SHORT COMMUNICATION
Postprandial changes in plasma growth hormone and insulin concentrations in calves before and after weaning
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Department of Animal Physiology, Graduate School of Agricultural Science, Tohoku University, Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan
 
 
Publication date: 2004-08-30
 
 
Corresponding author
K. Katoh   

Department of Animal Physiology, Graduate School of Agricultural Science, Tohoku University, Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan
 
 
J. Anim. Feed Sci. 2004;13(Suppl. 1):413-416
 
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ABSTRACT
Plasma GH and insulin concentrations following feeding as well as following stimulation with GH-releasing agonists were compared between milk-fed (3-wk old) and concentrate + hay-fed (12-wk old) calves. Feeding of a milk replacer diet, but not the concentrate + hay, significantly increased plasma GH, insulin and glucose concentrations. When calves were maintained on a milk replacer diet until 12 wk of age, postprandial plasma GH concentration was not different from that in the age-matched weaned group. It is concluded that postprandial levels in plasma GH and insulin concentrations are altered after weaning.
ISSN:1230-1388
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