutritional value

    Caractérisation Palynologique et Palynofaciologique de la Marge Est (Marge d’Abidjan) du Bassin Sédimentaire de Côte d’Ivoire

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    Des dĂ©pĂ´ts offshores localisĂ©s Ă  l’Est de la marge d’Abidjan (CĂ´te d’Ivoire) ont fait l’objet d’analyse palynologique et palynofaciologique. Elle Ă  portĂ© sur des dĂ©blais de forage Ă  partir desquels trente-deux (32) paires de lames minces palynologiques ont Ă©tĂ© confectionnĂ©es. L’objectif Ă©tait de mettre en Ă©vidence les Ă©tages du Tertiaire et la limite K-Pg par les palynomorphes stratigraphiques et de dĂ©terminer les environnements de dĂ©pĂ´t Ă  travers le palynofaciès. Cinq Ă©tages ont ainsi Ă©tĂ© mis en Ă©vidence. Ce sont le Maastrichtien supĂ©rieur, le PalĂ©ocène inferieur, le PalĂ©ocène supĂ©rieur, l’Eocène infĂ©rieur et l’Eocène moyen sur la base des palynomorphes tels que Cerodinium granulostriatum, Andalusiella mauthei, Andalusiella rhomboĂŻdes,  Andalusiella polymorpha, Andalusiella gabonensis, Retitricolporites irregularis, Psilatricolporites sp., Laevigatosporites ovatus, Retistephanocolpites williamsii, Apectodinium homomorphum, Adnatosphaeridium multispinosum etc. Trois (3) types de palynofaciès dont le palynofaciès 1 Ă  phytoclastes dominants dans laquelle les spores et les grains de pollen dominent Ă©voquant un environnement littoral au Maastrichtien et au PalĂ©ocène, un palynofaciès 2 Ă  phytoclastes et matière organique amorphe dominant Ă  l’Eocène dĂ©posĂ© dans un milieu marin marginal et un palynofaciès 3 Ă  matière organique amorphe dominant au palĂ©ocène supĂ©rieur et Ă  l’Eocène indiquant un milieu de plateau continental interne Ă  externe.   Offshore deposits located to the East of Abidjan margin (CĂ´te d’Ivoire) have been the subject of palynological and palynofaciological analysis. It focused on drill cuttings from which thirty-two (32) pairs of palynological thin sections were made. The objective was to highlight the Tertiary stages and the K-Pg boundary by stratigraphic palynomorphs and to determine the deposition environments by palynofacies. Five stages were thus highlighted. These are the Upper Maastrichtian, the Lower Paleocene, the Upper Paleocene, the Lower Eocene and the Middle Eocene based on palynomorphs such as Cerodinium granulostriatum, Andalusiella mauthei, Andalusiella rhomboĂŻdes, Andalusiella polymorpha, Andalusiella gabonensis, Retitricolporites irregularis, Psilatricolporites sp., Laevigatosporites ovatus, Retistephanocolpites williamsii, Apectodinium homomorphum, Adnatosphaeridium multispinosum etc. Three (3) types of palynofacies including palynofacies 1 with dominant phytoclasts in which spores and pollen grains dominate, evoking a coastal environment in the Maastrichtian and Paleocene, a palynofacies 2 with phytoclasts and amorphous organic matter dominant in the Eocene deposited in a marginal marine environment and an amorphous organic dominant palynofacies 3 in the Upper Paleocene and Eocene indicating an inner to outer continental shelf environment

    Détermination d’un Profil Agroforestier Local à Base de Cacaoyers dans les Environs de Kokumbo au Centre de la Côte d’Ivoire

