Nutrient Supply to the Newborn Ruminant

  • M. Ryle
  • E. R. Ørskov


The moment the navel cord is broken, during passage from the uterus to the external environment, major changes occur in the energy nutrition of the young. In fact, considering the complexity of the changes, it is remarkable that mortality is so low. One major change is in the route by which nutrients are supplied. Before birth, glucose, amino acids etc. are delivered directly via the placenta. Afterwards they must first be consumed as milk and then absorbed from the small intestine. The high rate of success with which this major change occurs is due to the close matching of the composition of the colostrum, the newborn’s first energy source, with intestinal cell permeability to large molecules. At the same time, large amounts of globulins obtained from the colostrum help to protect against prevalent pathogens while the immune system is developing.


Milk Substitute Milk Replacer Fish Protein Hydrolysate Restricted Suckling Soybean Protein Concentrate 
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Copyright information

© Elsevier Science Publishers Ltd 1990

Authors and Affiliations

  • M. Ryle
    • 1
  • E. R. Ørskov
    • 2
  1. 1.Stocksbridge, SheffieldUK
  2. 2.Applied Research DepartmentThe Rowett Research InstituteUK

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