Explicación: The three most commonly used types of natural beef casing are beef rounds, beef middles, and beef bung caps. Beef rounds are derived from the small intestine of cattle, beef middles from the large intestine, and beef bung caps from the caecum, which connects the large and small intestines. http://tinyurl.com/26z2ly
...products in casings made from beef rounds (the small intestines of cattle)... http://tinyurl.com/29l6nl
The translation workplace 
