Understanding Broiler Gait Kinematics
By Victoria Kouritzin
Through genetic selection, the modern day broiler has undergone improvements in appetite, its ability to efficiently gain weight, and in its survivability. However, the resulting rapid growth in commercial broiler strains may also
Dr. Bench’s research program specializes in fine movements in an animal’s behaviour which cannot be detected without the aid of a digital medium. Her goal is to develop more objective and automated ways of evaluating animal behaviour and welfare states using technology platforms like 3D kinematics and infrared thermography. These sensitive technologies enable more precise measurements compared with current visual-based methods, allowing researchers to better understand the biomechanics of an animal’s movements and to better evaluate welfare phenotypes.
Currently, this broiler gait assessment research is in its
In order to build the model, broilers were taught to walk down a runway wearing reflective markers attached to important skeletal landmarks and joints associated with the legs, hips and back. Then, special kinematic cameras were used to digitally record the movements of each reflective marker as part of a 3D model of the broiler skeleton. Each model is built using several different time points in order to capture gait changes throughout broiler development.
In an upcoming trial, the gait of different strains of broilers will be recorded and assessed using the new kinematic method developed by Dr. Bench’s research group. In collaboration with the University of Alberta’s Dr. Graham Plastow (CEO for Livestock Gentec), gait types identified will then be compared to genomic test results in order to determine whether specific genomic markers are responsible for variations in gait phenotypes.
This research is funded by Alberta Agriculture and Forestry’s Strategic Research and Development Grant Program.