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Fruit Powder of Tetrapleura tetraptera in Local Feed on Some Zootechnical Performances of Juveniles of Clarias gariepinus in Concrete Tank

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Open Journal of Animal Sciences 2024年第2期14卷 56-69页

作者： ngouana tadjong Ruben Abdoulaye Abdoulaye Kana Jean Raphaël Téguia Alexis Laboratory of Aquaculture and Demography of Fisheries Resources Aquaculture Department Institute of Fisheries and Aquatic Science of Yabassi University of Douala Douala Cameroon Laboratory of Animal Nutrition Department of Animal Science Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon

This study focused on the supplementation of four-sided spice fruit powder (Tetrapleura tetraptera) on some zootechnical performances of juveniles of Clarias gariepinus and was carried out from February 14 to July 20 at the Massoma Fish Farm of Bojongo Mbeidi located in the Littoral Region, Department of Wouri, Douala IV district. The farm benefits from a climate favorable to aquaculture activity. For this purpose, five (5) treatments were tested including T0+ (imported feed), T0-, T0.3, T0.4, and T0.5 respectively for the treatments with 0% supplemented food;0.3%;0.4% and 0.5% of Tetrapleura tetraptera powder. A total of 450 Clarias gariepinus fry with an initial average weight of 7 ± 1.5 g, were distributed in happas of 0.49 m2 each placed in Triplicate in a completely randomized device. Four isoprotein foods with 38% crude protein were formulated to feed these fry at 7% of their biomass per day for 15 days then to their fullness until the end of the experiment. Intermediate fishing was carried out every fortnight. 75 days later, the results recorded show that the highest average survival rate (96.44% ± 3.5%) was recorded with the subjects fed feed supplemented with 0.4% T. tetraptera powder. The average weight (120.93 ± 67.20), weight gain (113.93 ± 67.20), specific growth rate (3.64 ± 0.79% g/d) and total lengths and standard (26.43 ± 1.9 and 23.66 ± 1.76) the highest were recorded with the T0+ treatment (imported feed). The highest conditioning factor K (2.14 ± 0.15) was recorded with the treatment supplemented with 0.4% T. tetraptera. The lowest conversion ratio (1.28) was recorded with the treatment fed with imported blue crown food (T0+). Furthermore, the lowest production cost was recorded with the treatment supplemented with 0.4% T. tetraptera. It appears from this study that the juveniles of C. gariepinus better value the feed substituted with 0.4% of the powder of fou

关键词： Tetrapleura tetraptera Local Feed Zootechnical Performance Juvenile of Clarias gariepinus

Growth Performance of Butcher’s Pigs Fed on Diets Made from the Ruminal Contents of Bovine Animals

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Open Journal of Animal Sciences 2022年第3期12卷 428-440页

作者： ngouana tadjong Ruben Mube Kuietche Hervé Tsafack Antoine Kana Jean Raphaël Laboratory of Aquaculture and Demography of Fisheries Resources Department of Aquaculture Institute of Fisheries and Aquatic Science of Yabassi University of Douala Douala Cameroon Laboratory of Animal Nutrition Department of Animal Science Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon

Both quantitatively and qualitatively, underfeeding materialized by underconsumption of meat remains one of the things most felt in Africa. To make up for this deficit, emphasis is placed on the production of short-cycle animals such as poultry, rabbits and pork. Among these animals, pig plays a very important socio-economic role in the life of local populations. Its meat is required in various ceremonies such as the dowry and funerals. For this purpose, twenty four males cross piglets with Large White × Landrace × Duroc × Pietrain phenotypic traits, aged between 58 and 62 days and having an average weight of 9.978 ± 1.11 kg were used to evaluate the influence of graded levels of bovine rumen content on the growth performances of grower finisher pigs. The piglets were submitted to 4 treatments, housed in pairs and fed ad libitum with a diet containing 0, 5%, 10% and 20% bovine rumen content. The trial which lasted for 18 weeks was carried out at the Teaching and Research Farm of the University of Dschang. The results showed that drying process destroyed most microbes found in the rumen content. These results also showed that the incorporation of bovine rumen content in diets had no significant (p > 0.05) effect on feed conversion ratio efficiency. However, feed intake, body weight and body weight gain were significantly higher in pigs fed with a diet (R5) containing 5% of bovine rumen content. Feed cost per kg of live body weight was significantly (p 20 diet compared to the animals receiving the control diet which was lower than that of the other two diets (R0) and (R5) but comparable with animals fed diet R10. The analysis of the carcass showed that increasing incorporation level of bovine rumen content in the diet reduces abdominal fat and back fat thickness. For offal, the lowest weight was recorded in animals fed the control diet (R0) and the highest weight with animals fed a diet containing 5% bo

