Drivers of vaccination preferences to protect a low-value livestock resource: Willingness to pay for Newcastle disease vaccines by smallholder households.

摘要: Vaccination can be an effective risk management approach to minimize the burden of disease and increase livestock productivity for smallholder households in low income countries. In contrast vaccination cattle, a high-value asset, there is significant knowledge gap drivers vaccine adoption poultry. Newcastle virus (NDV) causes high mortality chickens one greatest constraints East African poultry production. To determine preferences willingness pay NDV vaccines by chicken-owning Tanzania, we administered survey with contingent valuation activity 535 across six villages Arusha, Singida, Mbeya regions. Given current rate, tested null hypothesis that do not value found overwhelming evidence smallholders vaccines. The (WTP) estimate was 5853 Tanzanian shillings ($2.64) vaccinate ten given protective period three months. This about twice market price reported study areas suggesting benefit from vaccines, but face other barriers vaccination. Previous had largest positive effect size on WTP observe benefits vaccinating. studies higher-cost cattle where off-farm sources often drive pay, on-farm driver different affect protection low-value assets as compared assets.