鸡消化道结构
鸡消化道结构
马消化道结构
马消化道结构
牛消化道结构
牛消化道结构
Preruminant calf at birth Heifer after weaning Esophagus To intestines Rumen Rumen 80% 25% Reticulum Reticulur Omasum 10% 5% 5% Abomasum Omasum 60% 8% Abomasum 7% The rumen is undeveloped Intake of dry feed,especially a Heifer ruminates and obtains and nonfunctional;milk by-passes grain or concentrate mix(starter) most of its energy and protein the rumen and is digested in the stimulates rumen growth from rumen fermentation abomasum and the intestines gure 1:Stages in rumen development
Figure 3:Feeding of a palatable grain starter and water allows rapid develop- ment of the rumen and early weaning