关键词： Carcass Characteristics Dried Bovine Rumen Contents Growth Performances Pigs

Effects of Replacing Maize with Dioscarea bulbifera Flour on Growth Performance of Broiler Chickens

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Open Journal of Animal Sciences 2023年第2期13卷 217-231页

作者： Kemmo Kenhagho Arielle Priscila Tchouan Deffo Gilchrist ngouana tadjong Ruben Edie Nounamo Langston Wilfried Kana Jean Raphael Department of Animal Science Faculty of Agronomy and Agricultural Sciences Laboratory of Animal Nutrition University of Dschang Dschang Cameroun Institute of Fisheries and Aquatic Science of Yabassi Aquaculture Department Laboratory of Aquaculture and Demography of Fisheries Resources University of Douala Douala Cameroon

The present study was designed to evaluate Dioscarea bulbifera flour as potential feed ingredient in broilers diets. For this purpose, 256-day-old Cobb 500 broiler chicks, were divided into 4 groups replicated 4 times in a completely randomized design. A control ration (R0) containing maize as the main energy source was compared to three other rations in which 50%, 75% and 100% maize were substituted with Dioscarea bulbifera flour. The main results showed that, the increasing rate of Dioscarea bulbifera flour had no significant (p > 0.05) effect on the digestibility of feed components. Feed intake was higher with 50% and 75% Dioscarea bulbifera flour inclusion levels. As compared to the control ration, a significant (p < 0.05) drop in live weight and weight gain was recorded with 50% substitution while feed conversion ratio increased significantly with increasing level of Dioscarea bulbifera flour in the ration. Dioscarea bulbifera flour induced a linear and significant (p < 0.05) increase in the relative weight of the gizzard, liver and production cost. It was concluded that, substituting 50% maize with Dioscarea bulbifera flour could be a sustainable solution to palliate the growing inflation of maize as animal feed ingredient. However, the incorporation level of Dioscarea bulbifera as feed ingredient in substitution of maize must not exceed 50% at the risk of depreciating growth performance of broilers.

关键词： Diocorea bulbifera Growth Performance Cost of Production Broilers Maize Substitute

Growth Performance of Muscovy Ducks (<i>Cairina moschata</i>) Fed Palm Kernel Meal Based Diets

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Open Journal of Animal Sciences 2020年第3期10卷 346-361页

作者： Ruben ngouana tadjong Kana Jean Raphaël Yemdji Mane Divine Doriane Kamkade Yves Edie Nounamo Longston Wilfried Teguia Alexis Institute of Fisheries and Aquatic Science of Yabassi Aquaculture Department Laboratory of Aquaculture and Demography of Fisher-ies Resources University of Douala Douala Cameroon Faculty of Agronomy and Agricultural Sciences Department of Animal Science Laboratory of Animal Nutrition University of Dschang Dschang Cameroon

From a total of 80 fertile eggs incubated naturally by female ducks, healthy sexed ducklings (n = 64, 32 males and 32 females ducklings) were randomly selected and allotted to four dietary treatments with four replicates, in a completely randomized design in order to evaluate the effect of varying levels of palm kernel meal (PKM) on performance of ducklings. The dietary treatments comprised R0-control ration, R50-50% PKM replacement, R75-75% PKM re-placement and R100-100% PKM replacement of soyabean meal. The main results revealed that the apparent digestive coefficients of dry matter (81.12%), organic matter (83.98%) and NDF (81.10%) were higher with the ration in which 50% (R50-50% PKM replacement of soyabean meal) of soybean was replaced by palm kernel meal. The highest feed intake in male was recorded with the ration containing 75% (R75-75% PKM replacement of soyabean meal) of palm kernel. This same ration (R75-75% PKM replacement of soyabean meal) equally induced the highest live weight and weight gain in females. The experimental design and arrangement is a 2 × 4 factorial arrangement with two sexes and four levels of PKM. In males, the control ration without palm kernel meal induced the highest live weight and highest cumulative weight gain. The lowest feed conversion ratio (p 0.05) affected by the incorporation of palm kernel meal into the diet. Urea serum content tends to decrease with the increasing level of palm kernel meal in feed. In conclusion, soybean meal can advantageously be repla

