References of "Tropicultura"
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See detailCaractérisation de la race ovine algérienne Tazegzawth
Moula, Nassim ULiege

in Tropicultura (2018), 36(1), 43-53

This paper aims at, firstly, highlighting the morpho-biometric characteristics of the Tazegzawth sheep breed, and, secondly, describing the sheep farmers profile and their farming practices. The study was ... [more ▼]

This paper aims at, firstly, highlighting the morpho-biometric characteristics of the Tazegzawth sheep breed, and, secondly, describing the sheep farmers profile and their farming practices. The study was carried out in Kabylie (Algeria) which is the breed cradle of Tazegzawth sheeps. The essay concerned 16 breed farmers located in the Wilayas of Bejaia and Tizi-Ouzou. Each of the 85 sheeps (24 rams and 61 ewes) was characterized and profiled. The study indicated that the sheep farming is a diversification activity and not a specialized activity. Other breeds and species are kept by the farmers. Due to the sharing of grazing areas between farmers, anarchic matings occurred contributing to the Tazegzawth breed’s decline. Farmers involved in this study were male having on average 12.13±3.84 livestock heads per household. All the farmers used local resources as supplement feeding: organic waste, crop leftovers, hay and olive foliage, ash, elm, oak and fig foliage. Average live weight of males (68.48±1.12 kg) were highly significantly higher (p-value <0.01) than the average live weight of females (53.84±1.16 kg). Livestock systems involving Tazegzawth breed showed high diversity. The multiple correspondences analysis indicated 4 groups depending on the time length over which animal breeding took place, the bred animal species, the number of Tazegzawth bred animals, and the aims and objectives of the animal farming. [less ▲]

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See detailInventaire Préliminaire de la faune lombricienne dans la Réserve et Domaine de Chasse de Bombo-Lumene, Plateaux Batéké (République Démocratique du Congo)
Milau, fils; Lemtiri, Aboulkacem ULiege; Mungyeko, M et al

in Tropicultura (2018), 36(1), 3-10

La macro faune du sol est régulièrement mise en avant pour son rôle sur les caractéristiques physiques et chimiques du sol, notamment des terres cultivées. De plus, la fréquence du travail du sol et l ... [more ▼]

La macro faune du sol est régulièrement mise en avant pour son rôle sur les caractéristiques physiques et chimiques du sol, notamment des terres cultivées. De plus, la fréquence du travail du sol et l'intensité de l'exploitation culturale sont des facteurs importants à prendre en compte dans la gestion des sols agricoles. Le présent inventaire vise à étudier l'impact du changement d'usage des sols sur la faune lombricienne. Il présente la diversité et l'abondance des espèces de lombriciens dans des écosystèmes savanicoles et forestiers de la Réserve et Domaine de Chasse de Bombo-Lumene des plateaux Batéké en République Démocratique du Congo. A cet effet, six types d'environnements ont été explorés: les forêts denses semi-décidues, les galeries forestières, les recrûs forestiers, les savanes herbeuses, les savanes arborescentes, et les cultures. Les espèces lombriciennes récoltées sont présentées en fonction du biotope, du régime alimentaire, du type de prostomium et de la distribution géographique. [less ▲]

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See detailCharacteristic of Guinea Fowl breeding in West Africa: Review
Houndonougbo, Pascal ULiege; Bindelle, Jérôme ULiege; Chrysostome, A.A.M. Christophe et al

in Tropicultura (2017), 35(3), 222-230

Guinea fowl production in sub-Saharan Africa (SSA) is generally practiced under family and traditional rearing systems mainly for consumption and income generation, but this species plays also a major ... [more ▼]

