Which of the following structures is not a part of the digestive tract of pigs? By: Sunday|Published on: Jun 8|Categories: Agricultural Science WAEC| 0 comments A. oesophagus B. proventriculus C. duodenum D. colon Correct Answer: Option B – proventriculus Users Also Read These:Â The part of the digestive tract of birds which…The most likely mode of an organism that possesses…In the diagram of the digestive tract of a farm…The part of the ruminant stomach from which…In the diagram below which shows the digestive tract…SEE ALSO The two main elements of climate which affect soil formation are?