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Selenium in Food Chain and Animal Nutrition: Lessons from Nature -Review-
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 Title & Authors
Selenium in Food Chain and Animal Nutrition: Lessons from Nature -Review-
Lyons, M.P.; Papazyan, T.T.; Surai, P.F.;
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 Abstract
Selenium is considered to be one of the most controversial trace elements. On the one hand, it is toxic at high doses and there is a great body of information related to environmental issues of Se contamination. On the other hand, Se deficiency is a global problem related to an increased susceptibility to various diseases of animals and humans and decreased productive and reproductive performance of farm animals. Optimisation of Se nutrition of poultry and farm animals will result in increased efficiency of egg, meat and milk production and even more important, will improve quality. From the data presented in the review it is clear that the main lesson which we have to learn from nature is how to use organic selenium in animal and human diets. Selenium-enriched yeast (Sel-Plex) is the result of such a lesson and it is just a matter of time before animal nutrition moves completely from using ineffective sodium selenite to organic selenium. Other lessons from nature will follow. Recent advances in genomics and proteomics, in association with descriptions of new selenoproteins, will be a driving force in reconsidering old approaches related to Se nutrition. Probably 90% of all Se research has been conducted with sodium selenite and we now understand that the natural form of selenium is different. The main advances in Se status assessment and Se requirements were established based on the activity of glutathione peroxidase (GSH-Px), an enzyme which for many years was considered to be the main selenoprotein. Recently it was discovered that it is only one of at least 25 various selenoproteins. Se research and practical applications are developing quickly and they are very exciting and promising.
 Keywords
Selenium;Selenomethionine;Se-yeast;Nutrition;Poultry;Farm Animals;
 Language
English
 Cited by
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 References
1.
Agate, D. D., E. E. O'Dea and M. E. Rustad. 2000. Effects of dietary selenium on laying hen fertility as assessed by the perivitelline sperm hole assay. Proceedings of the Poultry Research and Production Symposium, Alberta Poultry Research Centre, pp. 1-4.

2.
Alfthan, G., G. L. Xu, W. H. Tan, A. Aro, J. Wu, Y. X. Yang, W. S. Liang, W. L. Xue and L. H. Kong. 2000. Selenium supplementation of children in a selenium-deficient area in China: blood selenium levels and glutathione peroxidase activities. Biol. Trace Elem. Res. 73:113-125. crossref(new window)

3.
Anciuti, M. A., F. Rutz, L. A. Da Silva, R. C. Cosenza and R. G. Da Silva. 2004. Effect of replacement of dietary inorganic by organic selenium (Sel-Plex) on performance of broilers. Nutritional Biotechnology in the Feed and Food Industry. Proceedings of the 20th Annual Symposium (Suppl. 1), May 22-26, 2004, Lexington, Kentucky, USA, p. 14.

4.
Aspila, P. 1991. Metabolism of selenite, selenomethionine and feed-incorporated selenium in lactating goats and dairy cows. J. Agric. Sci. Finland. 63:1-74.

5.
Awadeh, F. T., R. L. Kincaid and K. A. Johnson. 1998. Effect of level and source of dietary selenium on concentrations of thyroid hormones and immunoglobulins in beef cows and calves. J. Anim. Sci. 76:1204-1215.

6.
Awadeh, F. T., M. M. Abdelrahman, R. L. Kincaid and J. W. Finley. 1998a. Effect of selenium supplements on the distribution of selenium among serum proteins in cattle. J. Dairy Sci. 81:1089-1094. crossref(new window)

7.
Bansal, M. P. and T. Kaur. 2002. Growth characteristics and selenium status changes of yeast cells with inorganic and organic selenium supplementation: selenium, a chemopreventive agent. J. Med. Food. 5:85-90. crossref(new window)

8.
Beilstein, M. A. and P. W. Whanger. 1988. Glutathione peroxidase activity and chemical forms of selenium in tissues of rats given selenite or selenomethionine. J. Inorg. Biochem. 33:31-46. crossref(new window)

9.
Beilstein, M. A., P. D. Whanger and G. Q. Yang. 1991. Chemical forms of selenium in corn and rice grown in a high selenium area of China. Biomed. Environ. Sci. 4:392-398.

10.
Bergman, K. and P. Slanina. 1986. Effects of dietary selenium compounds on benzo (a)-pyrene-induced forestomach tumours and whole-blood glutathione peroxidase activities in C3H mice. Anticancer Res. 6:785-790.

