I keep the feed in the bucket untill my horses are calmed down...I refuse to feed when they are acting like crazies...Then I pour the feed into the trough and pet them while they are eating...touch their faces and rub their forlock.
I am pretty strict at feeding time. As I don't want to get hurt. I stand with the feed trought betweed me and the horses and they can not come over to my side...its my space...the whole 6' side of the trough I'm standing on...they have to be on the other side waiting patiently.
I don't know about the tap on the muzzle but Dumas was terribly head shy when we got him so we don't tap his face for disipline.
I do put the food in the bowl and make my dog wait to eat untill I give the command "go eat your beans"