The Role of Chromium in Animal Nutrition (1997) / Chapter Skim
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Executive Summary
Executive Summary
Pages 1-5
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People who receive parenteral nutrition and those who are type II diabetics respond well to chromium supplementation. Research also has shown that supplemental dietary chromium is beneficial for humans and laboratory animals undergoing various stresses.
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Lower morbidity and plasma cortisol concentrations due to chromium supplementation have been reported; however, the responses have not been consistent. Efforts to establish enhanced immunity in response to vaccination or to foreign proteins have not shown consistent results, although blastogenesis in peripheral blood mononuclear cells cultured with T-lymphocyte mitogens was greater in cattle fed chromium-supplemented versus unsupplemented diets.
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Three experiments provide evidence to suggest that supplemental CrPic induces a hypoglycemic response or improves insulin efficiency in swine. Although responses of swine to supplemental chromium have been inconsistent, there is an increasing amount of evidence indicating that chromium may favorably alter metabolism of swine under some circumstances, with resultant improvements in growth rate, carcass traits, and reproductive performance.
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From page 4... ...
(1) It is not possible to make specific recommendations as to dietary form and concentration of chromium supplementation for cattle, poultry, and swine because · there are insufficient comparative data for the determination of relative biouvailabilities of chromium from supplemental sources; · only meager data are available from titration studies designed to determine supplemental chromium concentrations that are most effective for cattle, poultry, and swine; and · there have been no studies designed or conducted to determine dietary chromium requirements of cattle, poultry, or swine.
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From page 5... ...
Successful determination of dietary requirements will depend partly on establishment of procedures for chromium analysis of foodstuffs and diets that are sensitive and that will yield reproducible results. Research also should be planned to control and measure the impact of factors suspected of contributing to inconsistent responses of animals to chromium supplementation of practical diets.
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