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Article

Analysis of the source of aggressiveness in gamecocks.

Scientific reports - 24 Apr 2020

Komiyama Tomoyoshi, Yoshikawa Masanobu, Yokoyama Keiko, Kobayashi Hiroyuki

Abstract excerpt

Although the fighting behaviour in gamecocks has evolved because of artificial selection, it is unknown whether the selection for aggressiveness affects neurotransmitter levels in the avian central nervous system. We sought to identify the source and origin of this trait. We collected the brain samples from 6 female Shamo gamecocks and 5 Shaver Brown chickens (control; bred for egg production). The midbrain...

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PMID: 32332854
DOI: 10.1038/s41598-020-63961-1
PMCID: PMC7181795

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