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Knowledge on diseases, practices, and threats of drugs residues in chicken food chains in selected districts of Dodoma region, Tanzania
Journal of Applied Poultry Research ( IF 1.6 ) Pub Date : 2021-06-25 , DOI: 10.1016/j.japr.2021.100186
Andrew Chota , Omary Kitojo , Kelvin Ngongolo

Raising chickens is a rapidly growing subsector in the livestock industry. However, low biosecurity results in increased disease spread and the use of drugs in chicken flocks. Increased use of drugs threatens public health, as it poses risks of drug residues and resistant pathogens escaping into chicken food chains or infecting humans respectively. A cross sectional questionnaire survey and on-field clinical and postmortem diagnoses were carried out to establish farmers' awareness of diseases, drugs, and withdrawal times. It was established that 82% (n = 200) of local chicken keepers strongly agreed that, Newcastle disease was a major problem whereas, 43.5% (n = 200) of the farmers who kept layers strongly agreed that Fowl typhoid was the major problem. Concurrent occurrence of Ascaridia galli infestations and Coccidiosis had a significant association with local chickens (odds ratio [OR] = 7.2, 95% confidence interval [CI], 3.6–14.4, P < 0.05) whereas, concurrent infections of salmonellosis and colibacillosis had a significant association with mortality in layers (OR = 2.8, 95% CI, 1.6–5.2, P < 0.05). In local chickens, 91.1% (n = 200) relied on prophylactic drugs and in layers, 62.5% (n = 200) relied on treatment and vaccination for disease control, and only 48.2% (n = 200) and 24% (n = 200) respectively, knew about the withdrawal period. Oxytetracycline in 62 and 43.5%, enrofloxacin in 9 and 19.5%, and tylosin in 5 and 26.5% of local chickens and layer keepers respectively, were the most commonly used drugs. High mortality, mean 94.79 (SE; 86.05–103.53) per flock life span was observed in layers. Mortality resulting from diseases results in the continuous use of antibiotics in chicken flocks, as a result, with or without knowledge of drug withdrawal periods, the products and by-products sent into the food chain pose a significant public health concern.



中文翻译:

坦桑尼亚多多马地区选定地区鸡肉食品链中药物残留的疾病、做法和威胁的知识

养鸡是畜牧业中一个快速增长的子行业。然而,低生物安全性导致疾病传播增加和鸡群中药物的使用。药物使用的增加威胁着公众健康,因为它带来了药物残留和抗药性病原体分别逃逸到鸡肉食品链或感染人类的​​风险。通过横断面问卷调查和现场临床和尸检诊断,建立农民对疾病、药物和停药次数的认识。确定 82% (n = 200) 的当地养鸡者强烈同意新城疫是一个主要问题,而饲养蛋鸡的农民中有 43.5% (n = 200) 强烈同意家禽伤寒是主要问题。鸡蛔虫并发感染和球虫病与当地鸡有显着相关性(优势比 [OR] = 7.2,95% 置信区间 [CI],3.6-14.4,P < 0.05),而沙门氏菌病和大肠杆菌病的并发感染与死亡率显着相关层(OR = 2.8,95% CI,1.6–5.2,P <0.05)。在地方鸡中,91.1%(n = 200)依赖预防药物和蛋鸡,62.5%(n = 200)依赖治疗和疫苗接种以控制疾病,只有48.2%(n = 200)和24%(n = 200) 分别知道退出期。土霉素(62% 和 43.5%)、恩诺沙星(9% 和 19.5%)和泰乐菌素(分别在 5% 和 26.5% 的当地鸡和蛋鸡饲养者中使用)是最常用的药物。在蛋鸡中观察到高死亡率,每个鸡群寿命平均为 94.79 (SE; 86.05–103.53)。疾病导致的死亡率导致鸡群中不断使用抗生素,因此,无论是否了解药物停药期,进入食物链的产品和副产品都会引起重大的公共卫生问题。

更新日期:2021-08-17
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