Document Detail


Divergent selection for growth in Japanese quail under split and complete nutritional environments. 7. Heterosis and combining ability among diallel crosses following twenty-seven generations of selection.
MedLine Citation:
PMID:  8378218     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Growth patterns of quail lines divergently selected for 4-wk BW under split and complete nutrition environments were investigated utilizing a diallel mating scheme. The design, involving 16 mating combinations, allowed investigation of heterotic effects, reciprocal cross effects, and combining ability. Progeny from Generation 27 breeders were evaluated in two hatches under both selection diets. Heterosis for hatch weight was essentially zero; however, percentage heterosis from High x High crosses and Low x Low crosses ranged from 5 to 18% after 1 wk of age. Quail progeny from Low x High crosses were consistently larger than quail from reciprocal High x Low crosses under both selection diets. Reciprocal differences were greatest immediately posthatch and declined with age. However, in crosses involving males from High and Low split diet lines mated to females from High and Low complete diet lines, large reciprocal differences in BW remained at 8 wk. Mean heterosis values for BW across ages from crossing High and Low lines both within and across selection environments were negative in six of eight comparisons. Mean values ranged from +3 to -11% and indicated that greater selection responses may have been made in divergent selection for low 4-wk BW than for high BW. General combining ability of lines was greater when transmitted via females as opposed to males, and was similar under the two diets (split and complete). There was evidence that high-BW lines exhibited greater general combining ability under both dietary environments than did low-BW lines.
Authors:
D H Baik; H L Marks
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  72     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  1993 Aug 
Date Detail:
Created Date:  1993-10-15     Completed Date:  1993-10-15     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1449-58     Citation Subset:  IM    
Affiliation:
USDA, Agricultural Research Service, Southeast Poultry Research Laboratory, University of Georgia, Athens 30602-2772.
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MeSH Terms
Descriptor/Qualifier:
Animal Nutritional Physiological Phenomena
Animals
Body Weight / genetics*
Coturnix / genetics*,  growth & development*
Crosses, Genetic*
Female
Hybrid Vigor*
Male

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


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