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Known are currently 8,800 different breeds of birds and mammals within 38 species used for food and agriculture. [1] 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".
Animal agriculture, in particular meat production, can cause pollution, greenhouse gas emissions, biodiversity loss, disease, and significant consumption of land, food, and water. Meat is obtained through a variety of methods, including organic farming , free-range farming , intensive livestock production , and subsistence agriculture .
Animal genetic resources for food and agriculture (AnGR), also known as farm animal genetic resources or livestock biodiversity, are genetic resources (i.e., genetic material of actual or potential value) of avian and mammalian species, which are used for food and agriculture purposes. AnGR is a subset of and a specific element of agricultural ...
A male horse is often gelded to make him better-behaved and easier to control. Gelding can also remove lower-quality animals from the gene pool. [7] To allow only the finest animals to breed on, while preserving adequate genetic diversity, only a small percentage of all male horses should remain stallions.
The average height at the withers of grown stallions is about 178 cm (17.2 hands), with a minimum of 173 cm (17.0 h); geldings should stand at least 168 cm (16.2 h), and mares no less than 163 cm (16.0 h). Weight ranges from 850 to 1100 kg (1870 to 2430 lb) for geldings and stallions, with no set standard for mares.
The negative impact of agriculture is an old issue that remains a concern even as experts design innovative means to reduce destruction and enhance eco-efficiency. [2] Animal agriculture practices tend to be more environmentally destructive than agricultural practices focused on fruits, vegetables and other biomass. The emissions of ammonia ...
[12] [13] [14] New Forest stallions, when not in their breeding work, take part on the annual round-ups, working alongside mares and geldings, and compete successfully in many disciplines. [15] [16] There are drawbacks to natural management, however. One is that the breeding date, and hence foaling date, of any given mare will be uncertain.
A "cobra" of Andalusians, that is, a group of mares shown by a single handler. Andalusians stallions and geldings average 15.1 1 ⁄ 2 hands (61.5 inches, 156 cm) at the withers and 512 kilograms (1,129 lb) in weight; mares average 15 1 ⁄ 2 hands (60.5 inches, 154 cm) and 412 kilograms (908 lb). [2]