An Initial Analysis of Adoption of Animal Welfare Guidelines on the U.S. Egg Industry
分析美国蛋业因动物福利指南形成的二元市场（高价壳蛋与低价加工蛋）对消费者和生产者的影响，指出高峰需求期限制低价蛋进入壳蛋市场会抬高壳蛋价格、压低加工蛋价格，并识别出赢家与输家。
Animal welfare activists have succeeded in persuading egg purchasers to purchase only eggs that are produced according to new animal welfare guidelines. This agreement will increase the cost of producing eggs that are sold in the shell. To date, the guidelines do not apply to eggs that are broken and further processed. This agreement creates a bifurcated market: high-cost eggs in the shell and lowcost eggs that are processed. We conduct a qualitative analysis of the effects on consumers and producers from creation of this new market structure. Restricting the movement of low-cost eggs into the in-shell market in periods of peak demand will increase the price of in-shell eggs and will decrease the price of eggs destined for processing in these periods. Winners from adopting this restriction are those producers who produce only for the inshell market. Losers from this restriction are producers who only produce for the processing market. We are currently undertaking a companion study that will provide estimates of the magnitude of the gains and losses from this new market structure.