“Utilization of The Mobile Bag Technique to Determine
Intestinal Digestibility of Feedstuffs”
[digestibility, mobile bag]
Mobile bag technique was used to determine intestinal digestibility of rumen undegradable protein (RUP) of SoyPass (SP) and other ingredients in diets that were traditional or based on high levels of wet corn gluten feed (WCGF). RUP digestibilities were highest for SoyPass and soybean meal and lower for corn-based proteins.
Sample*

RUP,
% of CP

Total tract digestible protein,
% of CP

RUP digestibility, %

Alfalfa haylage
7.9
95.1
36.5

Corn silage
18.9
82.9
17.2

Ground corn
49.3
84.9
68.8

Corn bran
25.6
87.4
50.0

Dried distillers grains
39.1
93.4
83.4

Soybean meal
30.2
99.1
97.7

SoyPass
79.7
98.3
97.3

Whole cottonseed
12.8
89.3
96.7
*Listed results are for the WCGF diet only.
S. K. Ivan, H. L. Haugen, T. J. Klopfenstein, (2004), J Anim Sci 82, Suppl. 1, 214.