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Nutritional Quality of Meat from Cattle Breed in Livestock Production Area of Cameroon

Open Journal of Animal Sciences 2022年第3期12卷 467-483页

作者： Ronald Vougat Ngom Vincent de Paul Ndzana Dangwang Bohounbele Veronique Houli boubakary Oumara Andre Zoli Pagnah Department of Animal Production School of Veterinary Medicine and Sciences University of Ngaound&#233r&#233 Ngaound&#233r&#233 Cameroon Comité International de la Croix-Rouge Antenne de Maroua Maroua Cameroun Far North Regional Delegation of Livestock Fisheries and Animal Industries Maroua Cameroon Centre d’Appui à la recherche et au Pastoralisme Maroua Cameroun

In Cameroon, foods of animal origin are an important part of the population’s diet. To improve meat consumption and assure its safety, the Government plan a project for the industrialization of cattle and pig industries by building a slaughter chain, cold stores and acquiring of vehicles and trucks for the transport of meat from livestock production areas to other parts of the country. Maroua city in the Far North Region has been selected to host a modern mixed slaughterhouse with a slaughter capacity of 150 cattle/day. To assess the impact of this project, it is important to define a baseline in term of beef quality prior to the implementation of such a project. Therefore, this study aimed to evaluate the nutritional quality of beef in Maroua (as a reference for livestock production area in Cameroon) in relation to demographics of cattle (production system, type of production, age, breed, body condition score [BCS], and sex). In 2014, data on demographics of 202 cattle, randomly selected in the traditional slaughterhouses of Maroua were collected. At the end of the slaughter chain, approximately 250 g of thigh were sampled from each animal selected. However, 76 randomly selected thigh meat samples were suggested for chemical composition analysis by using standard methods. Results revealed that dry matter (26.30% - 29.88% of fresh matter), ash (0.92% - 1.09% of fresh matter), total fat (10.12 - 19.58 of fresh matter) and protein (8.60% - 27.59% of fresh matter) content of beef were between the acceptable ranges for table meats. The total protein content found was affected by the BCS, the age at slaughter, the breed and the sex of the animal. In addition, as expected, the total fat content increased with the BCS and varied with the age at slaughter and the type of production. Since the fat content decreased with age and varied with the type of production, it would be interesting for further study, to determine the fatty acids profile of meat from fattening cattle of

关键词： Nutritional Quality Chemical Composition Beef Cattle Cameroon

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Dynamic of Mangrove Associated Molluscs in Anthropized Areas of the Cameroon Coastline

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Open Journal of Ecology 2021年第8期11卷 565-579页

作者： Ernest Flavien Kottè-Mapoko Vanessa Maxemillie Ngo-Massou Guillaume Léopold Essomè-Koum Laurant Nyamsi-Moussian Alphonse Konango-Samè boubakary Ndongo Din Department of Fisheries Management Institute of Fisheries and Aquatic Sciences at Yabassi the University of Douala Douala Cameroon Department of Biological Sciences Higher Teacher’s Training College the University of Yaoundé Yaoundé Cameroon Department of Aquatic Ecosystems Management Institute of Fisheries and Aquatic Sciences at Yabassi the University of Douala Douala Cameroon Department of Botany Faculty of Sciences the University of Douala Douala Cameroon

Due to unabated anthropogenic exploitations, mangrove forests globally are constantly under pressure and degradation, which may result in the reduction of ecosystem functioning and biodiversity. Molluscan fauna, which is one of the main macroinvertebrates that play a major ecological role in nutrient dynamics in mangroves, are sensitive to the changes in their habitat. This survey aims to assess the impact of anthropogenic activities on the diversity of molluscs’ communities in the mangrove forest. Anthropogenic disturbances within 20 sampling sites were valued at six mangrove stands and patched scoring the degree of influence according to vegetation, structure, waste and trampling. Molluscs were caught by hand and counted within 1 × 1 m2 plots placed at three points distant of 50 m established using a straight line transect of 100 m. Upon the 20 sites investigated, five were slightly disturbed, eight moderately disturbed and seven sites were highly disturbed. The mean abundance of molluscs decreased from slightly disturbed areas (172.25 ± 73.09 Ind·m−2) to highly disturbed areas (100.57 ± 62.84 Ind·m−2). Highly disturbed areas have shown lower species richness (R = 1.09 ± 0.15) and diversity (H’ = 2.30 ± 0.31). Human activities in the mangrove forest could particularly have effects on the diversity of molluscs, however, feature potential conservation measures have to be in harmony with the needs of the local population.

关键词： Anthropogenic Disturbance Index Human Activities Level of Degradation Mollusc Diversity

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