11.
Block, E., R. S. Glass, N. E. Jacobsen, S. Johnson, C. Kahakachchi, R. Kaminski, A. Skowronska, H. T. Boakye, J. F. Tyson and P. C. Uden. 2004. Identification and Synthesis of a Novel Selenium-Sulfur Amino Acid Found in Selenized Yeast: Rapid Indirect Detection NMR Methods for Characterizing Low-Level Organoselenium Compounds in Complex Matrices. J. Agric. Food Chem. 52:3761-3771. crossref(new window)

12.
Bobcek, R., J. Mrazova, B. Bobcek and R. Lahucky. 2004. The influence of organic selenium on the production parameters and pig meat quality. J. Centr. Eur. Agric. 5:69.

13.
Bogye, G., G. Alfthan and T. Machay. 1998. Bioavailability of enteral yeast-selenium in preterm infants. Biol. Trace Elem. Res. 65:143-151. crossref(new window)

14.
Botero, D., B. Gereben, C. Goncalves, L. A. De Jesus, J. W. Harney and A. C. Bianco. 2002. Ubc6p and ubc7p are required for normal and substrate-induced endoplasmic reticulumassociated degradation of the human selenoprotein type 2 iodothyronine monodeiodinase. Mol. Endocrinol. 16:1999-2007. crossref(new window)

15.
Broadley, M. R., P. J. White, R. J. Bryson, M. C. Meacham, H. C. Bowen, S. E. Johnson, M. J. Hawkesford, S. P. McGrath, F. J. Zhao, N. Breward, M. Harriman and M. Tucker. 2006. Biofortification of UK food crops with selenium. Proc. Nutr. Soc. 65:169-181. crossref(new window)

16.
Brody, T. 1994. Nutritional Biochemistry. Academic Press, Inc. New York, NY.

17.
Bugel, S., B. Sandstrom and L. H. Skibsted. 2004. Pork meat: a good source of selenium? J. Trace Elem. Med. Biol. 17:307-311. crossref(new window)

18.
Burk, R. F., K. E. Hill and A. K. Motley. 2001. Plasma selenium in specific and non-specific forms. Biofactors 14:107-114. crossref(new window)

19.
Butler, J. A., C. D. Thomson, P. D. Whanger and M. F. Robinson. 1991. Selenium distribution in blood fractions of New Zealand women taking organic or inorganic selenium. Am. J. Clin. Nutr. 53:748-754.

20.
Butler, J. A., P. D. Whanger, A. J. Kaneps and N. M. Patton. 1990. Metabolism of selenite and selenomethionine in the rhesus monkey. J. Nutr. 120:751-759.

21.
Burk, R. F. and K. E. Hill. 1994. Selenoprotein P. A selenium-rich extracellular glycoprotein. J. Nutr. 124:1891-1897.

22.
Cantor, A. H., N. D. Paton, A. J. Pescatore, M. J. Ford and C. A. Smith. 2003. The effect of selenium yeast in the hen's diet on transfer of selenium to the egg and the developing embryo. Krmiva 45: 327-334.

23.
Cao, Z. H., X. C. Wang, D. H. Yao, X. L. Zhang and M. H. Wong. 2001. Selenium geochemistry of paddy soils in Yangtze River Delta. Environ. Int. 26:335-339. crossref(new window)

24.
Choct, M. and A. J. Naylor. 2004. The effect of dietary selenium source and vitamin E levels on performance of male broilers. Asian-Aust. J. Anim. Sci. 17:1000-1006

25.
Close, W. H. 2003. Organic selenium may improve sow, piglet performance. Feedstuffs 75:8.

26.
Combs, G. F. and S. B. Combs. 1984. The nutritional biochemistry of selenium. Ann. Rev. Nutr. 4:257-280. crossref(new window)

27.
Combs, G. F. Jr. and S. B. Combs. 1986. The Role of Selenium in Nutrition. Academic Press, Inc. New York.

28.
Conrad, H. R. and A. L. Moxon. 1979. Transfer of dietary selenium to milk. J. Dairy Sci. 62:404-411. crossref(new window)

29.
Curcio, C., M. M. Baqui, D. Salvatore, B. H. Rihn, S. Mohr, J. W. Harney, P. R. Larsen and A.C. Bianco. 2001. The human type 2 iodothyronine deiodinase is a selenoprotein highly expressed in a mesothelioma cell line. J. Biol. Chem. 276:30183-30187. crossref(new window)

30.
Daniels, L. A. 1996. Selenium metabolism and bioavailability. Biol. Trace Elem. Res. 54:185-199. crossref(new window)

31.
Deagen, J. T., J. A. Butler, M. A. Beilstein and P. D. Whanger. 1987. Effects of dietary selenite, selenocystine and selenomethionine on selenocysteine lyase and glutathione peroxidase activities and on selenium levels in rat tissues. J. Nutr. 117:1-98.

