Relations between household livestock ownership, livestock disease, and young child growth

Background: In resource-limited settings in which child malnutrition is prevalent, humans live in close proximity to household livestock. However, the relation between household livestock and child nutrition represents a considerable knowledge gap. Objective: We assessed whether household livestock ownership or livestock disease episodes were associated with growth in young children in western Kenya. Methods:We incorporated monthly anthropometricmeasurements for children < 5 y of age into an ongoing linked human and animal surveillance cohort in rural western Kenya. Using linear mixedmodels adjusted for age, sex, and household wealth, we tested whether baseline household livestock ownershipwas related to baseline child height for age or prospective growth rate. We also evaluated whether livestock disease episodes were associated with child growth rate over 11 mo of follow-up. Results: We collected data on 925 children over the course of follow-up. Greater household livestock ownership at baseline was not related to baseline child height-for-age z score (adjusted b: 0.01 SD; 95% CI: 20.02, 0.04 SD) or child growth rate (adjusted β: 0.02 cm/y; 95% CI: 20.03, 0.07 cm/y). Livestock disease episodes were not significantly associated with child growth across the entire cohort (adjusted b: 20.007 cm/mo; 95% CI: 20.02, 0.006 cm/mo). However, children in households with livestock digestive disease between June and November gained less height than did children in households that did not report livestock disease (b: 20.063 cm/mo; 95% CI: 20.112, 20.016 cm/mo). Children < 2 y of age in households with livestock digestive disease gained less weight than did those who did not report disease (β: 20.033 kg/mo; 95% CI: 20.063, 20.003 kg/mo). Conclusion: In this cohort of young children in western Kenya, we did not find an association between ownership of livestock and child growth status. However, disease episodes in household livestock may be related to a lower child growth rate in some groups.