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Water quality in forest and village ponds in Burkina Faso(western Africa)

Journal of Forestry Research 2017年第5期28卷 1039-1048页

作者： Bilass Zongo Frdric Zongo aboubacar toguyeni Joseph I.Boussim Laboratoire de Biologie et Ecologie Vgtales Universit de Ouagadougou Unit de Recherche Aquaculture et Biodiversit Aquatique Laboratoire d'Etude et de Recherche sur les Ressources Naturelles et les Sciences Environnementales Universit Polytechnique de Bobo-Dioulasso

Forest ecosystems help conserve the quality of water resources in aquatic habitats. The conservation of biological diversity in aquatic and terrestrial ecosystems remains a communal concern. Aquatic ecosystems and resources are vulnerable but can be preserved and protected by forests. In sub-Saharan regions of Africa, water from ecosystems such as ponds still play important role in the livelihood of local populations. Water from temporary ponds is used by local populations for multiple needs; however, in this part of the world, the population is increasing, thus increasing human needs and activities and land use in the region. Land-use changes lead to deforestation, land degradation and the decline in freshwater, affecting human health and well-being. Forest degradation leads to the decline in ecosystem goods and services, particularly those related to watersheds. This study conducted in eastern Burkina Faso aimed to assess water quality of temporary ponds in protected forest areas (reserves) and surrounding villages. It was conducted in 61 temporary ponds where physical, chemical and biological variables were measured, such as water surface area, depth, transparency, macrophyte cover, pH, dissolved O2, conductivity, nutrient concentrations and algae biomass. The results showed that at p < 5%, water surface area (p = 0.02), depth (p = 0.00), nutrient content (p = 0.00), and algae biomass (p = 0.04) were significantly higher outside reserves than inside reserves. In contrast, macrophyte cover (mean cover percentages 53 vs. 44.5%) and water transparency (p = 0.02) were higher inside reserves. The variations in conductivity and pH were not significant. All trends showed the influences of human activities on water characteristics and the role forests and land cover had in preventing negative human impacts and disturbance of temporary ponds. Forests and land cover are important to water quality conservation and algae biomass regulation in temporary ponds. Prot

关键词： Ecosystem services Pond water Reserves Variables Western Africa

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Feeding Practices and Use of Lysine and Methionine in Pigrationing on Intensified Pig Breeding in the West Center and Hauts Bassins Regions of Burkina Faso

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Open Journal of Animal Sciences 2024年第1期14卷 23-38页

作者： Isidor Zangbéwindin Ouedraogo Timbilfou Kiendrebeogo aboubacar toguyeni Chantal Yvette Kabore-Zoungrana Laboratoire d’Etudes et de Recherches sur les Ressources Naturelles et les Sciences de l’Environnement (LERNSE) Universit&#233 Nazi Boni Bobo-Dioulasso Burkina Faso Laboratoire de Recherche et d’Etudes en Production et Santé Animales (LAREPSA) D&#233partement Productions Animales (DPA) l’Institut de l’Environnement et de Recherches Agricoles (INERA) Station de Farako-B&#226 Bobo-Dioulasso Burkina Faso Laboratoire Central d’Horticulture (LCH) Station de Recherche de Farako-B&#226 Institut de l’Environnement et de Recherches Agricoles (INERA) Bobo-Dioulasso Burkina Faso Ministère de l’Agriculture des Ressources Animales et Halieutiques (MARAH) Ouagadougou Burkina Faso

