Protecting Livestock. Improving Human Lives

Estimating the impact of administration of dewormers on smallholder chickens in Odisha State, India

Author: Paul R Bessell, Ranjit Dash, Sanjay Prasad, Lamyaa Al-Riyami, Neil Gammon, Kristin Stuke, Roy Woolley, Miftahul Islam Barbaruah

Year: 2018

About this Publication:

Helminth infections, in particular infections with nematodes are highly prevalent and an impediment to the productivity of chickens in smallholder settings. Infections can be easily and cheaply treated using dewormers. We present an empirical framework for estimating the impact of administration of locally available dewormers on chicken weight in a smallholder setting in Odisha State of India. We recruited 1,040 chickens aged between 40 and 70 d from 168 households in 13 village groups in Odisha. Chickens were randomly assigned to treatment with a dewormer (fenbendazole), or non-treatment. Each chicken was tagged with 2 legbands and weighed, then followed up after 28 and 56 d and reweighed. To account for the local variations in exposure and for variations between flocks, the data were analyzed in a multilevel mixed model with flock within village as nested random effects. After 56 d, the modeled results showed that all chickens had gained a mean of 288.3 g but heavier chickens at the baseline gained more weight than lighter chickens. In addition to this, the treated chickens had gained an additional mean of 90.55 g relative to non-treated chickens (P

Grant: PLSHL2

Subject Areas: Monitoring and Evaluation



Chicken, India, Smallholder, dewormer, weight



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