Document Detail


The effects of high-air velocity on broiler performance.
MedLine Citation:
PMID:  12619799     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Two trials using a total of 1,484 Ross male broilers were conducted to study the effect of air velocities of 180 and 120 m/min versus still air (<15 m/min) on BW gain (BWG) and feed:gain from 3 to 7 wk of age. Broilers were raised in a common environment to 3 wk of age. The experimental facility was a closed sided house containing eight wind tunnel floor pens and six floor pens. There were two wind tunnels (four pens/tunnel) used to test air velocities of 180 or 120 m/min. At 3 wk of age, 53 birds were placed in pens on litter in each of two wind tunnels (four pens/tunnel) or on litter in floor pens (six pens) in an environmentally controlled facility. All floor pens contained 3.75 square meters of floor space, one tube feeder, and one trough waterer. The temperature regimen was a diurnal cycle of 25-30-25 C with 23 C dewpoint. Air velocities of 180 and 120 m/min had no significant effect on BWG or feed:gain during the first week (3 to 4 wk) in the tunnels as compared with the still air. However, significant improvements were noted in BWG and feed:gains for increased air velocities from 4 to 5 and 5 to 6 wk of age. During the last week (6 to 7), an air velocity of 180 m/min significantly improved BWG and feed:gain, as compared with the 120 m/min or the still air.
Authors:
J D Simmons; B D Lott; D M Miles
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  82     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2003 Feb 
Date Detail:
Created Date:  2003-03-06     Completed Date:  2003-04-04     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  232-4     Citation Subset:  IM    
Affiliation:
USDA, Agricultural Research Service, South Central Poultry Research Laboratory, Mississippi State, Mississippi 39762, USA. jdsimmons@msa-msstate.ars.usda.gov
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MeSH Terms
Descriptor/Qualifier:
Air Movements*
Animal Nutritional Physiological Phenomena
Animals
Chickens / growth & development*
Male
Ventilation*
Weight Gain

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


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