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Abstract
Dairy cow ownership has been widely promoted by a number of development projects in Kenya
(and other countries in East Africa) for the last two decades, and the country has the largest
population of smallholder producers with dairy cows in sub-Saharan Africa. Supporters of dairy
development efforts often have assumed that there will be positive nutritional impacts from
increased milk consumption by dairy cow-owning households. This expectation has been further
strengthened by recent research findings about the micronutrient benefits of animal product
consumption. However, the nutritional impacts of more intensive dairying have received
relatively little study to date in East Africa.
This paper develops a conceptual framework that identifies key pathways through which dairy
cow ownership may have both positive and negative impacts on child nutritional status. Using
household- and child-level data on dairy cow owners and non-owners in coastal and highland
Kenya, two alternative econometric models are used to estimate the impacts of the number of
dairy cows owned, controlling for child characteristics, household head characteristics, and other
household characteristics. To explore a principal hypothesized pathway through which dairy
cows may influence nutritional outcomes, additional econometric models explore the impact of
household income on nutritional status.
Consistent with two previous studies, cattle ownership per se had a statistically significant
positive impact on height-for-age (a measure of longer-term growth) in both regions. The
number of dairy cows has a limited impact on weight-for-height, a measure of short-term child
nutritional status. In coastal Kenya, however, there is evidence that dairy cow ownership has a
positive impact on height-for-age. Household income has limited positive impacts on nutritional
status at the coast. In the Kenyan highlands, our results suggest a marginally significant negative
impact of household income on both weight-for-height, but existing data do not allow
exploration of the sources of this anomalous result.
Overall, the evidence suggests that dairy cow ownership per se does not result in negative
nutritional impacts of dairy cow ownership, which implies that dairy development efforts have
not increased child malnutrition. However, the evidence also suggests that positive nutritional
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impacts expected for more intensive dairying—particularly from increases in household
income—may be limited. Further site-specific study of the pathways influencing household
nutrient allocation, child morbidity, and labor requirements should be undertaken to inform
policy and program efforts to enhance the nutritional benefits of dairy cow ownership.