Consumer willingness to pay for farm animal welfare: a systematic review and meta-analysis

http://econpapers.repec.org/article/eeejfpoli/v_3a68_3ay_3a2017_3ai_3ac_3ap_3a112-127.htm

Escherichia coli in industrial poultry production – aspects of transmission and disease development.

http://ivs.ku.dk/english/research/veterinary_clinical_microbiology/preventive_veterinary_microbiology/pvmgroupmembers/?pure=en%2Fpublications%2Fescherichia-coli-in-industrial-poultry-production(01f5a899-e812-4fa5-b46d-75de4d82d130)%2Fexport.html

Infections with Gram positive cocci in broiler breeders – significance and prevalence.

https://www.researchgate.net/publication/307574875_Infections_with_Gram_positive_cocci_in_broiler_breeders_-_significance_and_prevalence

What are the costs of poultry diseases? A review of nine production diseases.

http://jukuri.luke.fi/handle/10024/538102

Enriched group housing better for sow welfare

http://www.pigprogress.net/Sows/Articles/2016/6/Enriched-group-housing-better-for-sow-welfare-2820530W/