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.
Timeline of feed experiments and of odour sampling. Nine hens were successively fed with unsupplemented feed for 7 days (STD1, T0 to T + 7), then with supplemented feed for an additional 7 days (NOR1, T + 7d to T + 14). The same sequence was repeated over another two-week period immediately following (STD2, T + 14 to T + 21 and NOR2T + 21 to T + 28). Individual odour trapping was performed after a minimum of three days of treatment over a week (dark grey areas).
