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Cows produce milk until three weeks before birth. [103] Over the last fifty years, dairy farming has become more intensive to increase the yield of milk produced by each cow. The Holstein-Friesian is the breed of dairy cow most common in the UK, Europe and the United States. It has been bred selectively to produce the highest yields of milk of ...
The name "Bovidae" was given by the British zoologist John Edward Gray in 1821. [1] The word "Bovidae" is the combination of the prefix bov- (originating from Latin bos , "ox", through Late Latin bovinus ) and the suffix -idae .
Bos (from Latin bōs: cow, ox, bull) is a genus of bovines, which includes, among others, wild and domestic cattle.. Bos is often divided into four subgenera: Bos, Bibos, Novibos, and Poephagus, but including these last three divisions within the genus Bos without including Bison is believed to be paraphyletic by many workers on the classification of the genus since the 1980s.
A fresh cow is a dairy term for a cow (or a first-calf heifer in few regions) who has recently given birth, or "freshened." The adjective applying to cattle in general is usually bovine. The terms bull, cow and calf are also used by extension to denote the sex or age of other large animals, including whales, hippopotamus, camels, elk and elephants.
Breeds of Cattle – Cow World (archived 19 January 2017) Cattle Breeds – Embryoplus.com (archived 29 November 2013) Breeds of Cattle – Official 2nd Edition; Cattle Breeds of the World; Portuguese Cattle Breeds (archived 17 January 2016) EuReCa – Towards self-sustainable EUropean, REgional CAttle breeds; Native cow varieties of India
International Commission on Zoological Nomenclature (2003) Opinion 2027 (Case 3010). Usage of 17 specific names based on wild species which are pre-dated by or contemporary with those based on domestic animals (Lepidoptera, Osteichthyes, Mammalia): conserved. Bull. Zool. Nomencl., 60:81–84.
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Feeding behaviors are important for the dairy cow, as feeding is how the cow ingests dry matter. However, the cow must ruminate to fully digest the feed and utilize the nutrients in the feed. [34] Dairy cows with good rumen health are likely to be more profitable than cows with poor rumen health—as a healthy rumen aids in digestion of nutrients.