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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.
[20] [21] Generally, chicken breeds with white ear lobes lay white eggs, whereas chickens with red ear lobes lay brown eggs. [22] Although there is no significant link between shell color and nutritional value, often there is a cultural preference for one color over another (see § Color of eggshell below). As candling is less effective with ...
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It is a calm and docile breed; the cocks are rarely aggressive. The hens lay very large brown eggs, and are fair layers overall, known particularly as good winter layers. The birds are robust and fairly cold-hardy. The breed's plumage comes in blue as well as black and white; legs are willow in hue. Jersey Giant hens will go broody. [2]
Kuroilers, a dual-purpose breed producing meat and eggs, can live on a diet of kitchen and agricultural waste, and produce around 150 eggs per year whereas native Indian hens lay only 40 per year. The meat yield per bird of Kuroilers is also greater; males weigh approximately 3.5 kg (7.7 lb) and females about 2.5 kg (5.5 lb) whereas the native ...
Naked Neck chickens. Despite its highly unusual appearance, the breed is not particularly known as an exhibition bird, and is a dual-purpose utility chicken. They lay a respectable number of light brown eggs, and are considered desirable for meat production because they need less plucking and they have a meaty body.
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Broiler breeder farms raise parent stock which produce fertilized eggs. A broiler hatching egg is never sold at stores and is not meant for human consumption. [9] The males and females are separate genetic lines or breeds, so that each line can be selected for optimal traits for productivity in either females or males, rather than a single line in which a compromise is reached between female ...