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Suidae is a family of artiodactyl mammals which are commonly called pigs, hogs, or swine. In addition to numerous fossil species, 18 extant species are currently recognized (or 19 counting domestic pigs and wild boars separately), classified into between four and eight genera .
The snout is used to dig into the soil to find food and is a very acute sense organ. Each foot has four hooves with the two larger central toes bearing most of the weight, and the outer two also being used in soft ground. [12] The dental formula of adult pigs is 3.1.4.3 3.1.4.3, giving a total of 44 teeth. The rear teeth are adapted for crushing.
Pork belly cut, showing layers of muscle and fat A pig being slow-roasted on a rotisserie. Pork is the culinary name for the meat of the pig (Sus domesticus).It is the most commonly consumed meat worldwide, [1] with evidence of pig husbandry dating back to 5000 BCE.
A family of feral pigs. Pigs have escaped from farms and gone feral in many parts of the world. Feral pigs in the southeastern United States have migrated north to the Midwest, where many state agencies have programs to remove them. [35] [36] [37] Feral pigs in New Zealand and northern Queensland have caused substantial environmental damage.
The ground state of a quantum-mechanical system is its stationary state of lowest energy; the energy of the ground state is known as the zero-point energy of the system. An excited state is any state with energy greater than the ground state. In quantum field theory, the ground state is usually called the vacuum state or the vacuum. If more ...
When S > L there are only 2L+1 orientations of total angular momentum possible, ranging from S+L to S-L. [2] [3] The ground state of the nitrogen atom is a 4 S state, for which 2S + 1 = 4 in a quartet state, S = 3/2 due to three unpaired electrons. For an S state, L = 0 so that J can only be 3/2 and there is only one level even though the ...
118 chemical elements have been identified and named officially by IUPAC.A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z).
As of 2011, pigs used commercially in the UK and Europe had an FCR, calculated using weight gain, of about 1 as piglets and ending about 3 at time of slaughter. [5] As of 2012 [update] in Australia and using dressed weight for the output, a FCR calculated using weight of dressed meat of 4.5 was fair, 4.0 was considered "good", and 3.8, "very good".