Document Detail

Influence of storage days on the distribution for time of embryonic mortality during incubation.
MedLine Citation:
PMID:  11885888     Owner:  NLM     Status:  MEDLINE    
Breakout analysis of 11,254 chicken eggs that failed to hatch was used to assess the influence of storage days on the distribution for time of embryonic mortality during incubation and on reproductive efficiency. Eggs were collected over 30 d, stored from 2 through 18 d, and incubated in two hatches. For each storage day within hatch, proportions of embryonic mortality during each of the 21 d of incubation, among embryos that did not survive incubation, were fitted by a diphasic Weibull distribution. Multivariate analysis was used to assess the influence of hatch and storage days within hatch on parameters of the distribution and on two measures of reproductive efficiency, proportions of embryonic mortality during incubation among all eggs incubated P(mort) and among fertile eggs incubated P(mort/fert), and to obtain partial correlation coefficients. Storage days influenced the distribution for time of embryonic mortality in each hatch, but the effect was different for each hatch. As the number of storage days increased, P(mort) and P(mort/fert) increased. Partial correlations showed that P(mort) and P(mort/fert) decreased as the proportion of embryos that died during the first phase decreased and as duration of the second phase increased. The shape of the distribution for time of mortality during incubation influenced reproductive efficiency. Factors that influence the shape of this distribution, other than hatch and storage days within hatch, should be studied to increase reproductive efficiency in the poultry industry.
W W Kuurman; B A Bailey; W J Koops; M Grossman
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Poultry science     Volume:  81     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2002 Jan 
Date Detail:
Created Date:  2002-03-11     Completed Date:  2002-11-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1-8     Citation Subset:  IM    
Department of Animal Sciences, University of Illinois, Urbana 61801, USA.
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MeSH Terms
Chick Embryo / growth & development,  physiology*
Infertility / epidemiology,  veterinary*
Models, Biological
Models, Statistical
Poultry Diseases / epidemiology*
Time Factors

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

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