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    Le présent article porte sur l’émergence d’un profil agroforestier local à base de cacaoyers dans les environs de Kokumbo. Les paysans, dans cette partie de la Côte d’Ivoire optent depuis des années pour l’exploitation agroforestière à base de cacaoyers, une pratique agricole durable encouragée par l’Etat et les acteurs environnementaux. La méthodologie adoptée est basée sur une approche qualitative combinant la revue documentaire, les interviews semi-structurées et l’observation participante. Au total 32 agroforestiers habitant les villages de Niamkey-Konankro et de Langossou ont été interrogés à l’aide des guides d’entretien préétablis. Les résultats obtenus montrent que la pratique agroforestière à base de cacaoyers dans cette partie du pays repose sur des fondements socioculturels et politiques solides qui engraissent sa continuation comme option de cacaoculture privilégiés par les locaux. This paper focuses on the development of a local cocoa-based agroforestry profile in Kokumbo vicinity. The farmers in this part of the Côte d’Ivoire have been opting for a cocoa-based agroforestry system for years. This system is a sustainable agricultural practice encouraged by the government and environmental actors. This study is based on a qualitative approach that combines document analysis, semi-structured interviews and participant observation. A total amount of 32 agroforestry smallholders living in the villages of Niamkey-Konankro and Langossou were interviewed using pre-established interview guides. The results have showed that the cocoabased agroforestry practice in this part of the country lies on solid sociocultural and political foundations which encourage its adoption as a cocoagrowing option favored by the local populations

    Effet Comparé du Temps de Compostage Sur la Fertilité Chimique de deux Fumures Organiques Couramment Utilisées en Maraîchage à Daloa-Côte d’Ivoire

