1. Alexopoulos A, Tzatzimakis G, Bezirtzoglou E, Plessas S, Stavropoulou E, Sinapis E, Abas Z. 2011. Microbiological quality and related factors of sheep milk produced in farms of NE Greece. Anaerobe 17 (2011) 276-279.
2. BAMN, 2001. An introduction to infectious disease control on dairy farms (biosecurity) & biosecurity on dairies. Bovine Alliance on Management and Nutrition (BAMN). Biosecurity on Dairies.
3. Bojesen AM, Nielsen SS, Bisgaard M. 2010. Prevalence and transmission of haemolytic Gallibacterium species in chicken production systems with different biosecurity levels. Avian Pathol. 32:503–510
4. Caroprese M. 2008. Sheep housing and welfare. Small Ruminant Research.Volume 76, Issues 1–2, April 2008, p. 21-25.
5. CRWL, 2000. Code of Recommendations for the Welfare of Livestock; Sheep. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/69365/pb5162-sheep-041028.pdf Accessed July 2019.