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Growth Characteristics of Fuirena umbellatain a Surface Flow Constructed Wetland and Its Influence in Nutrients and Faecal Bacteria Removal from Domestic Wastewater in Cameroon

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Journal of Environmental Protection 2017年第2期8卷 171-193页

作者： Martin Lekeufack Théophile Fonkou etienne pamo tedonkeng Laboratory of Applied Botany Department of Plant Biology University of Dschang Dschang Cameroon Laboratory of Animal Feeding and Nutrition Department of Animal Production University of Dschang Dschang Cameroon

Various configurations of vegetated bed systems with a variety of macrophytes have been tested experimentally in Cameroon, for the treatment of domestic wastewater. The aim of this work was to assess the growth and biomass production of Fuirena umbellata (Cyperaceae) and its potentials in the removal of faecal bacteria and nutrients from primarily treated domestic effluent. A wetland vegetated with this macrophyte and a non-vegetated wetland (control) were continuously fed with primarily treated domestic wastewater at an estimated loading rate of 205 Litres/day in dry and rainy seasons for two consecutive years. Physicochemical and microbiological parameters of the effluent were monitored at the inflow and outflows of the wetlands alongside with the growth and productivity attributes of the young plants during each season. The density of plants ranged in the wetland from 17 - 185 plants/m2 and from 11 - 146 plants/m2 respectively during the first and the second years. More biomasses were instead produced in the dry seasons than in the rainy seasons but with no significant differences observed. As for nutrients removal, higher efficiencies were observed in the vegetated wetland (45% - 73%) compared to the non-vegetated control (17% - 66%). Similar trends were observed for the faecal bacteria but with no significant differences between the seasons. However, the vegetated beds were significantly more efficient than the non-vegetated control in the reduction of many physicochemical parameters and faecal bacteria. This varied with the seasons.

关键词： Growth Characteristics Fuirena umbellata Nutrients Faecal Bacteria Removal Surface Flow Wetland Local Macrophyte

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Direct and Residual Effects of Different Levels of Chicken Manure Fertilization on the Growth and Biomass Production of Brachiaria ruziziensis(Poaceae)at the Bolting in West Cameroon

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Agricultural Sciences 2019年第8期10卷 1113-1123页

作者： Gilles Jiope Azangue Fernand Tendonkeng Francois Victor Nguetsop David Fokom Wauffo etienne tedonkeng pamo Department of Plant Biology Faculty of ScienceUniversity of DschangDschangCameroon Department of Animal Productions Faculty of Agronomy and Agricultural SciencesUniversity of DschangDschangCameroon

The direct and residual effects of different levels of chicken manure fertilization on the growth and biomass production of B. ruziziensis at the bolting were studied in West Cameroon. The objective of this study was to evaluate the effects of different levels of chicken manure fertilization on the growth and biomass production of Brachiaria ruziziensis at the bolting. A factorial device comparing five doses of nitrogen into chicken manure (0, 25, 50, 75 and 100 kg N/ha) on plot of 6 m2 (3 × 2 m) in four replicates, (i.e. a total of 20 experimental plots) was used. Chicken manure was spread one month after planting pieces of stump during the first year. In the second year, no fertilization was brought up. 40 plants were harvested by treatment for heights and diameters measurements. The evaluation of stems biomass, leaves and whole plants was done on each plot based on the level of fertilization. The results obtained showed that chicken manure fertilization had a positive effect on the growth and biomass production of the B. ruziziensis on the direct and residual effect of fertilization. Thus, the height, diameters and biomass of whole plants in the fertilized plots were significantly larger than in the control plots. The mineralization of the organic matter contained in the chicken manure with doses of 100 kg N/ha was done on the direct and residual effect in order to assure a maximal plant growth. The level of T4 fertilization (corresponding to the dose of 100 kg N/ha) gave the best results. Referring to the result obtained, the level of T4 fertilization corresponding to 100 kg N/ha would be suitable for an optimal B. ruziziensis growth in order to avoid providing the soil with mineral fertilizer.

