Excess antibiotics will hinder the digestion of grasses in dairy cows.
Digestion in cows
Cows are able to digest grasses through a symbiotic association with some cellulose-digesting bacteria in their stomach.
Without these bacteria, the digestion of cellulose (the main component of grasses) would become impossible.
Excessive usage of antibiotics by cows may end up killing some of the symbiotic bacteria, thus making the digestion of grasses difficult.
More on digestion in cows can be found here: https://brainly.com/question/2031186
