1. Amos, N., Sullivan, R., Williams, N.R., 2020. The Business Benchmark on Farm Animal Welfare Report 2020. https://www.bbfaw.com/media/1942/bbfaw-report-2020.pdf. Accessed on 05 August 2021.
2. Evaluation of minimum animal welfare conditions in national standards and farm certification schemes for pig fattening;Annen;Acta Agric Scand Sect - Animal Sci,2011
3. Animal Welfare in Public and Private Standards and On-Farm Compliance;Annen;Ger J Agric Econ,2013
4. AssureWel, undated (a). Advancing Animal Welfare Assurance. http://www.assurewel.org/AboutAssureWel-2.html. Accessed on 05 August 2021.
5. AssureWel, undated (b). Dairy Cows. http://www.assurewel.org/dairycows.html. Accessed on 05 August 2021.