Ramsey A Ford, Goodwin Barry K, Hahn William F, Holt Matthew T
Department of Agricultural and Applied Economics Virginia Tech Blacksburg Virginia USA.
Department of Economics and Department of Agricultural and Resource Economics North Carolina State University Raleigh North Carolina USA.
Agric Econ. 2021 May;52(3):441-458. doi: 10.1111/agec.12628. Epub 2021 May 4.
Coronavirus 2019 (COVID-19) has caused ongoing disruptions to U.S. meat markets via demand and supply-side shocks. Abnormally high prices have been reported at retail outlets and meat packers have been accused of unfair business practices because of widening price spreads. Processing facilities have experienced COVID-19 outbreaks resulting in shutdowns. Using weekly data on wholesale and retail prices of beef, pork, and poultry, we characterize the time series behavior and dynamic linkages of U.S. meat prices before the COVID-19 pandemic. We model vertical price transmission using both linear and threshold autoregressive (AR) models and vector error correction (VEC) models. With the estimated models, we then compare price movements under COVID-19 to model predictions. All three meat markets are well-integrated and we observe unexpected, large price movements in April and May of 2020. Early COVID-19 related shocks appear to be transitory with prices returning to expected levels at a pace consistent with the speed of transmission prior to the pandemic. This well-functioning market process suggests a degree of resilience in U.S. meat supply chains.
2019年冠状病毒病(COVID-19)通过需求和供应端冲击持续扰乱美国肉类市场。零售网点报告称价格异常高企,肉类加工商因价格差距不断扩大而被指控存在不公平商业行为。加工设施出现了COVID-19疫情,导致停工。利用牛肉、猪肉和家禽批发及零售价格的每周数据,我们刻画了COVID-19大流行之前美国肉类价格的时间序列行为和动态联系。我们使用线性和阈值自回归(AR)模型以及向量误差修正(VEC)模型对垂直价格传导进行建模。利用估计的模型,我们随后将COVID-19期间的价格走势与模型预测进行比较。所有三个肉类市场整合良好,我们在2020年4月和5月观察到了意外的大幅价格波动。与COVID-19相关的早期冲击似乎是暂时的,价格正以与大流行之前传导速度一致的步伐恢复到预期水平。这种运转良好的市场过程表明美国肉类供应链具有一定程度的韧性。