Is progesterone now allowed for estrus synchronization in lactating dairy cows in the US? Even if it is synthetic with its longer half-life?

P4 (e.g. in CIDR) was not allowed for lactating cows so it is not consumed by those drinking the milk. There have been efforts to get it approved in lactating dairy cows with the argument that...

29 March 2015 3,743 5 View