The aim of the study was to assess feeding practices and the use of lysine and methionine in pig rationing on intensified and semi-intensive pig breeding in the Koudougou and Bobo-Dioulasso areas. To this end, a cross-sectional survey was carried out on 87 breeding in these towns. A Discriminant Factorial Analysis (DFA) confirming a k-means classification of the data collected was used to retain 71 breeding divided into three breeding classes: Class A (32.4% of breeding), Class B (14.08%) and Class C (53.52%). The results show that the majority of pig breeders were men between the ages of 36 and 59. Average herd sizes were 35 ± 28;79 ± 42 and 89 ± 21 pigs for Classes A, B and C respectively. The main breeds of pig found on the breeding were crossbred, Large white, local, Landrace and Duroc. Class A (26.1%), B (30%) and C (15.8%) breeders were familiar with both lysine and methionine. Class A breeders distributed feed staggered (65.2%) and in rations (34.8%). Lysine (13%) and methionine (8.7%) were purchased at 5250 FCFA/kg. Those in class B distributed feed staggered (50%) and in the form of rations (50%), in which they incorporated lysine (30%) and methionine (30%) purchased at a cost of 2500 FCFA/kg and 3000 FCFA/kg respectively. Rationing and staggered feeding were practiced by 23.7% and 76.3% of Class C breeders respectively. Only lysine purchased at 3400 FCFA/kg was incorporated into rations by 10.5% of breeders. The high cost of lysine and methionine was incriminated by Class A (100%), B (33.3%) and C (50%) breeders. In conclusion, intensive pig breeding, the practice of rationing and the incorporation of the amino acids lysine and methionine are of ascending importance from classes C, A to B. The high cost of feedstuffs, particularly lysine and methionine, compromises their use in rations, which could have a negative impact on expected breeding performance. The screening and use of feeds rich in and/or enriched with these amino acids, through the development

关键词： Feeding Practices Lysine Methionine Intensive Pig Breeding Burkina Faso

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Characterization of Okra Convective Drying, Influence of Maturity

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Food and Nutrition Sciences 2014年第6期5卷 590-597页

作者： Ouoba Kondia Honoré Zougmoré François Sam Raguilignaba toguyeni aboubacar Desmorieux Hélène Laboratoire des Matériaux et Environnement(LAME) Unitéde Formation et de Recherche en Sciences Exactes et Appliquée(UFR/SEA)Universitéde OuagadougouOuagadougouBurkina Faso Laboratoire d’Automatisme et de Génie des Procédés(LAGEP) UCBL1-CNRS UMR 5007-CPE LyonBat.308G43 bd du 11 Nov.1918 VilleurbanneUniversité Claude Bernard Lyon 169622LyonFrance Institut de Développement Rural Université Polytechnique de BoboBobo-DioulassoBurkina Faso

An experimental study for the drying kinetics of whole okra was carried out. In the study, different ages were considered by taking into account influence of okra maturity on its convective drying. The 2D moisture evolution inside the product and its maturity were evaluated by fitting experimental data versus drying time. The water effective diffusion coefficient of okra at different maturity states was gotten by the experimental model using Fick’s second law. A parametric study was carried out in the ranging of okra age from 2 to 7 days at 60℃, both fruits gathered on the same plant to avoid divergences due to okra varieties that can induce difference on physical structure and the chemical composition. It was found from the experimental results that okra maturity has important influence on its behaviour during convective drying. At 2, 3, 4, 5 and 7 days old, the drying effective time was respectively 780, 1000, 1155, 850 and 750 min. Effective diffusivity of the okra in this order of age was 1.38 × 10-10, 6.09 × 10-11, 1.23 × 10-11, 8.98 × 10-11, and 1.05 × 10-10 m2/s in the present study, while the average initial moisture content was respectively 12.27, 9.00, 7.53, 5.97 and 4.92 Kgw/Kgdm.

关键词： Convective Drying Okra Effective Diffusivity Maturity Initial Moisture Content

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Protein Profiles of Pod Borer Maruca Resistant Transgenic Cowpea

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American Journal of Plant Sciences 2023年第12期14卷 1453-1463页

作者： Mounyratou Rabo Teyioue Benoit Joseph Batieno Assita Traoré-Barro Salimata Traoré Orokia Coulibaly aboubacar toguyeni Chantal Kaboré-Zoungrana Oumar Traoré Laboratoire National de Biosécurité Agence Nationale de Biosécurité (ANB) Ouagadougou Burkina Faso Institut de l’Environnement et Recherches Agricoles Département Productions Végétales Ouagadougou Burkina Faso Laboratoire d’Etudes et de Recherches sur les Ressources Naturelles et les Sciences de l’Environnement (LERNSE) Université Nazi BONI Bobo-Dioulasso Burkina Faso Laboratoire de Génétique et amélioration des plantes (LAGAMEP) Institut de l’Environnement et Recherches Agricoles Ouagadougou Burkina Faso Laboratoire de protection et défense des cultures (LAPRODEC) Institut de l’Environnement et Recherches Agricoles Ouagadougou Burkina Faso