Guinea fowl production in sub-Saharan Africa (SSA) is generally practiced under family and traditional rearing systems mainly for consumption and income generation, but this species plays also a major socio-cultural role in specific ceremonies. Birds are kept in free range or in confinement with outdoor access and fed on grain cereals, vegetables, edible termites and kitchen residues found in nature or occasionally supplied by the farmers. Several Guinea fowl varieties are observed and all are characterized by slow growth, high mortality of young and a relatively wild instinct. Although this avian species is less sensitive to some poultry diseases (Newcastle disease, Marek disease, Gumboro disease, etc), local guinea fowl are very sensitive to other poorly controlled diseases that require further study. These varieties differ greatly by their feather color, their morphological characteristics and growth performance, but further thorough and sustained research is needed to quantify these differences. Several researches established the nutritional requirements of local Guinea fowl but in terms of breeding, little works were done compared to chicken. Some recessive and dominant genes as well as genotypic differences were highlighted between varieties. [less ▲]

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See detailEffects of defatting combined or not to heating of Jatropha curcas kernel meal on feed intake and growth performance in broiler chickens and chicks in Senegal
Nesseim, Thierry ULiege; Dieng, Abdoulaye; Mergeai, Guy ULiege et al

in Tropicultura (2017), 35(3), 149-157

Jatropha curcas is a tropical drought-resistant plant belonging to the Euphorbiaceae family that has gained importance for the production of biodiesel. The kernel of the seed contains approximately 55 ... [more ▼]

Jatropha curcas is a tropical drought-resistant plant belonging to the Euphorbiaceae family that has gained importance for the production of biodiesel. The kernel of the seed contains approximately 55% lipid in dry matter and the meal obtained could be an exceptional source of protein for family poultry farming, after treatments to remove toxic and anti-nutritional compounds. The ingestion and the growth performance of J. curcas kernel meal (JKM), obtained after partial physico chemical de-oiling combined or not with heating was evaluated in broiler chickens and chicks. Sixty unsexed broiler chickens, 30 day-old, divided into three groups as well as twenty broiler chicks, 1 day-old, divided into two groups were obtained for two experiments. In experiment 1, jatropha kernel was de-oiled and incorporated into a control fattening feed at 40 and 80g/kg (diets 4JKM1 and 8JM1). In experiment 2, jatropha kernel meal obtained in experiment 1 was heat treated and incorporated into a growing diet at 80g/kg (diet 8JKM2). Daily dietary intakes as well as weight gain of the animals were affected by the incorporation of jatropha kernel meal in the ration. In experiment 1, average daily feed intake (ADFI1) of 139.2, 55.2 and 23.4g/day/animal and also average daily weight gain (ADWG1) of 61.9, 18.5 and -7.7g/animal were obtained respectively for the groups fed with diets 0JKM1, 4JKM1 and 8JKM1. In experiment 2, Average daily feed intake (ADFI2) of 18.7 and 3.1g/day/animal and also average daily weight gain (ADWG2) of 7.1 and 1.9g/animal were obtained respectively for the groups fed with diets 0JKM2 and 8JKM2. In both experiment, feed conversion ratio (FCR) was also affected by the dietary treatments and the overall mortality rate showed an increase according to levels of jatropha kernel meal in diet. Keywords: broiler chickens, broiler chicks, Jatropha curcas, ingestion, growth performance [less ▲]

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See detailAppropriate Technologies : a solution to the Energy Shortage in Sub-Saharan Africa
Mergeai, Guy ULiege

in Tropicultura (2017), 35(1), 1-2

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See detailParadoxal agriculture or the art of producing more while using less
Mergeai, Guy ULiege

in Tropicultura (2017), 35(2), 71-72

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See detailWhat solution to the challenge of agricultural mechanization in Sub-saharan africa ?
Mergeai, Guy ULiege

in Tropicultura (2016), 34(2), 111-112

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See detailContraintes Socio-économiques de Répartition des Terres et Impacts sur la Conservation des Sols dans les Hauts Plateaux de l’Ouest du Cameroun
Djoukeng, Henri Grisseur ULiege; Dogot, Thomas ULiege; Tankou, Christopher Mubeteneh et al

in Tropicultura (2016), 34(3), 231-241

This article combines the social survey data on access to land and those of the adoption of tied ridging as soil conservation technique to help better understand the management of erosion and runoff by ... [more ▼]

