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Farm animals, iodine deficiency

Without iodine supplements in the form of marine fishmeal or mineral mixtures, the farm animals of most countries worldwide would suffer of iodine deficiency. Germany and most industrially developed countries unconsciously supply farm animals (and in turn the population) with iodine by fertilizing the land with Chile saltpeter, which has a high iodine content. During World War I, the importation of Chile saltpeter to Europe was stopped, and thereafter synthetic nitrogen containing no iodine was produced worldwide. Consequently, iodine deficiencies in both animals and man reap-... [Pg.1465]

In 1985, to combat iodine deficiency in the former state of East Germany, salt for human consumption was iodized and iodine was added to animal feed (Anke et al., 1993). Eliminating iodine deficiency in farm animals improved the iodine content of milk and eggs. This further increased the dietary iodine intake of East Germans (see section The Effect of Iodine Intake on the Iodine Gontent of Eggs, Meat and Milk ). The program successfully reduced iodine deficiency in both humans and farm animals, and could be used as a model for iodine supplementation in other countries. [Pg.152]

The recommended dietary iodine intakes represent amounts of iodine sufficient to prevent symptoms of deficiency and impairment of health or performance while maintaining the body s store of iodine (see sections Requirements/ Recommendations for Iodine Supplementation and Response Criteria and Dose—Response Studies of Iodine Requirement in Farm Animals ). Recommended daily... [Pg.153]

Despite the low iodine content of plants, the development or severity of iodine deficiency is amefiorated by the trace amounts of iodine in some feeds, drinking water and even air. As a result of the iodine content of seawater and its vaporization and precipitation air, water, soil and plants in coastal regions contain more iodine (McDowell, 2003). Livestock kept on coastal farms are therefore less at risk of iodine deficiency than those reared on mountains. In addition, the types and amounts of iodine antagonists, the iodine reserves and salvaging mechanisms vary between farm animal species, categories, herds and individuals. [Pg.155]

Although farm animals can adapt to diets poor in iodine, the prevention of deficiency requires the use of simple and valid laboratory criteria to diagnose iodine deficiency. As stated above, the thyroid iodine content of hypothyroid animals with goiter is low. As a result levels ofT4 in the serum are undetectable, but reduction of T3, the more active thyroid hormone, only occurs if iodine deficiency is severe. Elevation ofT3 may occur in early hypothyroidism however, this is not consistent and can not therefore be used to diagnose iodine deficiency (Schone et al, 1991). [Pg.157]

In 1907, Marine, an American medical scientist, studied thyroid disease and iodine deficiency in farm animals and fish. Then, in 1916, he began to apply his findings to the prevention of goiter in humans. His administration of sodium iodide to school girls in the fifth to twelfth grades in Ohio demonstrated that such treatment effectively prevented goiter. [Pg.515]

Contrary to plants, iodine is essential for animals. Farm animals from iodine-deficient areas on weathered soils originating from marine sediments, and on the glacial formations in considerable distance from oceans, whose iodine was also eluted, must be supplemented with iodine via mineral mixtures. Otherwise a decline of productivity is observed. [Pg.153]

Farm animal studies demonstrate that in normal large animals, the oral absorption of lipiodol causes a progressive increase in blood iodine levels. In iodine deficient pigs, a very rapid increase in blood iodine levels, which lasted 2,5 months, was observed. The clinical efficiency of the iodized oils therapy was strongly suggested by various authors who evidenced lamb goiter in Australia and New Zealand and successfully treated it by iodized oils . [Pg.163]


See other pages where Farm animals, iodine deficiency is mentioned: [Pg.155]    [Pg.155]    [Pg.153]    [Pg.587]    [Pg.1458]    [Pg.1465]    [Pg.1470]    [Pg.1470]    [Pg.151]    [Pg.153]    [Pg.154]    [Pg.154]    [Pg.762]    [Pg.127]    [Pg.428]    [Pg.3952]   


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