Источники:

1. https://www.thedairysite.com/knowledge-centre/breeds
2. https://www.holsteinusa.com/holstein_breed/breedhistory.html
3. https://www.royaljersey.co.uk/
4. https://www.ayrshire.ru/today
5. http://en.zar.at/Cattle_breeding_in_Austria/Cattle_breeds/Fleckvieh.html
6. https://www.fleckvieh.at/zucht/fleckvieh/
7. https://www.montbeliarde.org/home.html
8. https://dutchbelted.com/about-the-breed
9. https://www.roysfarm.com/cattle/
10. https://www.brownswissusa.com/Breed/BrownSwissBreed/tabid/173/Default.aspx
11. https://www.rbst.org.uk/northern-dairy-shorthorn2
12. https://domesticanimalbreeds.com/category/cattle/
13. https://www.norwegianred.com/Start/Norwegian-Red/about-norwegian-red/Norwegian-Red-characteristics/
14. https://breeds.okstate.edu/cattle/
15. https://www.farmow.com/cattle
16. https://www.irishmoiledcattlesociety.com/the-breed/
17. https://www.milkingdevons.org/breed.html
18. https://www.normandeassociation.com/what-is-a-normande
19. https://brahman.org/about/
20. https://www.beefshorthorn.org/the-functional-suckler-cow
21. http://www.gallowaycattlesociety.co.uk/why-galloways.asp
22. http://barzona.com/about.html
23. https://americanbeefaloassociation.com/benefits
24. https://www.britishwhitecattle.co.uk/breed-standard
25. https://www.bazadaise.org.uk/thebazadaisebreed.html
26. https://www.texaslonghorn.com/buelingo_info/index.cfm?con=history
27. https://www.devoncattle.com/devons/