Impact of Peste des Petits Ruminants for sub-Saharan African farmers: a
bioeconomic household production model
Abstract
Peste des petits ruminants (PPR) is a contagious disease affecting small
ruminants. It has been targeted by the global community for eradication
within the next 10 years. Implementing eradication requires significant
financial efforts, human resources, coordination among actors, and
individual commitments. The objective of this study is to estimate the
cost of PPR at household level, thereby providing economic information
about the potential benefits for small ruminant keepers of PPR control
and management strategies. Fifteen Sub-Saharan countries are included in
this study, for which publicly available household level data assembled
by FAO were used. We built a bioeconomic model to estimate the impact of
PPR for a standardized theoretical area where each household raises an
average herd comprising either 6 goats or 3 sheep and their offspring.
We then used the outputs of the model to estimate the income loss due to
PPR at household level. We constructed different income scenarios to
account for the variability of small ruminant income in total annual
income. The household income losses ranged from 0.6 to 44.8 percent of
the total annual income. The percentages vary depending on the income
scenario and on the gross annual economic impact of PPR on small
ruminant production, which ranges from 25 to 80 percent based on the
results of the bioeconomic model. Regardless of the income scenario,
households in lower income quintiles are relatively more affected by PPR
than households in upper quintiles. As expected, the more small ruminant
production contributes to household income the greater the impact. We
provide here estimates that may help, from a policy perspective,
identifying the most relevant strategies and tailoring them at regional
level to mitigate PPR impacts.