Testing for Cointegration and Granger Causality: Evidence from Selected Indigenous Egg Markets in Kenya

Dennis O. Olila, Kenneth Wanjau, Kennedy Pambo, Evans L. Chimoita, Timothy Odipo


Despite the increasing consumer demand for indigenous eggs, particularly among the urban rich in Kenya, empirical analysis of spatial market integration has received limited attention. This study is an attempt to analyze the existence of market integration and price transmission among four selected indigenous egg markets. The study uses secondary data obtained on prices of eggs on a weekly basis during the year 2014. Analysis of Cointegration and Granger causality was attained using Johansen cointegration approach. Interestingly, results indicate integration in the indigenous eggs markets in Kenya. While prices of eggs in Kisumu and Eldoret towns Granger-caused each other, there was no evidence to account for price interactions among the rest of the markets. These findings strongly indicate asymmetric price transmission within the markets. Taking advantage of the promising niche provided by indigenous eggs requires policies aimed at unlocking information asymmetry as well as promoting market access among farmers.

Key words: Market integration, Granger causality, indigenous eggs, Kenya

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ISSN 2422-8451

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