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Cobb 500
The Cobb 500 is a fast-growing Broiler, broiler chicken breed. They can reach a 2 kg slaughter weight at 33 days old. They make up around half of all globally farmed chickens as of 2016. The Cobb 500 is controversial due to their health problems. Animal rights and animal welfare groups such as Open Cages have called for the industry to stop their use. History The Cobb linage descends from the Vantress chicken, which was bred for the USDA's Chicken of Tomorrow Contest, Chicken of Tomorrow contest in the 1940s. The Cobb line itself saw its initial development in the 1970s in England by Cobb-Vantress. The Cobb 500 in particular was introduced into the United States in 1985. In response, the US producer Tyson Foods acquired a 50% stake in Cobb-Vantress in 1986. In 1994, Tyson acquired full control of the company. The Cobb 500's share of all chickens has increased in the decades since. In 2008, all Cobb line birds made up around 30-40% of global broilers. In 2016, the Cobb 500 alone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broiler
Breed broiler is any chicken (''Gallus gallus domesticus'') that is bred and raised specifically for meat production. Most commercial broilers reach slaughter weight between four and six weeks of age, although slower growing breeds reach slaughter weight at approximately 14 weeks of age. Typical broilers have white feathers and yellowish skin. Broiler or sometimes broiler-fryer is also used sometimes to refer specifically to younger chickens under , as compared with the larger roasters. Due to extensive breeding selection for rapid early growth and the husbandry used to sustain this, broilers are susceptible to several welfare concerns, particularly skeletal malformation and dysfunction, skin and eye lesions and congestive heart conditions. Management of ventilation, housing, stocking density and in-house procedures must be evaluated regularly to support good welfare of the flock. The breeding stock (broiler-breeders) do grow to maturity but also have their own welfare concerns ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
