The Telegraph 19 Oct 2011
"Moving horses long distances makes them faster as scientists discover 'Jet Nag'"
"Unlike humans, horses recover very quickly from the effects of crossing time zones because their bodies are highly sensitive to changes in light and are not strongly attached to a 24-hour cycle."
read the article at
http://tinyurl.com/3hjdatk
Interesting - consider for BC shippers from Europe.