This article combines the social survey data on access to land and those of the adoption of tied ridging as soil conservation technique to help better understand the management of erosion and runoff by farmers in the Western Highlands of Cameroon, specifically in the hills of Fongo-Tongo villages’ group. The study focused on 230 plots owned by 157 respondents on 158 people inventoried. Five main modes of access to land were listed as: inheritance, purchase, temporary transfers, donations and rental. The owners and operators of the hills of gentle slopes (between11% and 17%) and steepest slopes (between 22% and 29%) were inventoried. Two main social ranks were identified: the dignitaries (Chiefs, Notables, Elites and heirs) and other (non-heirs son and women). The study showed that the agronomic abilities of plots as recognized by farmers are a key factor in the implementation of soil conservation techniques. The peasant approach of soil fertility has been scientifically proven by the physicochemical analysis of soil samples taken under plant species used locally as indicator of soil fertility (Pennisetum spp on fertile soils and Imperata cylindrica and Melinis minutiflora on poor soils). The study showed that access to land, adoption of tied ridging and slope exploitation were significantly influenced by the socio-economic status of farmers (p <0.05). [less ▲]

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See detailLe Parc National Sahamalaza - Iles Radama serait-il l’ultime refuge pour certaines espèces de lémuriens du nord-ouest de Madagascar ?
Wilmet, Leslie ULiege; Beudels-Jamar, Roseline C.; Schwitzer, Christoph et al

in Tropicultura (2015)

Depuis des millions d’années, la faune et la flore terrestre de Madagascar ont évolué dans un espace isolé. Suite à cette situation, le niveau d’endémisme y est très élevé et l’ensemble de l’île ... [more ▼]

Depuis des millions d’années, la faune et la flore terrestre de Madagascar ont évolué dans un espace isolé. Suite à cette situation, le niveau d’endémisme y est très élevé et l’ensemble de l’île représente un des plus importants hotspot de biodiversité. Madagascar fait aussi partie des pays les plus touchés en termes de destruction des habitats naturels ; 90 % de la végétation d’origine est aujourd’hui perdue. La déforestation et la fragmentation des habitats forestiers menace particulièrement les primates de l’île, les lémuriens. L’île est considérée par de nombreuses organisations internationales comme une priorité pour la conservation de la nature, autant dans le domaine zoologique que botanique. Les premières aires protégées de Madagascar ont été établies en 1927 et l’île en compte aujourd’hui 47. Cet article reprend l’historique et fait l’état des lieux du parc national Sahamalaza-Ile Radama, situé au nord-ouest de Madagascar. Nous nous intéressons spécifiquement à deux espèces de lémuriens emblématiques du parc ; Eulemur flavifrons et Lepilemur sahamalazensis ainsi qu’aux menaces qui pèsent sur leur écosystème. Différentes mesures ont été proposées dans le cadre d’un Plan d’Action de Conservation afin d’en améliorer la gestion et assurer la survie de ces espèces. [less ▲]

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See detailScaling up the Benefits of Smallholder Forestry beyond Timber: Success story of Teak (Tectona grandis L.f.) Leaves Marketing in Southern Benin
Aoudji, A.K.N.; Burny, Philippe ULiege; Adégbidi, A. et al

in Tropicultura (2015), 33(4), 322-332

The marketing of teak (Tectona grandis L.f.) leaves was studied in southern Benin, in order to seek out opportunities for increased financial returns in smallholder tree growing. A survey was carried out ... [more ▼]

The marketing of teak (Tectona grandis L.f.) leaves was studied in southern Benin, in order to seek out opportunities for increased financial returns in smallholder tree growing. A survey was carried out across the commercialization system. Seventy-six traders were interviewed in nine markets purposely selected, based on their functions in the commercialization system. Respondents provided information on their marketing functions, the costs borne, and their revenues. The marketing system was led by women who controlled the main functions. Three categories of traders were identified, namely collectors-wholesalers-retailers, collectors-retailers, and retailers. The commercialization of teak leaves increases the return from tree growing. Traders' monthly revenue was XOF 4,659-15,927 (USD 9.3-31.9) during the rainy season and XOF 6,621-21,655 (USD 13.2-43.3) during the dry season. As substitute for polyethylene bags in food packaging, teak leaves offer a potential to tackle environmental pollution in southern Benin. The study shows the necessity to consult beneficiaries to ensure the proper selection of tree species in farm forestry programmes. [less ▲]

