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:Which of the following is not a characteristic of pigs? The part of the digestive tract of birds which…In the diagram below which shows the digestive tract…The diagram below illustrates the digestive tract of…Which of the following structures produces the…