Document Detail

Effect of betaine supplement on broiler performance during an experimental coccidial infection.
MedLine Citation:
PMID:  10051029     Owner:  NLM     Status:  MEDLINE    
A trial was conducted to investigate the effects of betaine as a feed supplement, given singly and in combination with the ionophore coccidiostat narasin, on broiler performance during an experimental coccidial infection. Five hundred and sixty female Ross broiler chickens were kept in floor pens and given a wheat-based diet. At 10 d of age, 420 chickens were individually inoculated with a mixture of Swedish chicken Eimeria isolates containing E. acervtulina, E. praecox, E. maxima, and E. tenella. Remaining birds were kept as uninoculated controls. The effects of betaine (0 or 1.0 g/kg) and narasin (0 or 70 ppm) added to the basal diet were evaluated. Overall, betaine as a single feed supplement improved live weight by 5.7, 5.4, and 5.6% at 22, 29, and 36 d, respectively, but had no positive effect in combination with narasin. A longer withdrawal period of the coccidiostat (10 vs 5 d) did not affect live weight, but significantly increased feed intake by 9.6% and feed conversion ratio by 12.6%, irrespective of betaine supplement. Inoculated birds had a 10% lower live weight than uninoculated chickens. Performance of uninoculated birds was similar to that of inoculated birds treated with narasin, except at 7 d after inoculation, when live weights of uninoculated birds were significantly higher. Chickens given coccidiostat had less Clostridium perfringens in their ceca, but the prevalence was not altered by betaine supplement. There was no difference in intestinal lesion scores between inoculated chickens given coccidiostat or not, despite the better performance of chickens given coccidiostat. Betaine did not affect Eimeria oocyst output or intestinal lesion scores.
L Waldenstedt; K Elwinger; P Thebo; A Uggla
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Poultry science     Volume:  78     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  1999 Feb 
Date Detail:
Created Date:  1999-04-28     Completed Date:  1999-04-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  182-9     Citation Subset:  IM    
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Uppsala.
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MeSH Terms
Animal Feed
Betaine / pharmacology*
Body Weight
Chickens / growth & development,  parasitology*,  physiology
Coccidiosis / veterinary*
Eimeria / pathogenicity
Gastrointestinal Agents / administration & dosage,  pharmacology*
Parasite Egg Count
Reg. No./Substance:
0/Gastrointestinal Agents; 107-43-7/Betaine

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

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