关键词： Brachiaria ruziziensis Chicken Manure Height Diameter Biomass

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In VitroDigestibility and Gas Production from E. crus-pavonisUsed in Wetlands from Domestic Wastewater Treatment

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Open Journal of Animal Sciences 2021年第4期11卷 608-622页

作者： Gabriel Nicodème Tsetagho Martin Lekeufack Mama Mouchili etienne pamo tedonkeng Théophile Fonkou Department of Plant Biology Faculty of Science University of Dschang Dschang Cameroon Department of Animal Productions Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon

In order to evaluate the possibilities of valorization as the feed of the plant biomass produced during wastewater treatment in constructed wetlands, a study of the in vitro digestibility and gas production of Echinochloa crus-pavonis was carried out in the Laboratory of Animal Production and Nutrition of the University of Dschang. The in vitro digestibility of Echinochloa crus-pavonis was evaluated at different harvesting periods. The digestibility parameters of E. crus-pavonis samples were determined by the in vitro method at different phenological stages. The gas production (GP) during 24 h of incubation was assessed using the in vitro

关键词： Echinochloa crus-pavonis Constructed Wetlands Ruminant Feed Nutritional Value in Vitro Digestibility

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Effect of Added Quantity of the Callistemon viminalisEssential Oil on the in VivoDigestibility of Pennisetum clandestinumHay and Some Biochemical Parameters on the West African Dwarf Goat

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Journal of Agricultural Chemistry and Environment 2018年第2期7卷 81-93页

作者： Hippolyte Watsop Mekuiko Fernand Tendonkeng Ferdinand Ngoula Emile Miegoue Jules Lemoufouet Bienvenu Fogang Zogang Zack Kambale Muhindo Albert Chounna Mama Mouchili etienne pamo tedonkeng Department of Animal Productions Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon

The study of the effect of added quantity of the essential oil of Callistemon viminalis on the in vivo digestibility of Pennisetum clandestinum and some biochemical parameters on the West African Dwarf goat was conducted with nine old West African Dwarf goats. After the adaptation period, each animal received 900 and 100 g/day of Pennisetum clandestinum hay and concentrate respectively, associated with 0, 100 or 200 mg essential oil/kg of DM. The samples of 100 g of each ration, faeces and 10 ml of urine were collected and analyzed for chemical composition and the evaluation of ingestion and digestibility. Also blood samples were obtained from jugular vein of all goats after in vivo digestibility test for the dosage of biochemical parameters. The results of this study show that the ingestion of dry matter, organic matter and the fibers were significantly (p 0.05) higher on the goat with the ration FPc + HECv200. The digestibilities of these same components were equally higher with the ration FPc + HECv200 (71.00% and 69.00% respectively for the dry matter (DM) and organic matter (OM)). Retained (5.64 g/j) and digested (51.33) nitrogen were significantly (p 0.05) higher with the ration FPc + HECv200. The values of blood metabolites studied increased significantly (p 0.05) with added quantity of essential oil in the rations, except for albumin, globulin, glucose and the low-density lipoprotein (LDL). In general, the incorporation of essential oils of Callistemon viminalis in the ration improved ingestion, digestibility and biochemical parameters on the West African Dwarf goat.

关键词： Hay Digestibility Callistemon viminalis Essential Oil Biochemical Parameters

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Direct and Residual Effects of Different Levels of Chicken Manure Fertilization on the Growth and Biomass Production of Brachiaria ruziziensis (Poaceae) at the Bolting in West Cameroon

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Agricultural Sciences 2019年第8期

作者： Gilles Jiope Azangue Fernand Tendonkeng François Victor Nguetsop David Fokom Wauffo etienne tedonkeng pamo

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Biochemical and Oxidative Stress Parameters of Broilers Fed Meal and Protein Isolate of Mucuna pruriensSeeds

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Open Journal of Animal Sciences 2021年第2期11卷 354-368页

作者： Mweugang Ngouopo Nathalie Miegoue Emile Youssoufa Tchoubou Yacouba Manga Pelyang Maurice Madjou Solange Njintang Yanou Nicolas Nukenine Elias Nchiwan Fonteh Anyangwe Florence pamo tedonkeng etienne Department of Biological Sciences Faculty of Sciences University of Ngaoundere Ngaoundere Cameroon Department of Zootechnic Animal Nutrition and Production Research Unit Faculty of Agronomy and Agricultural Sciences Universi-ty of Dschang Dschang Cameroon

