Document Detail

Effect of vitamin and trace mineral withdrawal from finisher diets on growth performance and immunocompetence of broiler chickens.
MedLine Citation:
PMID:  16641026     Owner:  NLM     Status:  MEDLINE    
The present study was carried out to examine the effect of vitamin (V) or trace mineral (TM) mix removal from finisher diet (42-56 d of age) on performance and immunocompetence of broilers. The dietary treatments were: (1) the basal diet with no supplemental V or TM; (2) the basal diet fortified with V mix only; (3) the basal diet fortified with TM mix only; and (4) the basal diet fortified with V and TM mix. At 47 d, four birds from each replicate (20/treatment) were injected with Newcastle disease (ND) antigen and blood samples were collected just before and 9 d after immunisation. The results showed that V and TM mix withdrawal from finisher diet did not impair either weight gain or feed conversion efficiency from d 42 to 56. Feed intake was significantly increased when both mixes were omitted from the diet. Dietary treatments had no effect on carcase yield or proportion of breast and thigh meat and abdominal fat deposition. Packed cell volume (PCV) significantly decreased as a consequence of removal of V, TM and V+TM. Neither heterophil:lymphocyte ratio (H:L ratio), haemagglutination inhibition (HI) nor total antibody titre measured by ELISA were influenced by removal of V or TM supplements. In conclusion, the results from this study suggest that 14-d withdrawal of V or TM mix did not influence the immunocompetence of broilers.
F Khajali; E Asadi Khoshoei; A K Zamani Moghaddam
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British poultry science     Volume:  47     ISSN:  0007-1668     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-04-27     Completed Date:  2006-07-03     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  159-62     Citation Subset:  IM    
Department of Animal Science, Shahrekord University, Shahrekord 88186-34141, Iran.
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MeSH Terms
Animal Feed
Animal Nutritional Physiological Phenomena
Antibody Formation / drug effects,  physiology
Chickens / growth & development*,  immunology*
Disease Susceptibility / veterinary
Dose-Response Relationship, Drug
Food, Fortified
Hemagglutination Inhibition Tests / veterinary
Hematocrit / veterinary
Immunocompetence / drug effects*
Lymphocytes / blood,  drug effects
Minerals / administration & dosage*
Newcastle Disease / epidemiology
Newcastle disease virus / pathogenicity
Poultry Diseases / epidemiology
Random Allocation
Trace Elements
Vitamins / administration & dosage*
Weight Gain / drug effects
Reg. No./Substance:
0/Minerals; 0/Trace Elements; 0/Vitamins

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

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