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gamma decay: the protons and neutrons within the nucleus rearrange into a more stable form, and energy is emitted as a gamma ray.Note: this is not the same as an electron being removed from orbitals around the nucleus beta decay: the nucleus ejects an electron (or a positron).alpha decay: the nucleus releases an alpha particle (a helium-4 nucleus) consisting of two neutrons and two protons.neutron release: a neutron is ejected from the core of the atom.
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spontaneous fission: also known as “splitting the atom” as the nucleus breaks into two parts.Radioactive decay can occur in several ways, with the more common ones being: This instability is usually caused by a mismatch between the number of protons and neutrons. Decay occurs naturally and spontaneously to unstable nuclei. Radioactivity is the term given to the breaking-up (decay) or rearrangement of an atom’s nucleus. Infographic references: Performance Horse Nutrition, USGS, Janicki et al., 2001, Pagan et al., 1999Ĭontact your Poulin Grain Feed Specialist to test your hay quality and build a personalized diet for your horse.Radioactivity is the decay or rearragement of an atom’s nucleus. But with vitamin E, natural is significantly better.ġ00% Natural Vitamin E can be found in Poulin Grain's E-TEC and EQUI-PRO lines of super premium equine feeds.Ĭheck out these downloadable flyers for quick facts on Vitamin E and Selenium: There is little difference between the natural and synthetic forms of most vitamins. Specific transport proteins in the liver tend to bind better to natural vitamin E, allowing it to be transported to other tissues in the body to be used for important functions, including as an antioxidant. Due to its molecular structure, natural vitamin E is much better absorbed in the body. Natural vitamin E comes from plant oils instead of petroleum. Natural vitamin E is generally labelled d-alpha tocopherol, d-alpha tocopherol acetate, or d-alpha tocopherol succinate but can sometimes appear as mixed tocopherols (mixed tocopherols, contain not only d-alpha tocopherol but natural mixtures of beta, gamma, and delta tocopherols). Synthetic vitamin E is also excreted faster than the natural form, so it doesn’t have as much time to get into the tissues where it is needed. Some studies have shown that three times more synthetic vitamin E is needed to equal the biological activity of natural vitamin E. It is also not as bioavailable (meaning easily used by the body) as its natural counterpart, decreasing overall absorption and utilization of the vitamin. Synthetic vitamin E, due to its chemical structure, is only about 12% as potent as natural vitamin E. Synthetic vitamin E (dl-alpha-tocopherol or any variation starting with dl-) is found in most supplemental vitamin e sources fed to horses. Synthetic vitamin E does not come from a natural food source and is generally derived from petroleum products. Alpha-tocopherol is considered the most active natural form because it is the preferred form of vitamin E transported and used by the liver. Even though there are 8 forms of vitamin E, the most biologically active form of the vitamin is called alpha-tocopherol. Vitamin E naturally exists in eight different forms (alpha-, beta-, gamma-, and delta-tocopherols and tocotrienols) each of which has slightly different activity in the body. Normal reference ranges for plasma/serum concentrations of α-tocopherol in the horse are: The required amounts of Vitamin E, as set by the 2007 Nutrient Requirements for Horses, for an 1100lb horse are in the table below. Main dietary sources of vitamin E are fresh green grass and supplemental forms. Too much vitamin E (over 10,000 IU per day)can be dangerous and may increase the risk of, as well as interfere with, the uptake of Vitamin A. It aids the body in properly using vitamin K, helping maintain normal blood viscosity. Vitamin E also helps keep the immune system strong. Through this mechanism, vitamin E serves to maintain normal neuromuscular function. Its most important role is as an antioxidant that works closely with its partners Selenium and Vitamin C to protect the body from the oxidative stress of exercise, illness and certain medical conditions. Vitamin E (tocopherol) is an important fat-soluble vitamin that plays several roles in the body.