DRY matter intakes of dairy cow diets can be restricted by feed trough design and management, said US vet Bill Prokrop.
"When theres no feed in a trough you are not maximising dry matter intake.
"Dry matter intakes in a deep, dark bunker are also reduced. And when cows heads are too high when they eat they produce less saliva to buffer acid."
A trough with a rough, worn out bottom or which hasnt been cleaned out and smells bad wont encourage cows to eat. This may be the case when cows are keener to eat from the top of trough wall than the bottom of the trough, he explained. *