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加纳北部和坦桑尼亚中部小农户村庄家禽养殖系统中的家禽健康制约因素。

Poultry health constraints in smallholder village poultry systems in Northern Ghana and Central Tanzania.

作者信息

Ouma Emily Awuor, Kankya Clovice, Dione Michel, Kelly Terra, Enahoro Dolapo, Chiwanga Gaspar, Abukari Yakubu, Msoffe Peter, Kayang Boniface Baboreka, Zhou Huaijun

机构信息

International Livestock Research Institute, Nairobi, Kenya.

Feed the Future Innovation Lab for Genomics to Improve Poultry, University of California, Davis, Davis, CA, United States.

出版信息

Front Vet Sci. 2023 Jul 3;10:1159331. doi: 10.3389/fvets.2023.1159331. eCollection 2023.

Abstract

INTRODUCTION

Smallholder poultry production is a major contributor to food security and rural livelihoods in low-and middle-income countries. However, infectious diseases limit improvements to smallholder poultry production and performance of the sector in general. Infectious diseases of poultry, especially viral diseases, have major impacts on the health and productivity of flocks and account for significant morbidities and mortalities of birds each year.

METHODS

This study utilized participatory epidemiology approaches to better understand the poultry health constraints and challenges faced by smallholder poultry producers in village poultry systems in Northern Ghana and Central Tanzania.

RESULTS

The results show dominance of small-scale semi-intensive and extensive scavenging poultry production systems in the study areas. Newcastle disease ranked as the highest cause of morbidity and mortality in chickens in the two countries. The disease occurred mainly during the months coinciding with the dry season in both countries. Other health challenges among poultry flocks included worm infestation, fowl pox, coryza, and coccidiosis. Producers, especially in rural locations, had poor access to veterinary services and critical inputs necessary for poultry production. In the Northern region of Ghana, producers lacked definitive diagnoses for sick poultry due to a shortage of veterinary personnel and diagnostic laboratories.

DISCUSSION

These challenges point to the need for increased investment in poultry disease control and prevention programs, particularly in rural areas. Interventions focused on expansion of veterinary and agricultural extension services and diagnostic laboratory capacity in rural areas and increased gender-sensitive training to enhance smallholder knowledge in poultry husbandry and disease prevention measures will support the development of the smallholder village poultry systems. Tapping into the diverse genetic reservoir of local chicken ecotypes with enhanced resistance to Newcastle disease through genomic selection, coupled with models for enhancing ND vaccination supply and use in the rural areas are potential future avenues for addressing ND constraints to production.

摘要

引言

在低收入和中等收入国家,小农家禽养殖对粮食安全和农村生计做出了重大贡献。然而,传染病限制了小农家禽养殖的改善以及该部门总体表现的提升。家禽传染病,尤其是病毒性疾病,对鸡群的健康和生产力有重大影响,每年导致大量鸡发病和死亡。

方法

本研究采用参与式流行病学方法,以更好地了解加纳北部和坦桑尼亚中部乡村家禽养殖系统中小农家禽生产者面临的家禽健康制约因素和挑战。

结果

结果显示,研究区域内小规模半集约化和粗放式散养家禽生产系统占主导地位。新城疫是这两个国家鸡发病和死亡的首要原因。该病主要发生在两国与旱季重合的月份。家禽群面临的其他健康挑战包括蠕虫感染、鸡痘、鼻炎和球虫病。生产者,尤其是农村地区的生产者,获得兽医服务和家禽生产所需关键投入的机会很少。在加纳北部地区,由于兽医人员和诊断实验室短缺,生产者无法对患病家禽进行明确诊断。

讨论

这些挑战表明需要增加对家禽疾病控制和预防计划的投资,特别是在农村地区。重点在于扩大农村地区的兽医和农业推广服务以及诊断实验室能力,并增加对性别敏感的培训,以提高小农在家禽饲养和疾病预防措施方面的知识,这将有助于小农乡村家禽养殖系统的发展。通过基因组选择利用对新城疫具有更强抵抗力的当地鸡生态型的多样基因库,再结合加强农村地区新城疫疫苗供应和使用的模式,是未来应对新城疫对生产造成制约的潜在途径。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82b5/10352078/0a7821bd2953/fvets-10-1159331-g001.jpg

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