What practice helps maintain rumen pH when increasing concentrate in the diet?

• A. Increase forage to stimulate chewing
• B. Use buffers in the diet
• C. Increase water intake
• D. Manage fiber to maintain rumen pH and intake

Answer: (B)

Rumen pH drops when more concentrate is fed because starches and sugars ferment quickly, producing acids that accumulate in the rumen. Introducing buffers into the diet provides neutralizing agents (like bicarbonate) that resist this acid buildup, helping to keep rumen pH in a healthy range. This direct buffering action supports the rumen’s microbial balance, especially the fiber-digesting bacteria that require a stable pH to function well.

While increasing forage can help by stimulating chewing and saliva (which naturally buffers the rumen), and proper fiber management supports overall rumen function, the most targeted way to counteract the acid load from higher concentrate is to include dietary buffers. Water and fiber management contribute to comfort and intake, but they don’t directly neutralize rumen acids in the way buffers do.