Give four differences in digestion between a sheep and a pig.
- sheep have four stomach chambers/polygastric while pigs have simple stomach/monogastric
- Sheep chew the cud while pigs do not chew the cud
- Sheep have no ptyalin in saliva while pigs have
- digestion of cellulose occurs in the rumen in sheep while in pigs it occurs in the caecae
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