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They have a dominant gene that causes hyperpigmentation (fibromelanosis), making the chicken mostly black, including feathers, beak, and internal organs. The Cemani is a very popular gamecock for cockfighting in Bali because their thighs have much more muscle compared to other chickens, which leads to them being much faster.
Small chickens have always been popular pets in this area and are often referred to as "ayam katik" (pygmy chickens) and "ayam cantik" (pretty chickens). The modern breed is attributed to the efforts of Wee Yean Een from Kelantan, who named the breed "Serama" after Rama, the title of the Kings of Thailand.
The Dutch Bantam (Dutch: Hollandse Kriel) is a breed of bantam chicken originating in the Netherlands. [6] [7] It is a true bantam, a naturally small bird with no related large fowl from which it was miniaturized. [8]: 136 It is kept mainly for exhibition, and has been bred in many color varieties; it is a good layer of small eggs. [9]: 45
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 ...
Fowlpox is a common disease in backyard chickens that have not been vaccinated. Most birds survive the infections, although very young or weak birds may be lost. The lesions initially looks like a whitish blister and appear on the comb, wattles and other skin areas.
The Silkie (also known as the Silky or Chinese silk chicken) is a Chinese breed of chicken named for its atypically fluffy plumage, which is said to feel like silk and satin. The breed has several other unusual qualities, such as black skin and bones , blue earlobes, and five toes on each foot, whereas most chickens have only four.
The Sussex chicken is graceful with a long, broad, flat back; a long and straight breastbone; wide shoulders; and a rectangular build. The tail is held at a 45-degree angle from the body. The eyes are red in the darker varieties but orange in the lighter ones. The comb is single. The earlobes are red and the legs and skin white in every variety.
Testing revealed that chickens fed with a variety of vitamin B12 produced with the residue of a specific antibiotic grew 50% faster than chickens fed with B12 from a different source. [2] Further research confirmed that antibiotic use improved chicken health, resulting in increased egg production, lower mortality rates, and reduced illness.