4.4. Rumen microorganism population
Ruminal bacteria count and cellulolytic bacteria were highest (9.1 × 1011, and 4.0 × 109 cfu/mL, respectively) with U-Cas supplementation. If urea is more slowly released in the rumen it will be more consistently available to rumen cellulotytic bacteria (Russell and Rychlik, 2001 and Udén, 2006).