Meyer Anne, Ndiaye Bakary, Larkins Andrew, Chaters Gemma, Gilbert William, Huntington Benjamin, Ilboudo Guy, Dione Michel, Jemberu Wudu Temesgen, Diouf Mame Nahé, Fall Assane Gueye, Fall Mathioro, Lo Mbargou, Rushton Jonathan
Global Burden of Animal Diseases (GBADs), Institute of Infection, Veterinary and Ecological Sciences, Department of Livestock and One Health, University of Liverpool, Liverpool, United Kingdom; Episystemic, Lyon, France.
Laboratoire National de l'Elevage et de Recherches Vétérinaires, Institut Sénégalais de Recherches Agricoles, Dakar, Senegal.
Prev Vet Med. 2025 Jan;234:106382. doi: 10.1016/j.prevetmed.2024.106382. Epub 2024 Nov 12.
Small ruminant production in sub-Saharan Africa is limited by a range of constraints, including animal health issues. This study aimed at estimating the impact of these issues on the small ruminant production in Senegal in a holistic manner, using an approach developed by the Global Burden of Animal Diseases (GBADs) programme. The estimation focused on the mixed crop-livestock system, representing a large proportion (>60 %) of the small ruminant population in the country. It was based on existing data collected via a systematic literature review, acquisition of secondary datasets from local stakeholders, and expert elicitation. A dynamic population model was used to calculate the gross margin of the sector under both the current health constraints and an ideal health state, where animals are not exposed to causes of morbidity and mortality. The difference between the current and ideal health scenarios, termed the Animal Health Loss Envelope (AHLE), provides a quantitative measure of the farm-level cost of disease in the system. The all-cause AHLE was estimated at 292 billion FCFA (468 million USD, with 95 % prediction interval 216 - 366 billion FCFA) per year for 2022, for a population of 8.8 million animals. The contribution of Peste des Petits Ruminants (PPR) was modelled separately, as an example of attributing part of the AHLE to a specific disease cause. PPR was estimated to contribute 5 % of the total AHLE. The animal disease burden experienced by Senegalese livestock keepers was largely due to loss in animals and production, with relatively small amounts of animal health expenditure. Implementation of this study contributed to the further development of the GBADs approach. Such estimates can support decision making at all levels, from investment decisions at the international level to local disease awareness campaigns targeting livestock keepers.
撒哈拉以南非洲的小反刍动物生产受到一系列制约因素的限制，包括动物健康问题。本研究旨在采用全球动物疾病负担（GBADs）计划开发的方法，全面评估这些问题对塞内加尔小反刍动物生产的影响。评估重点关注作物-畜牧混合系统，该系统占该国小反刍动物种群的很大比例（>60%）。评估基于通过系统文献综述收集的现有数据、从当地利益相关者获取的二手数据集以及专家意见。使用动态种群模型计算该部门在当前健康制约因素和理想健康状态（即动物不接触发病和死亡原因）下的毛利润。当前和理想健康情景之间的差异，称为动物健康损失总量（AHLE），提供了该系统中农场层面疾病成本的定量衡量。2022年，对于880万只动物的种群，全因AHLE估计为每年2920亿非洲法郎（4.68亿美元，95%预测区间为2160亿 - 3660亿非洲法郎）。小反刍兽疫（PPR）的贡献单独建模，作为将部分AHLE归因于特定疾病原因的一个例子。据估计，PPR占AHLE总量的5%。塞内加尔牲畜饲养者所经历的动物疾病负担主要是由于动物和生产损失，动物健康支出相对较少。本研究的实施有助于GBADs方法的进一步发展。此类估计可为各级决策提供支持，从国际层面的投资决策到针对牲畜饲养者的地方疾病宣传活动。
