Document Detail

Growth curve changes associated with long-term selection for body weight in Japanese quail.
MedLine Citation:
PMID:  680578     Owner:  NLM     Status:  MEDLINE    
Four quail lines were utilized to investigate growth patterns in quail. Three of these lines (P, T and S) had previously undergone long-term selection for high 4-week body weight, while line C was maintained as a nonselected control. Quail progeny from generation 37 and 38 breeders were fed diets containing 28% and 20% protein. Within each trial, the diet/line treatments were replicated 3 times with 12 quail per subclass. Body weight measurements suggested that the growth of all lines was best approximated by the logistic growth curve model. When fed a 28% protein diet the age at maximum growth (point of inflection) of selected lines was 4 to 6 days earlier than the corresponding age of controls. Similar rates of gain after 4 weeks of age between selected and control lines suggested that mechanisms influenced by selection for 4-week body weight in quail operate only during the period prior to the age at selection with little or no residual effect.
H L Marks
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Growth     Volume:  42     ISSN:  0017-4793     ISO Abbreviation:  Growth     Publication Date:  1978 Jun 
Date Detail:
Created Date:  1978-10-25     Completed Date:  1978-10-25     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0205044     Medline TA:  Growth     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  129-40     Citation Subset:  IM    
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MeSH Terms
Analysis of Variance
Animal Feed
Body Weight
Coturnix / growth & development*
Dietary Proteins
Quail / growth & development*
Selection, Genetic
Sex Factors
Species Specificity
Reg. No./Substance:
0/Dietary Proteins

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