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    L’étude a Ă©tĂ© rĂ©alisĂ©e d’avril 2022 Ă  juin 2022 en pĂ©riode de grande saison pluvieuse sur la parcelle expĂ©rimentale de l’UniversitĂ© Jean Lorougnon GuĂ©dĂ© de Daloa (CĂ´te d’Ivoire). Elle visait Ă  Ă©valuer l’effet de temps de compostage sur la fertilitĂ© chimique des composts produits Ă  partir de la fiente de poules pondeuses et de la bouse de bĹ“ufs. La mĂ©thodologie a consistĂ© Ă  prĂ©lever la fiente de poules pondeuses et de bouse de bĹ“ufs  provenant respectivement d’une ferme avicole et d’un pâturage Ă  Daloa. Les fumures organiques collectĂ©es ont Ă©tĂ© compostĂ©es en andain. Ainsi, quatre (4) diffĂ©rents tas groupĂ©s de fiente de poules pondeuses et de bouse de bĹ“ufs correspondant  Ă  14 JAC ; 28 JAC, 42 JAC et 56 JAC (Jours Après Compostage) ont Ă©tĂ© constituĂ©s et comparĂ©s Ă  un tĂ©moin de fumure non compostĂ©e (0 JAC). A maturitĂ©, les composts ont Ă©tĂ© prĂ©levĂ©s et sĂ©chĂ©s Ă  l’air libre pour les analyses au laboratoire. Les rĂ©sultats de l’analyse des propriĂ©tĂ©s physico-chimiques des composts produits en fonction de la durĂ©e du compostage ont montrĂ© un pH alcalin (pH > 7) aussi bien pour la fiente des poules pondeuses que pour la bouse de bĹ“ufs. Les proportions de matière organique, de carbone et d’azote du compost de poules pondeuses ont baissĂ© alors qu’elles ont augmentĂ© pour la bouse de bĹ“ufs durant le temps de compostage. Les teneurs des cations Ă©changeables (K+, Ca2+, Mg2+ et  Na+ ) ainsi que celles du complexe adsorbant (CEC) ont Ă©galement augmentĂ© avec le temps de compostage aussi bien avec la fiente de poules pondeuses que la bouse de bĹ“ufs avec un taux de saturation des bases très Ă©levĂ© (> 60 %) bien que les ratios d’équilibres sont faibles. Une diminution des teneurs en oligo-Ă©lĂ©ments (Fer et Zinc) dans les composts de poules pondeuses et bouse de bĹ“ufs produits a Ă©tĂ© aussi notĂ©e avec le temps de compostage et aucune teneur de plomb n’a Ă©tĂ© observĂ©e. En conclusion, notons que le temps de compostage des fumures organiques a fortement influencĂ© la qualitĂ© du compost et sa fertilitĂ© chimique. Le temps de compostage a permis la libĂ©ration des nutriments minĂ©raux qui sont contenus dans les substrats compostĂ©s et d’obtenir des valeurs de pH proche de 8 dans les composts produits. Ce qui offre des conditions favorables Ă  l’amĂ©lioration des propriĂ©tĂ©s physico-chimiques et biologiques du sol et Ă  la mise Ă  la disposition des plantes des  nutriments pour leur Ă©panouissement. Le temps de compostage est assurĂ©ment un moyen de rĂ©duire les concentrations des oligo-Ă©lĂ©ments  et des Ă©lĂ©ments traces mĂ©talliques dans les composts produits.  The study was carried out from April 2022 to June 2022 during the main rainy season on the experimental plot at the UniversitĂ© Jean Lorougnon GuĂ©dĂ© in Daloa (CĂ´te d'Ivoire). The aim was to assess the effect of composting time on the chemical fertility of composts produced from laying hen droppings and ox dung. The methodology consisted in collecting laying hen droppings and ox dung from a poultry farm and a pasture in Daloa, respectively. The organic manures collected were composted in windrows. Four (4) different grouped piles of laying hen droppings and ox dung corresponding to 14 DAC; 28 DAC, 42 DAC and 56 DAC (Days After Composting) were formed and compared with a control of non-composted manure (0 DAC). At maturity, the composts were collected and air-dried for laboratory analysis. The results of the analysis of the physico-chemical properties of the composts produced as a function of composting time showed an alkaline pH (pH > 7) for both the laying hen droppings and the ox dung. The proportions of organic matter, carbon and nitrogen in laying hen compost decreased, while they increased for ox dung over the composting time. Exchangeable cation (K+, Ca2+, Mg2+ and Na+ ) and adsorbent complex (CEC) contents also increased with composting time for both layer hen droppings and ox dung, with very high base saturation rates (>60%), although equilibrium ratios were low. A decrease in trace element content (Iron and Zinc) in the laying hen and ox dung composts produced was also noted with composting time, and no lead content was observed. In conclusion, it should be noted that the composting time of organic manures had a strong influence on compost quality and chemical fertility. Composting time enabled the release of mineral nutrients contained in the composted substrates, and resulted in pH values close to 8 in the composts produced. This provides favourable conditions for improving the physico-chemical and biological properties of the soil, and for providing plants with the nutrients they need to flourish. Composting time is certainly a means of reducing trace element and trace metal concentrations in the composts produced

    Caractérisation Palynologique et Palynofaciologique de la Marge Est (Marge d’Abidjan) du Bassin Sédimentaire de Côte d’Ivoire

