Related Experiment Video
Updated: May 31, 2025

Evaluation of Auditory Brainstem Response in Chicken Hatchlings
Published on: April 1, 2022
Domesticated chickens interact more with humans and are more explorative than Red Junglefowl
1Department of Animal Science, University of California, Davis, Davis, CA, United States.
Abstract:
Domesticated species are adapted to thrive in an environment with regular human interaction, and these interactions influence the development of a human-animal relationship. Chickens are the most abundant domesticated species, but their relationship with humans is poorly understood. A more comprehensive analysis of this relationship would provide valuable insight into their welfare needs. The present study compares the behavior of a domesticated and a non-domesticated breed of Gallus gallus in the presence of a familiar human. The domesticated breed was more active overall, and displayed more human contact-seeking behavior. These behavioral differences contribute to our understanding of the human-chicken relationship and could be helpful new insights for improving welfare of chickens in agricultural practice.
Related Concept Videos
Complementation Tests
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
Mate Choice
Background and Environment Affect Phenotype
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
Testing a Claim about Mean: Unknown Population SD
Estimating a population mean requires the samples to be approximately normally distributed. The data should be collected from the randomly selected samples having no sampling bias. There is no specific requirement for sample size. But if the sample size is less than 30, and we don't know the population standard deviation, a different approach is used;...
Incomplete Dominance
Types of Selection

