It would have to be the Holstein.
A Guernsey is a breed of cattle, particularly dairy cattle.
No. Gerts are a beef breed, not a dairy breed.
Most of the cattle in NZ are Dairy cows, and Frisian is the most popular breed because of its good production quantity. (As measured by Milk Solids.) Jersey cows used to be the common dairy cows, but no longer. For Beef cattle, Angus would be among the most popular. Hereford are another popular beef breed.
This breed is a dairy cattle. The standard colour is black with white markings. They are popular for their large amount of milk production. The fat percentage is about 3.5%. The Holstein-Friesian is the most popular dairy cow in Australia.
Ayrshire is a popular breed of dairy cow. It has brown and white colouring.
Angus cattle are the most common of the beef breeds and Holstein cattle are the most common of the diary breeds.
Jersey
Dual purpose means that the breed or type of cattle can be used for milking or raising beef cattle.
Milking Shorthorn's.
Guernsey
Jersey.
Limousin cattle are a beef breed, not a dairy breed of cattle. So in other words, no not really. They have a milking ability that is matched to that of Angus, which is not nearly as good as Holstein or Jersey.