LIFE SCIENCE

Detailed explanation-1: -A calf is born with an esophageal groove, which consists of muscular folds from the reticulorumen that come together to bypass the rumen, reticulum and omasum through to the abomasum when the calf drinks milk. The suckling reflex and milk protein stimulate the groove to open.

Detailed explanation-2: -Reticular groove closure in ruminants is a primary mechanism, almost exclusive of lactating animals, which makes the passage of food from the orifice of cardia to the abomasum possible, thus avoiding unwanted fermentations in rumen and reticulum.

Detailed explanation-3: -Ruminant Digestive Development The reticular groove (sometimes referred to as esophageal groove) in these young animals is formed by muscular folds of the reticulum. It shunts milk directly to the omasum and then abomasum, bypassing the reticulorumen.