1. ADAS UK. 2005. Pilot study to assess the effectiveness of beak blunting as an alternative to beak trimming in laying hens. Accessed Apr. 2020. http://sciencesearch.defra.gov.uk/Default.aspx?Menu=Menu&Module=More&Location=None&Completed=0&ProjectID=10926.
2. CCAC Guidelines on: The Care and Use of Farm Animals in Research, Teaching and Testing,2009
3. The effect of light intensity on the body weight, keel bone quality, tibia bone strength, and mortality of brown and white feathered egg-strain pullets reared in perchery systems;Chew;Poult. Sci.,2021
4. The effect of light intensity, strain and age on the behavior, jumping frequency and success, and welfare of egg-strain pullets reared in perchery systems;Chew;Animals,2021
5. Infrared beak treatment – a temporary solution?;Damme;Lohmann Inf,2013