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    Des dĂ©pĂ´ts offshores localisĂ©s Ă  l’Est de la marge d’Abidjan (CĂ´te d’Ivoire) ont fait l’objet d’analyse palynologique et palynofaciologique. Elle a portĂ© sur des dĂ©blais de forage Ă  partir desquels trente-deux (32) paires de lames minces palynologiques ont Ă©tĂ© confectionnĂ©es. L’objectif Ă©tait de mettre en Ă©vidence les Ă©tages du Tertiaire et la limite K-Pg par les palynomorphes stratigraphiques et de dĂ©terminer les environnements de dĂ©pĂ´t Ă  travers le palynofaciès. Cinq Ă©tages ont ainsi Ă©tĂ© mis en Ă©vidence. Ce sont le Maastrichtien supĂ©rieur, le PalĂ©ocène inferieur, le PalĂ©ocène supĂ©rieur, l’Eocène infĂ©rieur et l’Eocène moyen sur la base des palynomorphes tels que Cerodinium granulostriatum, Andalusiella mauthei, Andalusiella rhomboĂŻdes,  Andalusiella polymorpha, Andalusiella gabonensis, Retitricolporites irregularis, Psilatricolporites sp., Laevigatosporites ovatus, Retistephanocolpites williamsii, Apectodinium homomorphum, Adnatosphaeridium multispinosum etc. Trois (3) types de palynofaciès dont le palynofaciès 1 Ă  phytoclastes dominants dans laquelle les spores et les grains de pollen dominent Ă©voquant un environnement littoral au Maastrichtien et au PalĂ©ocène, un palynofaciès 2 Ă  phytoclastes et matière organique amorphe dominant Ă  l’Eocène dĂ©posĂ© dans un milieu marin marginal et un palynofaciès 3 Ă  matière organique amorphe dominant au palĂ©ocène supĂ©rieur et Ă  l’Eocène indiquant un milieu de plateau continental interne Ă  externe.   Offshore deposits located to the East of the Abidjan margin (CĂ´te d’Ivoire) have been the subject of palynological and palynofaciological analysis. It focused on drill cuttings from which thirty-two (32) pairs of palynological thin sections were made. The objective was to highlight the Tertiary stages and the K-Pg boundary by stratigraphic palynomorphs and to determine the deposition environments by palynofacies. Five stages were thus highlighted. These are the Upper Maastrichtian, the Lower Paleocene, the Upper Paleocene, the Lower Eocene, and the Middle Eocene based on palynomorphs such as Cerodinium granulostriatum, Andalusiella mauthei, Andalusiella rhomboĂŻdes, Andalusiella polymorpha, Andalusiella gabonensis, Retitricolporites irregularis, Psilatricolporites sp.,Laevigatosporites ovatus, Retistephanocolpites williamsii, Apectodinium homomorphum, Adnatosphaeridium multispinosum etc. Three (3) types of palynofacies including palynofacies 1 with dominant phytoclasts in which spores and pollen grains dominate, evoking a coastal environment in the Maastrichtian and Paleocene, a palynofacies 2 with phytoclasts and amorphous organic matter dominant in the Eocene deposited in a marginal marine environment and an amorphous organic dominant palynofacies 3 in the Upper Paleocene and Eocene indicating an inner to outer continental shelf environment

    Effet Comparé du Temps de Compostage Sur la Fertilité Chimique de deux Fumures Organiques Couramment Utilisées en Maraîchage à Daloa-Côte d’Ivoire

