Document Detail


Influence of reducing dietary crude protein from 17 to 13.5 percent on early lactation.
MedLine Citation:
PMID:  6833594     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A total of 117 Holstein cows were in two trials to determine how reduction in concentration of dietary protein influences early lactation. Treatments were feeding 17% crude protein for 3 mo or reducing dietary crude protein from 17 to 13.5% after 1st or 2nd mo postpartum. Results were similar in both trials. Reducing concentration of dietary crude protein to 13.5% at 1 mo postpartum tended to decrease intake of dry matter during the 2nd and 3rd mo of lactation. Milk production of multiparous, but not primiparous cows, was decreased. Dry matter intake and milk production did not decrease following a drop in concentration of dietary protein at 2 mo postpartum. Returns over feed costs were reduced by feeding the diet with 17% crude protein to primiparous cows longer than 1 mo or to multiparous cows longer than 2 mo postpartum. Milk composition, body weight change, and reproductive performance were not affected by treatment.
Authors:
R E Roffler; D L Thacker
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of dairy science     Volume:  66     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1983 Jan 
Date Detail:
Created Date:  1983-05-27     Completed Date:  1983-05-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  51-8     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animal Feed / economics
Animals
Body Weight
Cattle / physiology*
Dietary Proteins / administration & dosage*
Female
Lactation*
Milk / analysis,  secretion
Pregnancy
Reproduction
Chemical
Reg. No./Substance:
0/Dietary Proteins

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


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