Mpemba C, Laswai G H and Kimambo A E 2018:  
Comparison of rumen liquor from fistulated and slaughtered cattle in determination of in vitro digestibility of ruminant feeds. 
 Livestock Research for Rural Development. Volume 30, Article #11. 
 Retrieved 
, from http://www.lrrd.org/lrrd30/1/char30011.html