Document Detail


The effect of body temperature on the growth rate of broilers.
MedLine Citation:
PMID:  6667389     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of body temperature (Tb) on the growth rate of male broilers was studied. Two pens (5 m2 each), one (A) near air inlets and one (B) near air outlets, were erected in a 12.5 m wide cross-ventilated, environmentally-controlled poultry house. Of 100 birds of both sexes in each pen, 18 males were marked and weighed weekly, and in three of these in each pen body temperature was measured by telemetry over 24 h at 50, 54, 55, 58, and 62 d of age. At 62 d group B birds weighed 250 g less than A; implanted birds weighed less than their group means, but relative growth rates were similar. Mean lowest (08.00 to 09.00 h) and highest Tb (11.00 to 17.00 h) in group A were 41.35 degrees C and 42.13 degrees C, and in group B 41.48 degrees C and 42.86 degrees C, respectively. The regression of G (percentage gain in body weight/d) on noon maximum Tb (Tbn) was G = 46.25 - 1.024 Tbn. This study suggests that an air temperature above 32 degrees C depresses body-weight gain of broilers by about 10% between 5 and 9 weeks of age. Therefore, house temperature should not be allowed to increase above 28 degrees C, except if relative humidity also increases to 0.70 or more.
Authors:
A Meltzer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  British poultry science     Volume:  24     ISSN:  0007-1668     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  1983 Oct 
Date Detail:
Created Date:  1984-03-27     Completed Date:  1984-03-27     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  489-95     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Body Temperature*
Body Weight
Chickens / growth & development*,  physiology
Female
Humidity
Male
Telemetry / veterinary
Temperature

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


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