Document Detail

The nutritional value of rat diets of differing energy and protein levels when subjected to physical processing.
MedLine Citation:
PMID:  4068659     Owner:  NLM     Status:  MEDLINE    
4 diets formulated to contain 8.5, 10.0, 11.5 and 12.5 MJ/kg metabolizable energy and 85, 133, 192 and 250 g/kg of protein respectively were prepared in 3 physical forms: meal, reground pellets or reground expanded and fed to growing rats from 28 to 56 days of age. Food intake was increased by pelleting and expanding in lower energy diets, whereas these differences tended to disappear in the higher energy diets. Growth and food conversion efficiencies showed a similar pattern, with the greatest differences evident in the low energy diets. Male rats showed greater differences than females in all parameters measured. Expanding the diet improved the microbiological status over pelleting both being superior to unprocessed meal. Measurements of digestible and metabolizable energy values of the 8.5 and 12.5 MJ/kg diets revealed consistent decreases in energy availability following processing. This suggested that the observed growth responses were due mainly to increased food intake coupled with increased nitrogen retention.
J Dean; D G Edwards
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Laboratory animals     Volume:  19     ISSN:  0023-6772     ISO Abbreviation:  Lab. Anim.     Publication Date:  1985 Oct 
Date Detail:
Created Date:  1986-01-21     Completed Date:  1986-01-21     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0112725     Medline TA:  Lab Anim     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  311-9     Citation Subset:  IM    
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MeSH Terms
Animal Feed*
Animal Nutritional Physiological Phenomena
Dietary Proteins / metabolism*
Energy Metabolism*
Food Handling*
Rats / metabolism*
Rats, Inbred Strains / metabolism
Reg. No./Substance:
0/Dietary Proteins

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

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