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Of the 9 million dairy cows in the U.S., approximately 90% of them are of the Holstein descent. [66] The top breed of dairy cow within Canada's national herd category is Holstein, taking up 93% of the dairy cow population, have a production rate of 10,257 kilograms (22,613 lb) of milk per cow that contains 3.9% butter fat and 3.2% protein [8]
The cows teat is a projection of the mammary gland that is sealed during their dry period. A dry cow refers to a dairy cow that is in a stage of their lactation cycle where milk production ceases prior to calving. This part of their lactation cycle is referred to as the cows dry period and typically last between 40 and 65 days. [1]
Dairy cows need to produce one calf each year in order to remain in milk production. Heifer (female) calves will nearly always become a replacement dairy cow. Some dairy heifers grow up to be mothers of beef cattle. Male dairy calves are generally reared for beef or veal; relatively few are kept for use as breeding stock.
Cattle bred specifically for milk production are called milking or dairy cattle; [1] a cow kept to provide milk for one family may be called a family cow or a milker. 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 ...
Dairy cattle are those primarily raised for their milk as part of dairy farming. Breed Country of origin Average milk output per day [Note 1] Other Volume
Concentrated calving and uniform weaning saves time and is cheaper than having individual cows in heat throughout the year. [7] However, there are also disadvantages with estrous synchronisation. It requires a high level of management and skills to be able to manage numerous calving operations at a synchronised time. [7]
Cow gestation can last an average of 283 days — slightly longer than humans. There are some factors that can change this time frame, like breed or the sex of the calf.
List of animal names, for animals whose young are called "calves" Crus, the entire lower leg; Calve (disambiguation) Calving (disambiguation) Calf Island (disambiguation) Golden calf, idol described in the Bible; Cow–calf, a set of switcher-type locomotives; Calf, a small island near a larger one; see Category:Calves (islands)