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It has been shown that Styrian Chickens lay the most eggs when bred traditionally (extensively), on the farm's backyard. [5] Relatively small [6] eggs are light, of ivory colour and usually weigh 55 grams. [3] The Altsteirer is a dual-purpose breed mostly used for obtaining eggs, but also slaughtered for its good quality meat, [3] especially of ...
Scientists had found that chickens fed an antibiotic residue grew 50 percent faster than controls. [73] The chickens laid more eggs and experienced lower mortality and less illness. Upon this discovery, farmers transitioned from expensive animal proteins to comparatively inexpensive antibiotics and B12.
Selective breeding over the centuries has produced hens that lay more eggs than they can hatch. Some of this progress was ancient, but most occurred after 1900. In 1900, average egg production was 83 eggs per hen per year. In 2000, it was well over 300. In the United States, laying hens are butchered after their second egg laying season.
For hens used in egg production in the US, as of 2011 the FCR was about 2, with each hen laying about 330 eggs per year. [25] When slaughtered, the world average layer flock as of 2013 yields a carcass FCR of 4.2, still much better than the average backyard chicken flock (FCR 9.2 for eggs, 14.6 for carcass).
The most common commercial breed in the United Kingdom and the United States is the Pekin duck, which can lay 200 eggs a year and can reach a weight of 3.5 kg (7 lb 11 oz) in 44 days. [34] In the Western world , ducks are not as popular as chickens, because the latter produce larger quantities of white, lean meat and are easier to keep ...
The New Hampshire Red was bred to be a dual-purpose breed, suitable for production of both meat and eggs. It adapts well to either intensive or extensive management, and yields a meaty carcass. [8]: 192 [10]: 97 Hens lay approximately 220 brown eggs per year, with an average weight of about 55 g; [12] they sit well, and are good mothers.
One of the easiest things you can do is choose chickens that are already the same size, color, and breed as the rest of your other chickens. Chickens will noticed when there's an odd bird out and ...
In the early part of the twentieth century, it was one of the principal breeds kept for this purpose, until it was displaced by modern industrial hybrid lines. It may be kept as a dual-purpose bird. Hens lay some 180–200 tinted eggs per year; some layer strains may give up to 250. [7] The eggs weigh about 60 g. [9]