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See detailEtude des possibilités de production de Jatropha curcas L. dans un couvert permanent de Stylosanthes guianensis (Aublet) Schwartz en association avec le maïs (Zea mays L.) et le soja (Glycine max (L.) Merr.) dans les conditions du Plateau des Batéké à Kinshasa
Minengu, J.D.; Mobambo, P.; Mergeai, Guy ULiege

in Tropicultura (2015), 33(4), 309-321

An experiment was carried out between July 2009 and December 2012 on the Batéké Plateau near Kinshasa to assess the impact of the intercropping of Jatropha curcas L. with short-cycle food crops (maize Zea ... [more ▼]

An experiment was carried out between July 2009 and December 2012 on the Batéké Plateau near Kinshasa to assess the impact of the intercropping of Jatropha curcas L. with short-cycle food crops (maize Zea mays L. and soybeans Glycine max (L.) Merr.) in a permanent cover of Stylosanthes guianensis (Aublet) Schwartz. The thirteen compared treatments consisted in the rotation corn – corn – soybean in pure stand and twelve combinations involving the cultivation of J. curcas: (1) Jatropha curcas in sole crop or in association with S. guianensis, (2) three J. curcas planting densities (3 333, 2 500, or 1 667 shrubs ha-1) and (3) Jatropha curcas sole cropped or associated with a short-cycle annual crop (rotation corn - corn, soybean). Vegetative development and seed yield of food crops and J. curcas were higher in plots with permanent S. guianensis cover. The highest mean yield of J. curcas in the 3rd year of production (harvests of July and December 2012) was 409.4±13.2 kg ha-1 dry seeds in plots with S. guianensis cover and 289,6±8,1 kg ha-1 in plots without mulch. The gravity of the damage of insect pests on J. curcas was higher in sole cropping (>60%) than in intercropping (<45%). The cultivation of J. curcas in a permanent cover of S. guianensis in intercropping with maize and soybean ensures both a good development of J. curcas plants and attractive yields of annual food crops in the early years following the installation of the plantation. During this phase, the optimum planting density is 2 500 shrubs ha-1. [less ▲]

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See detailDynamic and impact of major insect pests on Jatropha curcas L. in two cropping systems with contrasting characteristics in the province of Kinshasa (DRC)
Minengu, Jean de Dieu; Verheggen, François ULiege; Mergeai, Guy ULiege

in Tropicultura (2015), 3

The dynamic and impact of the major insect pests on Jatropha curcas L. were studied on two plantations located in the province of Kinshasa, the first in pure stand without irrigation (Mbankana site), the ... [more ▼]

The dynamic and impact of the major insect pests on Jatropha curcas L. were studied on two plantations located in the province of Kinshasa, the first in pure stand without irrigation (Mbankana site), the second under irrigation in combination with other crops (N'sele site). In Mbankana, after being planted during the long rainy season (October - December), the plants suffer significant attacks by crickets Brachytrupes membranaceus Drury (Orthoptera, Gryllidae), which cause a mortality rate of 10 - 40%. The first half of October and second half of December are the best planting periods when it comes to limiting these losses. At N'sele, cricket attacks during planting are controlled by the farmers who eat these insects. After being planted at both sites, the plants are attacked by leaf miner caterpillars Stomphastis thraustica Meyrick (Lepidoptera, Gracillariidae) and flea beetles Aphthona sp. (Coleoptera, Chrysomelidae), which consume the leaf blades and buds. The size of these two pest populations and resulting damage reach a peak during the wettest time of year. On adult plants at N'sele, insect pests observed include flea beetles, leaf miners, and shield-backed bugs Calidea sp. (Heteroptera, Scutelleridae). These bugs cause damage to flowers and capsules. In the absence of insecticide treatments, yield losses reached 90% in Mbankana and 60% in N'sele. The discussion focuses on what causes the different pest impact levels recorded between the cropping systems and methods used to limit the main types of damage caused by insects on J. curcas in the Kinshasa region. [less ▲]

