Which of the following structures is not a part of the digestive tract of pigs? by Sunday | Jun 8 | Agricultural Science WAEC | 0 comments A. oesophagus B. proventriculus C. duodenum D. colon Correct Answer: Option B – proventriculus Users Also Read These:The most likely mode of an organism that possesses…The diagram below illustrates the digestive tract of…In the diagram below showing the digestive tract of… The part of the digestive tract of birds which…The diagram below is the digestive tract of a farm…