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One indication of the effect of broilers' rapid growth rate on welfare is a comparison of the usual mortality rate for standard broiler chickens (1% per week) with that for slower-growing broiler chickens (0.25% per week) and with young laying hens (0.14% per week); the mortality rate of the fast-growing broilers is seven times the rate of ...
Such "day-old chicks" are sometimes sold as food for captive and falconers birds of prey. [21] The old hens also have little commercial value. Thus, the main sources of poultry meat a hundred years ago (spring chickens and stewing hens) have both been entirely supplanted by meat-type broiler chickens.
In 2008, all Cobb line birds made up around 30-40% of global broilers. [10] In 2016, the Cobb 500 alone was nearly 50%. [3] More broadly, fast-growing chickens now make up the vast majority of the global chicken supply. As of 2021, 90% of the global broiler population is part of either the Cobb or Ross lines, which are both fast-growing. [11]
An outbreak of highly pathogenic avian influenza has led to the destruction of 786,600 broiler chickens at a Tulare County ranch, marking the second poultry outbreak in about a month in the ...
There have been earlier bird flu outbreaks in the U.S., but the current one started in February 2022 and has forced the slaughter of nearly 100 million chickens and turkeys. It's commonly called ...
About 95 million chickens, turkeys, and other poultry have been killed and disposed of since February 2022, according to USDA data obtained by Reuters showing culling and disposal methods through ...
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