1. Goats use rumen, reticulum and omasum to digest silage.

2. The stomach included rumen, reticulum, omasum and abomasum.

3. The sensory quality of beef omasum treated with the different concentrations of lactic acid was evaluated with fuzzy mathematics. And the test stated that 2 % lactic acid was the best of all.

4. Analyzing the motion of ovuie omasum in normal state and the motional regularity was obtained preliminarily.

5. The effect of lactic acid on eliminating black membrane of beef omasum is studied in this paper.

6. The effect of acid on eliminating black membrane of beef omasum is studied in this paper.