Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Fraction of common directed links per year time difference (stripcharts) – medians are shown in red – (A) Considering live poultry lighter than 185 g from 2004 to 2016; (B) Live poultry of 185 g or more from 2004 to 2016; and (C) Poultry hatching eggs from 2012 to 2016.
