Imam Tasneem, Gibson Justine S, Foysal Mohammad, Das Shetu Bhusan, Gupta Suman Das, Fournié Guillaume, Hoque Md Ahasanul, Henning Joerg
School of Veterinary Science, The University of Queensland, Gatton, QLD, Australia.
Chattogram Veterinary and Animal Sciences University, Chattogram, Bangladesh.
Front Vet Sci. 2020 Dec 16;7:576113. doi: 10.3389/fvets.2020.576113. eCollection 2020.
Commercial poultry production is growing rapidly in Bangladesh to address the increasing demand for poultry meat and eggs. Challenges faced by producers include the occurrence of poultry diseases, which are usually treated or controlled by antimicrobials. A cross-sectional study was conducted on 57 commercial layer and 83 broiler farms in eight subdistricts of the Chattogram district, Bangladesh, to assess antimicrobial usage in relation to clinical signs observed in chicken flocks on these farms. Of the 140 commercial chicken farms, 137 (97.9%) used antimicrobials and 24 different antimicrobial agents were administered. On layer farms, the most commonly used antimicrobials were ciprofloxacin (37.0% of farms, 20/54), amoxicillin (33.3%, 18/54), and tiamulin (31.5%, 17/54), while on broiler farms, colistin (56.6%, 47/83), doxycycline (50.6%, 42/83), and neomycin (38.6%, 32/83) were most commonly administered. Only 15.3% (21/137) of farmers used antimicrobials exclusively for therapeutic purposes, while 84.7% (116/137) of farmers used them prophylactically, administering them either for prophylactic purposes only (22.6% of farmers, 31/137) or in combination with therapeutic purposes (62.1% of farmers, 85/137). About 83.3% (45/54) of layer farmers were selling eggs while antimicrobials were being administered compared to 36.1% (30/83) of the broiler farmers selling broiler chickens while administering antimicrobials. Overall, 75.2% (103/137) of farmers reported clinical signs for which they administered antimicrobials, while 24.8% (34/137) of farmers reported no clinical signs but still administered antimicrobials. Respiratory signs (71.8% of farms with clinical signs, 74/103) were most commonly reported, followed by enteric signs (32.0%, 33/103) and increased mortality (16.5%, 17/103). About 37.2% (51/137) of farmers bought antimicrobials exclusively from feed and chick traders, followed by veterinary medical stores (35.0%, 48/137). Purchasing antimicrobials from feed and chick traders was more common among broiler than layer farmers. It is recommended that commercial poultry farmers should keep records of antimicrobials used with dosage and duration of administration along with indication of use. This would allow farmers and veterinarians to review if antimicrobial usage had the desired effects and to evaluate the appropriate use of antimicrobial agents under an antimicrobial stewardship approach.
为满足对禽肉和禽蛋日益增长的需求，孟加拉国的商业家禽养殖正在迅速发展。养殖户面临的挑战包括家禽疾病的发生，这些疾病通常使用抗菌药物进行治疗或控制。在孟加拉国吉大港区八个分区的57个商品蛋鸡场和83个肉鸡场进行了一项横断面研究，以评估抗菌药物的使用情况与这些农场鸡群中观察到的临床症状之间的关系。在140个商业养鸡场中，137个（97.9%）使用了抗菌药物，共使用了24种不同的抗菌剂。在蛋鸡场，最常用的抗菌药物是环丙沙星（占农场的37.0%，20/54）、阿莫西林（33.3%，18/54）和替米考星（31.5%，17/54），而在肉鸡场，最常用的是黏菌素（56.6%，47/83）、强力霉素（50.6%，42/83）和新霉素（38.6%，32/83）。只有15.3%（21/137）的养殖户仅将抗菌药物用于治疗目的，而84.7%（116/137）的养殖户预防性使用抗菌药物，要么仅用于预防目的（占养殖户的22.6%，31/137），要么与治疗目的联合使用（占养殖户的62.1%，85/137）。约83.3%（45/54）的蛋鸡养殖户在使用抗菌药物期间出售鸡蛋，相比之下，36.1%（30/83）的肉鸡养殖户在使用抗菌药物期间出售肉鸡。总体而言，75.
