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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]
[2]: 142 A breed society, the Brown Swiss Cattle Breeders' Association, was formed in 1880; the first herd-book dates from 1889. By the end of the century breeding was directed towards dairy qualities; a production register for cows was opened in 1911. [2]: 142 From about 1940 the breed became more diffused across the United States.
Use of milk production hormone, recombinant bST: A study in February 1999 determined the "response to bST over a 305-day lactation equaled 894 kg of milk, 27 kg of fat, and 31 kg of protein". [19] Monsanto Company estimates a figure of about 1.5 million of 9 million dairy cows are being treated with rBST, or about 17% of cows nationally. [20]
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 any cow. The average in the UK is around 22 litres per day. [102] [103] Dairy is a large industry worldwide. In 2023, the 27 European Union countries produced 143 million tons ...
Texas officials reported on Monday that a farm worker tested positive for H5N1, or bird flu, that has spread to dairy cows in Texas, Kansas, New Mexico, Michigan and Idaho - the first time the ...
A dozen more dairy herds in California have been stricken with bird flu as the virus continues to infect animals and humans around the U.S.. Nearly 700 herds in the state — or 71 percent of all ...
The Burlina is a breed of cattle from the mountainous areas of the Veneto region of north-east Italy. [ 4 ] : 144 It is distributed mainly in the provinces of Treviso , Verona and Vicenza . [ 5 ] : 12 It is a dual-purpose breed, but is raised principally for milk production.
The money is also intended to encourage testing of both dairy cows and the people who work closely with them — a key step, experts said, in understanding the true scope of bird flu, also known ...