Animal genetic resources for food and agriculture of animal genetic resources includes diversity at species, breed and within-breed level. Known are currently 8,800 different breeds of birds and mammals within 38 species used for food and agriculture. The main animal species used for food and agriculture production are cattle, sheep, goats, chickens and pigs. In the livestock world, these species are often referred to as "the big five". Some less-utilized species include the dromedary, donkey, bactrian camel, buffalo, guinea pig, horse, rabbit, yak, goose, duck, ostrich,partridge, pheasant, pigeon, and turkey. The history of animal genetic resources begins about 12,000 to 14,000 years ago. The domestication of major
Half-Breeds (politics) they perceived as being only half Republican. In the 1880 Republican National Convention, the Stalwart candidate, former president Ulysses S. Grant, was pitted against Half-Breed James G. Blaine for the party nomination. Grant's campaign was led by Stalwart leader Roscoe Conkling of New York, the state with the biggest split between Stalwarts and Half-Breeds. Despite Conkling's attempts at imposing a unit-rule in the Republican National Convention by which a state's votes would be grouped together for only one candidate, a number of Stalwarts went against him by vocalizing their support for the Half-Breed Blaine. The Half-Breeds united to defeat the