The ISA Brown is a French breed of chicken, which is a cross between Rhode Island Red and Rhode Island White chickens. The breed is known for its high egg production of approximately 300 eggs per hen in the first year. The Rhode Island Red is a very popular breed of chicken for first time chicken owners, as these chickens are great layers, and very easy to raise.
ISA stands for Institut de Sélection Animale, the company which developed the breed in 1978 for egg production as a battery hen. In 1997, the ISA Group merged with Merck & Co., forming Hubbard ISA, so the breed is sometimes called Hubbard Isa Brown. In 2005, Institut de Sélection Animale (ISA) and Hendrix Poultry Breeders (HPB) merged. Institut de Sélection Animale SAS, France (ISA SAS) is now an operational center of Hendrix Genetics. In March 2005, Hubbard was purchased from Merial Ltd by Group Grimaud La Corbiere, SA.
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