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The Cobb 500 is a fast-growing broiler chicken breed. They can reach a 2 kg slaughter weight at 33 days old. [1] [2] They make up around half of all globally farmed chickens as of 2016. [3] 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 ...
Breed broiler is any chicken (Gallus gallus domesticus) that is bred and raised specifically for meat production. [1] Most commercial broilers reach slaughter weight between four [2] 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.
The quantity of feed, and the nutritional requirements of the feed, depend on the weight and age of the poultry, their rate of growth, their rate of egg production, the weather (cold or wet weather causes higher energy expenditure), and the amount of nutrition the poultry obtain from foraging. This results in a wide variety of feed formulations.
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 ...
Organic poultry production requires organic management in nutrition, preventative health care, living conditions, handling/processing, and record keeping. [22] The Soil Association standards [ 23 ] used to certify organic flocks in the UK indicate a maximum outdoors stocking density of 1,000 birds per hectare and a maximum of 2,000 hens in each ...
The WIMEX Group is an internationally active German company in the meat and agricultural industry, based in Köthen, Saxony-Anhalt.With an annual capacity of 435.455 million hatching eggs, it is the largest producer of day-old chicks for chicken fattening in Europe [3] and one of the world's largest suppliers of broiler chickens of the Cobb breed. [4]
In the case of poultry, free range is the dominant system until the discovery of vitamins A and D in the 1920s, which allowed confinement to be practised successfully on a commercial scale. Before that, green feed and sunshine (for the vitamin D) were necessary to provide the necessary vitamin content. [ 2 ]
The discovery of vitamins and their role in animal nutrition, in the first two decades of the 20th century, led to vitamin supplements, which allowed chickens to be raised indoors. [22] The discovery of antibiotics and vaccines facilitated raising livestock in larger numbers by reducing disease.