Bacterial isolates from raw beef retailed at Rukuba market, Jos, Nigeria

Animal Production Research Advances Pub Date : 2007-08-03 DOI:10.4314/APRA.V2I4.36351

I. Ameh, J. E. Amadusa

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引用次数: 1

Abstract

Microbiological examination of meat is an important aspect of meat inspection and meat hygiene for food security. Colony plate macroscopic and microscopic examinations as well as various biochemical tests showed thirteen isolates from 300 samples of retailed raw beef and the meat contact surfaces at the Rukuba local market in Jos, Nigeria. Meat contamination (88 or 59.1%, n = 150) was significantly higher (p Pseudomonas, E. coli and Proteus were more frequently seen in meat at rates of 16.0, 14.7 and 6.7% respectively, while Staphylococcus aureus, Aeromonas and Streptococcus were the highest contaminants of contact surfaces at a rate of 5.3% each. Other isolates were Klebsiella (3.0%), coagulase negative Staphylococcus (2.7%), Bacillus (2.3%), Micrococcus (2.0%), Corynebacterium (1.7%), Clostridium and Serratia (1.0%). Mean count of E. coli (5.5x107 cfu/g) and Proteus (1.8x107 cfu/g) were the highest of the microbial density. There was higher contamination of the intestine (52.3%) than either the liver (27.3%, n= 50) or muscle (20.4%, n=50) but the difference was not statistically significant (p>0.05). Keywords : Beef, Bacteria, Contamination, market, Nigeria > Animal Production Research Advances Vol. 2 (4) 2006: pp. 239-243

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尼日利亚乔斯Rukuba市场零售的生牛肉中分离出的细菌

肉类微生物检验是肉类检验和肉类卫生保障的一个重要方面。菌落平板宏观和微观检查以及各种生化测试显示，从尼日利亚乔斯Rukuba当地市场零售生牛肉和肉类接触表面的300个样本中分离出13个菌株。肉制品污染率(88或59.1%，n = 150)显著高于肉制品(p假单胞菌、大肠杆菌和变形杆菌在肉制品中较常见，其污染率分别为16.0%、14.7%和6.7%)，而接触表面污染物最多的是金黄色葡萄球菌、气单胞菌和链球菌，其污染率分别为5.3%。其他分离株为克雷伯氏菌(3.0%)、凝固酶阴性葡萄球菌(2.7%)、芽孢杆菌(2.3%)、微球菌(2.0%)、棒状杆菌(1.7%)、梭菌和沙雷氏菌(1.0%)。大肠杆菌平均计数(5.5 × 107 cfu/g)和变形杆菌平均计数(1.8 × 107 cfu/g)最高。肠道污染(52.3%)高于肝脏(27.3%，n=50)和肌肉(20.4%，n=50)，但差异无统计学意义(p>0.05)。关键词:牛肉，细菌，污染，市场，尼日利亚>动物生产研究进展Vol. 2 (4) 2006: pp. 239-243

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Animal Production Research Advances

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