关键词： Digestibility Performance Muscovy Duck Palm Kernel Meal Soybean Meal

Effects of Graded Levels of Joy Perfume Tree (<i>Pentadiplandra brazzeana</i>) Powder in Drinking Water on Growth Performance, Gut Microbiota and Haemato-Biochemical Parameters of Broiler Chickens

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Open Journal of Animal Sciences 2020年第3期10卷 514-527页

作者： Tsafack Boris Necdem Kana Jean Raphaël Yemdjie Mane Divine Ebile Dayan Agwah ngouana tadjong Ruben Donfack Mikael Tchouan Deffo Gilchrist Kengni Noubissie Josiane Teguia Alexis Animal Production and Nutrition Research Unit Department of Animal sciences Faculty of Agronomy and Agricultural Sciences University of Dschang Dschang Cameroon Laboratory of Aquatic Ressources Department of Aquaculture Institute of Fisheries and Aquatic Sciences University of Douala Douala Cameroon

The restriction of antibiotic growth promoters in livestock nutrition has led to a growing interest in plant feed additives. This study was designed to assess the production performance of broiler chickens fed on graded levels of Pentadiplandra brazzeana powder in drinking water. A total of 448 day-old Cobb 500 broiler chicks were randomly assigned to seven treatment groups with 4 replicates of 16 birds each (08 males and 08 females). Pentadiplandra brazzeana root was grounded and incorporated at 1, 2, 3, 4 and 5 g/L of drinking water. Control rations consisted of diet without any supplement (T0) and antibiotic (1 g/kg) medicated diet (T0+). Throughout the experimental period (49 days) feed intake was not significantly (p > 0.05) affected by graded levels of Pentadiplandra brazzeana except for 5 g/L of water that significantly (p Pentadiplandra brazzeana/L recorded a higher (p 0.05) affected irrespective of the level of incorporation of the test spice in drinking water. Serum content in urea was significantly lower (p Pentadiplandra brazzeana/L compared to all other treatments. ASAT, ALAT, creatinine, total cholesterol, triglycerides, HDL and LDL-cholesterol were not significantly affected by the inclusion of Pentadiplandra brazzeana powder in drinking water. Feeding chickens with up to 4 g of Pentadiplandra brazzeana significantly increased (p < 0.05) lactic acid bacteria count. E. coli and salmonella counts significantly (p < 0.05) decreased with the spice in water as compared to the control diet. In conclusion, the administration of u

关键词： Broilers Growth Performance Gut Microbiota Haemato-Biochemical Parameters Pentadiplandra brazzeana

Effects of Methenamine Feeding Regime on Growth Performances, Gut Microbiota, Organs Histology and Haemato-Biochemical Profile of Broiler Chickens

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Open Journal of Animal Sciences 2021年第2期11卷 238-254页

作者： Kengni Noubissie Guyssela Josiane Kana Jean Raphaël ngouana tadjong Ruben Yemdjie Mane Doriane Divine Ebile Dayan Agwa Tchouan Deffo Gilchrist Necdem Tsafack Boris Valdes Issa Bachar Issa Laboratory of Animal Nutrition Department of Animal Science University of Dschang Cameroon Laboratory of Aquaculture and Demography of Fisheries Resources Department of Aquaculture institute of Fisheries and Aquatic Science of Yabassi University of Douala Cameroon Laboratory of Aquaculture and Demography of Fisheries Resources Department of Aquaculture institute of Fisheries and Aquatic Science of Yabassi University of Douala Cameroon

Microbial resistance in livestock has become a subject of great concern of public and scientific interest. This study was designed to assess the effects of methenamine feeding regime on growth performances of broilers chickens. For this purpose, 120 chicks of Cobb 500 strain, including 60 males and 60 females of 21 days old with an average weight of 639 g and 584 g respectively were used. They were randomly distributed in 60 experimental units of 2 chicks of same sex per cage until 49 days. Methenamine was incorporated in feed (TA), acidified (TEa) and non acidified (TE) water and compared to an antibiotic medicated diet as positive control (T0+) and a ration without any supplement as negative control (T0). The main results showed that, regardless of the feeding regime, methenamine significantly (p 0.05) increased feed inteake, body weight, weight gain and decreased (p 0.05) feed conversion ratio. Methenamine whatever the feeding regime induced a significant increase in lactic acid bacteria counts compared to coliforms and coccidies counts. Salmonella were absent throughout the trial period. Regardless of sex and feeding regime, hematological parameters were not significantly affected, with the exception of white blood cell and platelet concentration that decreased significantly (p 0.05) in male broilers. Serum content in ASAT (Aspartate-transferase), ALAT (Alanine-transferase), creatinine, urea and LDL-