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See detailSoil - the Key to our Future
Mergeai, Guy ULiege

in Tropicultura (2015), 33(2), 65-66

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See detailAgriculture and climate change : challenges and solutions
Mergeai, Guy ULiege

in Tropicultura (2015), 33(3), 161-162

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See detailAnalyse quantitative de la consommation en viande de brousse en vue d’une gestion durable de la faune sauvage au Gabon
Ngama, Steeve ULiege

in Tropicultura (2015), NS

In Gabon, like everywhere in the Central Africa region, hunting could lead to serious ecological damages in the near future. Yet, quantifying bush meat contribution to local people diet will help to ... [more ▼]

In Gabon, like everywhere in the Central Africa region, hunting could lead to serious ecological damages in the near future. Yet, quantifying bush meat contribution to local people diet will help to improve the efficiency when operating necessary hunting regulation. The purpose of this study was to provide more data on wildlife contribution to forest people’s diet and the influence of related factors. To do so, 36 households were surveyed during one year time in the Ipassa reserve buffer zone in Makokou, Gabon. This study reveals that 53.1% of meats consumed by surveyed people are from wildlife. Moreover, this consumption was influenced by (i) the fact that households’ chiefs are salaried, farmers or hunters, (ii) the distance from households’ residences to the reserve and (iii) meat prices on markets. In addition, poultry meat appears to be a potential alternative to bushmeat and even constituted 52.4% of consumptions in one of the survey areas where the greatest number of households’ chiefs were salaried. [less ▲]

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See detailAnalysis of the technical / economic performance of four cropping systems involving Jatropha curcas L. in the Kinshasa Region (Democratic Republic of the Congo)
Minengu, J.D.; Mobambo, P.; Mergeai, Guy ULiege

in Tropicultura (2015), 33(2),

In order to assess the sustainability of cultivating Jatropha curcas L. in rural areas in the Kinshasa region, four cropping systems were compared : cultivation of J. curcas as a sole crop with and ... [more ▼]

In order to assess the sustainability of cultivating Jatropha curcas L. in rural areas in the Kinshasa region, four cropping systems were compared : cultivation of J. curcas as a sole crop with and without fertilisers, a combination of J. curcas with subsistence crops (maize - Zea mays L., the common bean - Phaseolus vulgaris L.) with and without fertilisers. The major attacks by pests (mainly Aphthona sp.) suffered by J. curcas plants in the region make it vital to conduct at least two insecticide treatments per year. Dry seed yields of J. curcas obtained in the 4th year of cultivation amounted to 753 kg ha-1 when J. curcas was cultivated as a sole crop without fertilisers, 797 kg ha-1 for intercropping without fertilisers, 1158 kg ha-1 when J. curcas was cultivated as a sole crop with fertilisers and 1173 kg ha-1 for intercropping with fertilisers. Yields from the two annual crops were not improved by the application of mineral fertilisers on the J. curcas plants. They amounted to an average of 815 kg ha-1 for maize and 676 kg ha-1 for the beans. It is more profitable to cultivate J. curcas with maize and beans than to cultivate it as a sole crop. By combining crops in this way, a one-hectare farm can earn 1102 USD ha-1 without fertilisers and 1049 USD ha-1 with fertilisers. Sustainable cultivation of J. curcas under the test conditions requires the development of efficient weed / pest control methods and improved soil fertility management, in order to minimise the use of mineral fertilisers. [less ▲]

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See detailIncidence de la Déforestation sur les catégories écologiques des vers de terre dans le domaine et Réserve de Chasse de Bombo-Lumene ( Kinshasa)
Empwal, F. Milau; Sudi, C. Kachaka; Komanda, J. Aloni et al

in Tropicultura (2014), 33(3), 209-217

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See detailConsommation de produits d'origine animale dans la concession forestière 039/11 de la SODEFOR à Oshwe (R.D. Congo)
Semeki Ngabinzeke, Jean; Belani Masamba, Justin; Ntoto M'Vubu et al

in Tropicultura (2014), 32(3), 147-155

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