The grain legume cowpea Vigna unguiculata (L.) Walp. is a major protein source used for food and feed in Sub-Saharan Africa. The crop is affected by the pod borer Maruca vitrata against which transgenic lines were developed as part of the genetic control approach. This study aimed to assess the protein profiles in seeds and leaves of transgenic cowpea lines and their non-transgenic near-isogenic counterparts. Crude protein content was determined by the Kjeldahl method, and soluble proteins were quantified using Bradford dye binding assay. The average crude protein content ranged between 21.61% and 26.58% in the seeds and between 10.86% and 17.90% in the leaves. Total solubility varied between 13.03% and 20.64%. Osborne’s protein fractions contents in the seeds were 52.41% - 69.52% (albumin), 4.62% - 7.19% (globulin), 7.95% - 11.40% (glutelin) and 3% - 4% (prolamin). In any case, protein content differed significantly between cowpea genotypes but not between pairs of transgenic/non-transgenic lines. Insecticidal Cry1Ab protein expressed by transgenic lines was only detected in the albumin and globulin fractions. Altogether, these findings enhance our understanding of the effects of genetic modification on cowpea protein content and composition, with potential implications for nutritional and safety assessments.

关键词： Cowpea Protein Cry1Ab Protein Fractions

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Reactions of Maruca Resistant Transgenic Cowpea to Cowpea Aphid-Borne Mosaic Virus

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Agricultural Sciences 2024年第7期15卷 742-753页

作者： Mounyratou Rabo Moustapha Ouédraogo Orokia Coulibaly Assita Traoré-Barro Salimata Traoré Teyioue Benoit Joseph Batieno Chantal Kaboré-Zoungrana aboubacar toguyeni Oumar Traoré Laboratoire National de Bioscurit Agence Nationale de Bioscurit (ANB) Ouagadougou Burkina Faso Institut de lEnvironnement et Recherches Agricoles Dpartement Productions Vgtales Ouagadougou Burkina Faso Laboratoire dEtudes et de Recherches sur les Ressources Naturelles et les Sciences de lEnvironnement (LERNSE) Universit Nazi BONI Bobo-Dioulasso Burkina Faso Laboratoire De Gntique et Amlioration Des Plantes (LAGAMEP) Institut de lEnvironnement et Recherches Agricoles Ouagadougou Burkina Faso Laboratoire De Protection et Dfense Des Cultures (LAPRODEC) Institut de lEnvironnement et Recherches Agricoles Ouagadougou Burkina Faso

Cowpea (Vigna unguiculata L. [Walp.]) in one of the main grain legumes contributing to food security and poverty alleviation in Sub-Saharan Africa. To control the highly damaging legume pod borer Maruca vitrata F., transgenic cowpea lines expressing the insecticidal Cry1Ab Bt protein were developed. In this study, we evaluated the impact of Cry1Ab transgene expression on the susceptibility of four cowpea lines (named IT97K-T, IT98K-T, Gourgou-T and Nafi-T) and their respective non-transgenic near isogenic lines (IT97K, IT98K, Gourgou and Nafi) to Cowpea aphid-borne mosaic virus (CABMV) in greenhouse conditions. In a preliminary quality control test by enzyme-linked immunosorbent assay, the presence of Cry1Ab protein in transgenic seed lots ranged from 59% to 72%, with no significant differences among the lines (χ2 = 3.26;p = 0.35). Upon virus inoculation, all cowpea lines exhibited mosaic symptoms with similar severity between 7- and 11-day post-inoculation. No significant differences were observed in symptom severity. Significant differences were found between cowpea lines for time of symptom onset, virus accumulation in plants and days to 50% flowering. However, while comparing pairs of transgenic lines and corresponding non-transgenic lines, virus accumulation showed not significant differences whatever the pair. Time of symptom onset and days to 50% flowering did not also differ significantly between pairs of cowpea lines except Nafi/Nafi-T in which transgenic Nafi-T showed earlier symptoms (7.4 ± 0.7 vs. 8.9 ± 0.8 days post-inoculation) and shorter flowering time (37.3 ± 0.6 vs. 42 ± 1.7 days after sowing). Overall, these findings improve our understanding of the effects of Cry1Ab gene mediated genetic modification on cowpea infection by Cowpea aphid-borne mosaic virus, with potential implications for environmental safety assessment.

