Investigating of Unknown Multiple Structural Breakdates in Agricultural Prices (Case Study Animal Production)

Document Type : Research Paper

Authors

Abstract

Detection of structural changes and shocks in time series is a topic that has been discussed for many decades. Ignoring these change points in time series can lead to serious problems with economic models of time series. the purpose of this paper is investigation  of multiple structural breakdate in prices  of milk, egg, hen meat, sheep meat and beef for the period from January 1380 to December 1391  by means of QLR statistics. The results showed that there are one breakdate in price of milk, 2  braekdate in egg and  2, 0 and 2 breakdate in hen meat, sheep meat and beef, respectively. Some of macroeconomic policies such as unified exchange rate policies, targeted subsidies have been  the effective factors  on the occurrence of structural breaks in the series of prices.

Keywords