Document Detail

Utilization of soybean oil and tallow in young turkeys compared with young chickens.
MedLine Citation:
PMID:  11020079     Owner:  NLM     Status:  MEDLINE    
The experiment was conducted to determine the apparent metabolizable energy and apparent fatty acid digestibility of tallow and soybean oil (8% of the basal diet) in young (1 and 3 wk of age) turkeys compared with young chickens. At 1 wk of age, turkeys used fats, particularly saturated fats, more efficiently than young chickens (i.e., total fatty acid digestibility was 96.5 vs. 86.4% for soybean oil and 75.0 vs. 49.1% for tallow). This difference between the two species disappeared at 3 wk of age, when there was an increase (95.7 vs. 99.3% for soybean oil and 64.0 vs. 69.7% for tallow) in fat utilization in young chickens, whereas in turkeys it remained constant (96.5 vs. 99.3% for soybean oil and 75 vs. 69.3% for tallow). This result suggests a greater and earlier maturity of the digestive system for fat utilization in turkeys than in young chickens. This efficient utilization of saturated fatty acids in turkeys seemed to depend more on the fat origin than on bird age, because it remained constant with age (91.4 vs. 96%) when saturated fatty acids were provided by soybean oil, and decreased (particularly for C18:0: 5.08 vs. 35.8%) when saturated fatty acids were provided by tallow. In turkeys, fluctuations in secretion of bile salts or in lipase activity during the trial period may have caused the lower stearic acid digestibility at 3 wk of age. The present study revealed a difference in fat utilization between turkeys and young chickens. For higher validity of the digestibility of fats, it would be preferable to use turkeys to derive metabolizable energy and fatty acid digestibility of fat values in formulating turkey diets.
A Mossab; J M Hallouis; M Lessire
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  79     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2000 Sep 
Date Detail:
Created Date:  2001-01-03     Completed Date:  2001-01-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1326-31     Citation Subset:  IM    
Institut National de la Recherche Agronomique, Centre de Tours, Station de Recherches Avicoles 37380, Nouzilly, France.
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MeSH Terms
Bile Acids and Salts / secretion
Chickens / growth & development*
Dietary Fats / administration & dosage*,  metabolism
Dietary Fats, Unsaturated / administration & dosage
Energy Metabolism
Fats* / metabolism
Fatty Acids / metabolism
Lipase / metabolism
Soybean Oil* / metabolism
Species Specificity
Stearic Acids / metabolism
Turkeys / growth & development*
Reg. No./Substance:
0/Bile Acids and Salts; 0/Dietary Fats; 0/Dietary Fats, Unsaturated; 0/Fats; 0/Fatty Acids; 0/Stearic Acids; 57-11-4/stearic acid; 61789-97-7/tallow; 8001-22-7/Soybean Oil; EC

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

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