Document Detail

Egg quality traits differ in hens selected for high as compared with low antibody response to sheep red blood cells.
MedLine Citation:
PMID:  23155009     Owner:  NLM     Status:  In-Data-Review    
White Leghorn chickens were selected for 36 generations for high (HAS) or low (LAS) antibody response to SRBC 5 d after an intravenous challenge. Our objective was to determine differences in egg quality resulting from that selection. In total, eggs from 45 hens from each line were assessed for shape index (SI), weight (WT, g), albumen height (AH, mm), Haugh units (HU), yolk color (YC), and eggshell weight (ESW, g) and thickness (EST, mm). Three cycles representing early, middle, and late stages of production were examined. Eggs from HAS hens had higher SI scores (4.12 ± 0.55; P < 0.001) and greater AH (0.27 ± 0.12; P < 0.001) and HU (1.89 ± 0.91; P = 0.04) than LAS hens; conversely, eggs from LAS hens had greater EST (0.03 ± 0.01 g; P < 0.001) and heavier ESW (0.66 ± 0.09 g; P < 0.001) than HAS hens. Lines were similar for WT and YC (P > 0.52). Albumen height and HU decreased (P < 0.001), whereas WT, ESW, and EST increased (P < 0.001) over cycles for both lines. However, SI decreased in LAS hens, yet increased in HAS hens, across cycles (P < 0.001). An interaction between line and cycle was observed in WT, SI, ESW, and EST (P < 0.001), but only for WT did the interaction cause re-ranking across cycles. Egg quality was, generally, superior in HAS compared with LAS hens, suggesting that higher antibody response may maintain overall fitness.
H N Albrecht; P B Siegel; F W Pierson; R M Lewis
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  91     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-11-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3025-31     Citation Subset:  IM    
Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg 24061; and.
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