Document Detail

Influence of source and ratio of xanthophyll pigments on broiler chicken pigmentation and performance.
MedLine Citation:
PMID:  11261563     Owner:  NLM     Status:  MEDLINE    
One experiment was conducted using 960 1-d-old, sexed broilers of Ross 308 strain from 1 to 43 d to evaluate if one type of chemically isomerized marigold with 25% of xanthophylls as zeaxanthin (SME-25) could produce pigmentation equivalent to the current addition of conventional marigold with 10% of xanthophylls as zeaxanthin (SME-10) plus canthaxanthin (CTX) in practical broiler diets (maize-wheat-soybean). Birds were allocated in 32 pens, in a randomized complete block design (four blocks x four treatments). The treatments consisted of a nonpigmented control (T1), a combination of 35 ppm of yellow xanthophylls (YX) from SME-10 + 5 ppm of CTX (T2), a combination of 32 ppm of YX from SME-10 + 2 ppm of CTX (T4), and one treatment with 40 ppm of YX from a new SME-25 (T3). There were no significant treatment effects on chicken performance. All color parameters (Minolta coordinates, Roche color fan scores, Rank test) presented significant differences (P < 0.0001) because of dietary pigments on shanks and breast skin. Birds fed the SME-25 diet had less pigmentation than those fed equivalent quantities of a combination of SME-10 + CTX. The Minolta coordinate "b" measured in breast skin was a good indicator of YX content in feed, whereas the "a" coordinate measured on the shank showed a linear relationship with the dietary CTX level (r = 0.61, P < 0.0001). The same visual color classification of chickens was achieved irrespective of the rank test performed (by shank or carcass color). Lutein and zeaxanthin from the SME-25 product had lower deposition rates in skin and fat tissues than those from the SME-10 product. This finding seems to be related to the ratio of zeaxanthin stereoisomer RR (optically active) vs. RS that was found in tissues from the SME-10 product (97.8%:2.2%), whereas with SME-25 this ratio was 16.0:84.0%. These results suggest that inclusion of only the SME-25 product could not replace the current addition of SME-10 and CTX combinations.
A M Pérez-Vendrell; J M Hernández; L Llauradó; J Schierle; J Brufau
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Poultry science     Volume:  80     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2001 Mar 
Date Detail:
Created Date:  2001-03-22     Completed Date:  2001-10-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  320-6     Citation Subset:  IM    
Institut de Recerca i Tecnologia Agroalimentàries, Department of Animal Nutrition, Centre de Mas Bové, Reus, Spain.
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MeSH Terms
Animal Feed
Canthaxanthin / pharmacology*
Chickens / physiology*
Lutein / pharmacology*
Pigmentation / drug effects*
Random Allocation
beta Carotene / analogs & derivatives,  pharmacology*
Reg. No./Substance:
0/Xanthophylls; 127-40-2/Lutein; 144-68-3/zeaxanthin; 514-78-3/Canthaxanthin; 7235-40-7/beta Carotene

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

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