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Most pigs in the US receive ractopamine which promotes muscle instead of fat, quicker weight gain, and reduced costs and pollutants in the environment. Such pigs consume less feed to reach finishing weight and produce less manure. Ractopamine has not been approved for use by the European Union, China, Russia, and several other countries. [44]
As of 2011 in the US, broiler chickens has an FCR of 1.6 based on body weight gain, and mature in 39 days. [25] At around the same time the FCR based on weight gain for broilers in Brazil was 1.8. [25] The global average in 2013 is around 2.0 for weight gain (live weight) and 2.8 for slaughtered meat (carcass weight). [26]
The Chester White is the most durable of the white breeds; it can gain as much as 1.36 pounds (0.62 kg) a day and gain 1 pound (0.45 kg) for every 3 pounds (1.4 kg) of grain it is fed. Their pale color leaves Chester Whites prone to sunburn; they must be given access to shade in the summer.
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The pigs are characterized by their red coat and distinctive wattles. They typically weigh 800–1,000 lb (360–450 kg). Large specimens can reach 1,200 lb (540 kg) in weight, 4 ft (120 cm) in height and 8 ft (240 cm) in length. They normally have 7 to 12 piglets per litter. [1]
An animal unit is the equivalent of 1,000 pounds of "live" animal weight. [1] A thousand animal units equates to 700 dairy cows, 1,000 meat cows, 2,500 pigs weighing more than 55 pounds (25 kg), 10,000 pigs weighing under 55 pounds, 10,000 sheep, 55,000 turkeys, 125,000 chickens, or 82,000 egg laying hens or pullets. [2]
Breed Origin Height Weight Color Image Aksai Black Pied: Kazakhstan: 167–182 cm: 240–320 kg (530–710 lb) Black and White--- American Yorkshire: United States
[121] [122] In English indoor farming, young pigs (less than 110kg in weight) are allowed to be kept with less than one square meter of space per pig. [ 123 ] Pigs often begin life in a farrowing or gestation crate , which is a small pen with a central cage, designed to allow the piglets to feed from their mother while preventing her from ...