Document Detail

The effect of body temperature on the growth rate of broilers.
MedLine Citation:
PMID:  6667389     Owner:  NLM     Status:  MEDLINE    
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.
A Meltzer
Related Documents :
3453289 - Body composition in the elderly estimated with an electrical impedance method.
17451529 - Morphometrics and inertial properties in the body segments of chimpanzees (pan troglody...
19897779 - The adult body: how age, gender, and body mass index are related to body image.
10223429 - Low body mass indices in adolescents with obsessive-compulsive disorder.
3427499 - A new burn area assessment chart.
7556359 - Aging and body composition: biological changes and methodological issues.
2380279 - Children's deictic and nondeictic interpretations of the spatial locatives in front of ...
22445529 - Morphological study of lingula of the mandibles in south indian population.
9531959 - Lipofuscin: mechanisms of formation and increase with age.
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    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Body Temperature*
Body Weight
Chickens / growth & development*,  physiology
Telemetry / veterinary

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

Previous Document:  Thermoneutral zone and resting metabolic rate of broilers.
Next Document:  Genetic-economic evaluation of traits in a broiler enterprise: the relative genetic-economic values.