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    L’étude a Ă©tĂ© rĂ©alisĂ©e d’avril 2022 Ă  juin 2022 en pĂ©riode de grande saison pluvieuse sur la parcelle expĂ©rimentale de l’UniversitĂ© Jean Lorougnon GuĂ©dĂ© de Daloa (CĂ´te d’Ivoire). Elle visait Ă  Ă©valuer l’effet de temps de compostage sur la fertilitĂ© chimique des composts produits Ă  partir de la fiente de poules pondeuses et de la bouse de bĹ“ufs. La mĂ©thodologie a consistĂ© Ă  prĂ©lever la fiente de poules pondeuses et de bouse de bĹ“ufs  provenant respectivement d’une ferme avicole et d’un pâturage Ă  Daloa. Les fumures organiques collectĂ©es ont Ă©tĂ© compostĂ©es en andain. Ainsi, quatre (4) diffĂ©rents tas groupĂ©s de fiente de poules pondeuses et de bouse de bĹ“ufs correspondant  Ă  14 JAC ; 28 JAC, 42 JAC et 56 JAC (Jours Après Compostage) ont Ă©tĂ© constituĂ©s et comparĂ©s Ă  un tĂ©moin de fumure non compostĂ©e (0 JAC). A maturitĂ©, les composts ont Ă©tĂ© prĂ©levĂ©s et sĂ©chĂ©s Ă  l’air libre pour les analyses au laboratoire. Les rĂ©sultats de l’analyse des propriĂ©tĂ©s physico-chimiques des composts produits en fonction de la durĂ©e du compostage ont montrĂ© un pH alcalin (pH > 7) aussi bien pour la fiente des poules pondeuses que pour la bouse de bĹ“ufs. Les proportions de matière organique, de carbone et d’azote du compost de poules pondeuses ont baissĂ© alors qu’elles ont augmentĂ© pour la bouse de bĹ“ufs durant le temps de compostage. Les teneurs des cations Ă©changeables (K+, Ca2+, Mg2+ et  Na+ ) ainsi que celles du complexe adsorbant (CEC) ont Ă©galement augmentĂ© avec le temps de compostage aussi bien avec la fiente de poules pondeuses que la bouse de bĹ“ufs avec un taux de saturation des bases très Ă©levĂ© (> 60 %) bien que les ratios d’équilibres sont faibles. Une diminution des teneurs en oligo-Ă©lĂ©ments (Fer et Zinc) dans les composts de poules pondeuses et bouse de bĹ“ufs produits a Ă©tĂ© aussi notĂ©e avec le temps de compostage et aucune teneur de plomb n’a Ă©tĂ© observĂ©e. En conclusion, notons que le temps de compostage des fumures organiques a fortement influencĂ© la qualitĂ© du compost et sa fertilitĂ© chimique. Le temps de compostage a permis la libĂ©ration des nutriments minĂ©raux qui sont contenus dans les substrats compostĂ©s et d’obtenir des valeurs de pH proche de 8 dans les composts produits. Ce qui offre des conditions favorables Ă  l’amĂ©lioration des propriĂ©tĂ©s physico-chimiques et biologiques du sol et Ă  la mise Ă  la disposition des plantes des  nutriments pour leur Ă©panouissement. Le temps de compostage est assurĂ©ment un moyen de rĂ©duire les concentrations des oligo-Ă©lĂ©ments  et des Ă©lĂ©ments traces mĂ©talliques dans les composts produits.  The study was carried out from April 2022 to June 2022 during the main rainy season on the experimental plot at the UniversitĂ© Jean Lorougnon GuĂ©dĂ© in Daloa (CĂ´te d'Ivoire). The aim was to assess the effect of composting time on the chemical fertility of composts produced from laying hen droppings and ox dung. The methodology consisted in collecting laying hen droppings and ox dung from a poultry farm and a pasture in Daloa, respectively. The organic manures collected were composted in windrows. Four (4) different grouped piles of laying hen droppings and ox dung corresponding to 14 DAC; 28 DAC, 42 DAC and 56 DAC (Days After Composting) were formed and compared with a control of non-composted manure (0 DAC). At maturity, the composts were collected and air-dried for laboratory analysis. The results of the analysis of the physico-chemical properties of the composts produced as a function of composting time showed an alkaline pH (pH > 7) for both the laying hen droppings and the ox dung. The proportions of organic matter, carbon and nitrogen in laying hen compost decreased, while they increased for ox dung over the composting time. Exchangeable cation (K+, Ca2+, Mg2+ and Na+ ) and adsorbent complex (CEC) contents also increased with composting time for both layer hen droppings and ox dung, with very high base saturation rates (>60%), although equilibrium ratios were low. A decrease in trace element content (Iron and Zinc) in the laying hen and ox dung composts produced was also noted with composting time, and no lead content was observed. In conclusion, it should be noted that the composting time of organic manures had a strong influence on compost quality and chemical fertility. Composting time enabled the release of mineral nutrients contained in the composted substrates, and resulted in pH values close to 8 in the composts produced. This provides favourable conditions for improving the physico-chemical and biological properties of the soil, and for providing plants with the nutrients they need to flourish. Composting time is certainly a means of reducing trace element and trace metal concentrations in the composts produced
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