| Selecting for efficiency of egg production using food-consumption records in layer-type chickens. | |
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MedLine Citation:
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PMID: 2049633 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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1. The purpose of the experiment was to evaluate the use of food consumption records in selection to improve layer-type chickens. 2. Twelve subpopulations of Leghorns, including 5878 tested birds, were used in a selection experiment which lasted 5 generations. Four were selected using an index (I1) that combined information on body weight (BW), egg-mass output (EM), and individual food-consumption records (FC). Four were selected using an index (I2) that combined information just on BW and EM. The remaining 4 served as controls, with selection differentials set to zero in each generation. 3. Differences between the selected groups, control-corrected each generation, measured the "food-record effect". 4. Including food-consumption records in the selection criterion resulted in increased body weight (7%), reduction in food consumption (6 to 9%), increase in food efficiency (egg mass/food consumption) (2 to 5%), and increase in income over food costs (10%), relative to selection not involving food records. |
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Authors:
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A W Nordskog; Y H Hou; H Singh; S Cheng |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: British poultry science Volume: 32 ISSN: 0007-1668 ISO Abbreviation: Br. Poult. Sci. Publication Date: 1991 Mar |
Date Detail:
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Created Date: 1991-07-22 Completed Date: 1991-07-22 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 15740290R Medline TA: Br Poult Sci Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 87-101 Citation Subset: IM |
Affiliation:
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Department of Animal Science, Iowa State University, Ames 50011. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Breeding* Chickens / genetics, physiology* Eating / genetics* Female Models, Genetic Oviposition / genetics* Regression Analysis Weight Gain / genetics |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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