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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.