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The aim of this work was to study fear responses and their relation to production traits in red junglefowl (Gallus gallus spp.), White Leghorn (Gallus domesticus), and their F2-progeny. Quantitative trait locus (QTL) analyses were performed for behavioral traits to gain information about possible genetic links between fear-related behaviors and production. Four behavioral tests were performed that...
Behaviors with high energetic costs may decrease in frequency in domestic animals as a response to selection for increased production. The aim of this study was to quantify production traits, foraging behavior, and social motivation in F2 progeny from a White Leghorn × red junglefowl intercross (n = 751–1046) and to perform QTL analyses on the behavioral traits. A foraging-social maze was used for...
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