Document Detail

Effect of dietary zinc level on serum carotenoid levels, body and shank pigmentation of chickens after experimental infection with coccidia.
MedLine Citation:
PMID:  16736856     Owner:  NLM     Status:  MEDLINE    
Two experiments were conducted to test the effects of a dietary zinc amino acid complex (Zn-AA) and an anticoccidial drug on Eimeria acervulina or Eimeria tenella infections. In each experiment, 288 day-old Three-Yellow-Chickens were used in a 2 x 3 factorial experimental design. Six groups were arranged randomly to receive three levels of Zn-AA (0, 40, or 80 mg/kg) alone or with salinomycin (60 mg/kg). Additionally an uninfected group was set as negative control. At the age of 21 days birds in Exp. 1 were inoculated with 3 x 10(4) sporulated E. acervulina oocysts, while birds in Exp. 2 were inoculated with 1.5 x 10(4) sporulated E. tenella oocysts. In Exp. 1, E. acervulina did not suppress growth performance significantly, but in groups without salinomycin it significantly reduced serum carotenoid levels on day 7 after inoculation and body and shank pigmentation on day 42. Salinomycin medication maintained serum carotenoids and visual colour of inoculated birds, but Zn-AA did not influence these parameters. In Exp. 2, growth performances of infected and uninfected chickens were similar. Infection decreased to only serum carotenoid levels on day 14 after infection, and colour scores on day 42 in the inoculated group without salinomycin and Zn-AA supplementation. The birds that received Zn-AA had significantly higher serum carotenoid levels and colour scores than those that did not. Although supplementation of Zn-AA cannot avoid coccidial damage of caecum, it prevents the reduction of serum carotenoids and pigmentation of Three-Yellow-Chicken infected with E. tenella, but not after infection with E. avervulina. The interactive effects between Zn-AA and salinomycin on growth performance and pigmentation were not significant.
Jian Zhao; Yuming Guo; Xun Suo; Jianmin Yuan
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of animal nutrition     Volume:  60     ISSN:  1745-039X     ISO Abbreviation:  -     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-06-01     Completed Date:  2006-06-15     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  101222433     Medline TA:  Arch Anim Nutr     Country:  England    
Other Details:
Languages:  eng     Pagination:  218-28     Citation Subset:  IM    
College of Animal Science and Technology, China Agricultural University, Beijing, PR China.
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MeSH Terms
Amino Acids / administration & dosage,  pharmacology
Animal Feed
Animal Nutritional Physiological Phenomena
Carotenoids / analysis,  blood*
Cecum / parasitology,  pathology
Chickens* / blood,  growth & development,  parasitology
Chromatography, High Pressure Liquid / veterinary
Coccidiosis / blood,  drug therapy,  physiopathology,  veterinary*
Coccidiostats / adverse effects*,  therapeutic use
Dietary Supplements
Dose-Response Relationship, Drug
Drug Interactions
Eimeria* / pathogenicity
Eimeria tenella / pathogenicity
Poultry Diseases / blood*,  drug therapy,  physiopathology
Pyrans / adverse effects,  therapeutic use
Random Allocation
Skin Pigmentation / drug effects
Zinc / administration & dosage*,  pharmacology
Reg. No./Substance:
0/Amino Acids; 0/Coccidiostats; 0/Pyrans; 36-88-4/Carotenoids; 53003-10-4/salinomycin; 7440-66-6/Zinc

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

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