Changes

*Water consumption does not usually iniatiate groove closure

*Water consumption does not usually iniatiate groove closure

'''Age when the rumen becomes fully functional and the oseophageal groove closes:'''

*Age when the rumen becomes fully functional and the oseophageal groove closes differs between ruminants

*In calves 20 weeks

**In calves 20 weeks

*In lambs 8 weeks

**In lambs 8 weeks

*In deer 16 weeks

**In deer 16 weeks

*In goats 12 weeks

**In goats 12 weeks