关键词： Cowpea Cry1Ab Cowpea Aphid-Borne Mosaic Virus Environmental Safety

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Protein Profiles of Pod Borer Maruca Resistant Transgenic Cowpea

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American Journal of Plant Sciences（美国植物学期刊） 2023年第12期

作者： Mounyratou Rabo Teyioue Benoit Joseph Batieno Assita Traoré-Barro Salimata Traoré Orokia Coulibaly aboubacar toguyeni Chantal Kaboré-Zoungrana Oumar Traoré

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Reactions of Maruca Resistant Transgenic Cowpea to Cowpea Aphid -Borne Mosaic Virus

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Agricultural Sciences（农业科学） 2024年第7期 742页

作者： Mounyratou Rabo Moustapha Ouédraogo Orokia Coulibaly Assita Traoré-Barro Salimata Traoré Teyioue Benoit Joseph Batieno Chantal Kaboré-Zoungrana aboubacar toguyeni Oumar Traoré

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Parametric Study by Dynamic Simulation of the Influence of the Air Infiltration Rate and the Convective Thermal Transfer Coefficient on the Thermal Behavior of Residential Buildings Built with Cut Lateritic Blocks

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Journal of Energy and Power Engineering 2018年第4期12卷 177-185页

作者： David Yemboini Kader toguyeni Etienne Malbila Laboratory of Physics and Chemistry of the Environment（LPCE） University Ouaga1-Pr JKZ-UFR/SEA-03 BP 7021 OuagadougouBurkina Faso Laboratory of Thermal and Renewable Energy（LETRE） University Ouaga1-Pr JKZ-UFR/SEA-03 BP 7021 OuagadougouBurkina Faso

Sustainable building design in dry tropical areas recommends reducing exposure of buildings to solar radiation and/or designing efficient enclosures with satisfactory thermal *** propose in this paper a study of the influence of the infiltration rate in the building and the coefficient of thermal transfer by convection of the walls, on the thermal comfort using TRNSYS software. All the models carried out were validated by recognized scientific criteria, namely correlation （R） and determination （R2） coefficients on the one hand and NBME and CVRMSE coefficients defined by ASHARE, 2002 on the other hand. The results obtained indicate that the modulation of the air infiltration rate allows the simulations on TRNSYS to be compared to in-situ measurements, with an annual average relative difference of 2.86% on the temperature difference. Furthermore, depending on the parameterization of the heat transfer coefficients by convection of the internal and external walls of walls used in the STD, the average annual difference can be reduced by 1% to 4% between the predictions and the measurements.

关键词： Cut lateritic blocks dynamic thermal simulation air infiltration thermal transfer coefficient by convection thermalbehavior.

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Assisting Temporal Requirement Specification

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Computer Technology and Application 2012年第1期3卷 47-55页

作者： Ahmed Mekki Mohamed Ghazel Armand toguyeni Univ Lille Nord de France Lille F-59000 France IFSTTAR ESTAS Villeneuve d＇Ascq F-59650 France EC LILLE LAGIS Villeneuve d＇Ascq F-59650 France

The aim of the present work is to introduce a pattern-based method for assisting the user during the temporal Requirement Specification （RS） phase. Indeed, since the user usually has to handle abstract notation as well as mathematical-based languages within this phase, RS is becoming more and more tedious and error-prone especially when dealing with complex systems. The authors＇ method begins by defining a new typology while taking into account all the common temporal requirements one may meet when specifying a system. Then, a literal word-based formal grammar able to express all the types of the identified requirements has been developed. Actually, the goal is to assist the user during the requirement identification with some means that are simple, intuitive, albeit rigorous. Finally, a generic set of observation patterns relative to the new time constraint taxonomy is defined. In practice, to check a given temporal constraint, its relative observation pattern is instantiated to obtain an observer that will stand for a watchdog for the associated requirement on the system.

关键词： Temporal requirements system specification verification & validation observation patterns.

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Design of Watertight Barriers for Retention Ponds of Cyanide Using Sludge from Water Purification Station （Ziga）

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材料科学与工程（中英文B版） 2014年第6期4卷 186-193页

作者： David Y.K. toguyeni Fabien Yonli Laboratoire de Physique et Chimie de l 'Environnement (LPCE) UniversitO de Ouagadougou Burkina Faso

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