Mucuna pruriens (velvet bean) represents an interesting source of protein poorly studied. The effect of dietary inclusion of meal and protein isolate of Mucuna seeds on biochemical and oxidative stress parameter of broilers (135-one-day Cobb500 chickens) was investigated. Three isonitrogenous diets were formulated from soya bean meal (Control group: RTS), Mucuna meal (coded RFM) and Mucuna protein isolate (coded RIM). Each of the dietary treatments was triplicated with 15 birds per replicate in a completely randomized design. The birds were offered feed and water ad libitum. The results revealed significant (p 0.05) effect of N source on the organ total proteins with treatment RFM and RIM exhibiting lower but comparable levels in the Liver (2.01 and 1.98 g/dL), Heart (1.95 and 1.89 g/dL) and Kidney (1.92 and 1.91 g/dL). Triglycerides contents were significantly (p

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In vitro activities of acetonic extracts from leaves of three forage legumes(Calliandra calotyrsus,Gliricidia sepium and Leucaena diversifolia) on Haemonchus contortus

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Asian Pacific Journal of Tropical Medicine 2011年第2期4卷 125-128页

作者： Wabo Pone J Kenne Tameli Florence Mpoame Mbida pamo tedonkeng E Bilong Bilong CF Department of Animal Biology Faculty of ScienceUniversity of DschangP O Box 067 DschangCameroon Department of Animal Science Faculty of Agronomy and Agricultural SciencesUniversity of DschangP O Box 222 DschangCameroon Department of Animal Biology and Physiology Laboratory of General BiologyFaculty of ScienceUniversity of Yaounde 1PO Box 812 YaoundeCameroon

Objective:To assess ovicidal activity of three acetonic extracts from the leaves of three forage legume,Calliandra calotyrsus(***),Gliricidia sepium(***) and Leucaena diversifolia(***) in vitro on Haemonchus contortus(***).Methods:Eggs were exposed for 24 hours to five different concentrations(0.075,0.15,0.3,0.6 and 1.25 mg/mL) of acetonic extracts at room temperature(24℃).Distilled water and 0.4%Tween were used in the bioassay as negative ***:The later did not affect embryonation and egg hatching of ***,significant effects were obtained with the acetonic extracts of leaves of all three plants and the maximum activity was observed with the highest concentration (1.25 mg/mL).The acetonic extract of *** was found to be more active(2.9%and 0.0% for embryonation and egg hatching,respectively) than the other substances 16.5%and 33.5%, respectively for ***,33.7%and 33.3%,respectively for L ***: These results suggest that the three forage legumes do possess ovicidal properties and further studies on larvae should be carried out.

关键词： Extract Calliandra calotyrsus Gliricidia sepium Leucaena diversifolia Mebendazole Haemonchus contortus Cameroon

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Mineral Composition and Effect of Biochar on Preweaning Reproductive and Growth Performance in Cavy (Cavia porcellus)

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Open Journal of Animal Sciences 2022年第1期12卷 145-157页

作者： Christèle Kenne Nouboussi Fernand Tendonkeng Nathalie Mweugang Ngouopo Emile Miégoué Dieu-Nedort Djoufack Thierry Douglas Ndongo Hamadou Ousmane J. Gwladys Nkana Kontchiachou Cédric Brailly Kwayep Nyah Mama Mouchili pamo T. etienne Department of Animal Science Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon Faculty of Science University of Ngaoundere Ngaoundere Cameroon Institute of Agricultural Research for Development Cameroon

In order to contribute to the improvement of the knowledge on the valorization of biochar as a feed additive in livestock, three biochar made from cassava peelings, bean tops and cocoa pods were manufactured. After analyzing their mineral composition, they were incorporated into rations at a rate of 0.8% in order to evaluate their effects on the performance of reproduction and pre-weaning growth in cavy (Cavia porcellus). The trials were conducted in the Research Unit of Animal Production and Nutrition (URPRONAN) of the University of Dschang, on 96 adult local breed cavy (from the first generation), including 80 females and 16 males aged 4 months and with an average weight of 400 ± 0.25 g. After 2 weeks of adaptation in the rearing boxes at the farm, the females were put in reproduction for a period of 31 days, the animals were divided into 04 batches of 20 females and 4 males. The animals in the control lot were fed a compound feed without biochar (T) while the others were fed the compound feed containing 0.8% of cassava peel biochar (EM), 0.8% of bean tops biochar (FH) and 0.8% of cocoa pod husks biochar (CC) respectively. The results of this study showed that the ash content (26%) and macro-element concentration were higher in the bean husk charcoal compared to the other charcoals and the trace elements were more concentrated in the cassava peel charcoal. The best fertility rate (87.5%) was obtained in animals receiving the ration containing organic cocoa pod charcoal. The

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