Document Detail

Effect of environmental temperature and dietary fat on growth and physiological responses of newborn calves.
MedLine Citation:
PMID:  3624595     Owner:  NLM     Status:  MEDLINE    
Effects of cold environmental temperature and supplemental dietary fat (energy) on growth rate and physiological responses of young dairy calves fed a milk replacer diet were studied. Thirty-six Holstein bull calves were randomly assigned to one of six treatments allotted in a 2(-4 degrees C or 10 degrees C) X 3(10, 17.5, or 25% dietary fat) factorial arrangement of treatments Calves began the experiment at an average of 6 d of age and received .6 kg dry milk replacer in 4 L of water daily for 3 wk. Average daily gains (kg/d) over the 3-wk trial for calves fed 10, 17.5, and 25% fat diets were-.04, .02, and .09 at -4 degrees C and .15, .22, and .20 at 10 degrees C. Gains were significantly lower for calves housed at -4 degrees C. Rectal temperatures were lower for calves at -4 degrees C than at 10 degrees C and for calves fed 10% versus 25% fat diet. Respiratory rates and water intakes were lower for calves housed at -4 degrees C but were not affected by diet. Concentrations of plasma glucose and prolactin were lower for calves housed at -4 degrees C while concentrations of plasma free fatty acids and growth hormone were not affected by temperature. Plasma free fatty acids were increased by dietary fat, and plasma growth hormone was reduced as dietary fat increased. Calves housed at -4 degrees C had higher maintenance energy requirements (.133 Mcal metabolizable energy/kg.75) than calves housed at 10 degrees C (.101 Mcal metabolizable energy/kg.75).(ABSTRACT TRUNCATED AT 250 WORDS)
L S Scibilia; L D Muller; R S Kensinger; T F Sweeney; P R Shellenberger
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of dairy science     Volume:  70     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1987 Jul 
Date Detail:
Created Date:  1987-09-29     Completed Date:  1987-09-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1426-33     Citation Subset:  IM    
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MeSH Terms
Animals, Newborn / growth & development*
Cattle / growth & development*
Cold Temperature*
Dietary Fats / pharmacology*
Energy Metabolism*
Reg. No./Substance:
0/Dietary Fats

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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