32.
Demirci, A., A. L. Pometto and D. J. Cox. 1999. Enhanced organically bound selenium yeast production by fed-batch fermentation. J. Agric. Food Chem. 47: 2496-2500. crossref(new window)

33.
Diaz, D. E., M. Casagrandi, A. Tampieri, L. Piccinni and P. Geliot. 2004. Increases in milk selenium concentrations and decreases in somatic cell counts in dairy cattle consuming selenium yeast (Sel-$Plex^{TM}$). Proceedings of the 20th Annual Symposium on Nutritional Biotechnology in the Feed and Food Industries, Lexington, Kentucky (Suppl. 1) Abstracts of Posters Presented, p.24.

34.
Dorea, J.G. 2002. Selenium and breast-feeding. Brit. J. Nut. 88:443-461. crossref(new window)

35.
Ducros, V., F. Laporte, N. Belin, A. David and A. Favier. 2000. Selenium determination in human plasma lipoprotein fractions by mass spectrometry analysis. J. Inorg. Biochem. 81:105-109. crossref(new window)

36.
Edens, F. W. 1996. Organic selenium: from feathers to muscle integrity to drip loss. Five years onward: no more selenite! In: Biotechnology in the Feed industry. Proceedings of 12th Alltech's Annual Symposium (Ed. T. P. Lyons and. K. A. Jacques). Nottingham University Press, Nottingham, UK. pp. 165-185.

37.
Edens, F. W. 1997. Potential for organic selenium to replace selenite in poultry diets. Zootecnica Intern. 20:28-31.

38.
Edens, F. W. 2001. Involvement of Sel-Plex in physiological stability and performance of broiler chickens. In: Biotechnology in the Feed industry. Proceedings of 17th Alltech's Annual Symposium (Ed. T. P. Lyons and K. A. Jacques). Nottingham University Press, Nottingham, UK. pp. 349-376.

39.
Edens, F. W. 2002. Practical applications for selenomethionine: broiler breeder reproduction. In: Nutritional Biotechnology in the Feed and Food Industries. Proceedings of 18th Alltech's Annual Symposium (Ed. T. P. Lyons and K. A. Jacques). Nottingham University Press, Nottingham, UK. pp. 29-42.

40.
Edens, F. W. and K. M. Gowdy. 2004. Field results with broilers fed selenium yeast. In: Nutritional Biotechnology in the Feed and Food Industry. Proceedings of the 20th Annual Symposium (Suppl. 1), May 22-26, 2004, Lexington, Kentucky, USA, p. 32.

41.
Edens, F. W. and A. E. Sefton. 2003. Sel-Plex in broiler breeder diets: improved performance. Poster presented at Alltech's 19th Annual Symposium on Nutritional Biotechnology in the Feed and Food Industries, Lexington, Ky, May 12-14, 2003, CD-ROM.

42.
Ehlig, C. F., D. E. Hogue, W. H. Allaway and D. J. Hamm. 1967. Fate of selenium from selenite or seleno-methionine, with or without vitamin E, in lambs. J. Nutr. 92:121-126.

43.
Ekholm, P., P. Varo, P. Aspila, P. Koivistoinen and L. Syrjalaqvist. 1991. Transport of feed selenium to different tissues of bulls. Br. J. Nutr. 66:49-55. crossref(new window)

44.
Eliott, S., G. Harrison and K. Dawson 2005. Selenium supplementation of dairy cattle: responses to organic and inorganic forms of selenium. Proc. Midwestern section ASAS and Midwest Branch ADSA Meeting, Des Moines. Abstr. 265.

45.
Erokhin, A. S. and V. V. Nikonov. 2001. Improvement of the reproductive function of cows after parenteral injection of DAFS-25. Russian Agric. Sci. 9:25-27.

46.
Encinar, J. R., R. Ruzik, W. Buchmann, J. Tortajada, R. Lobinski and J. Szpunar. 2003. Detection of selenocompounds in a tryptic digest of yeast selenoprotein by MALDI time-of-flight MS prior to their structural analysis by electrospray ionization triple quadrupole MS. Analyst. 128:220-224. crossref(new window)

47.
Fisher, D. D., S. W. Saxton, R. D. Elliot and J. M. Beatty. 1995. Effects of selenium source on Se status of lactating cows. Vet. Clin. Nutr. 2:68-74.

48.
Foltys, V., R. Bobcek, K. Kirchenkova and I. Straka. 2004. Effect of Sel-Plex supplementation on milk selenium and somatic cell counts in a commercial dairy herd. Proceedings of the 20th Annual Symposium on Nutritional Biotechnology in the Feed and Food Industries, Lexington, Kentucky (Suppl. 1) Abstracts of Posters Presented, p. 27.

49.
Gallegos, A., M. Berggren, J. R. Gasdaska and G. Powis. 1997. Mechanisms of the regulation of thioredoxin reductase activity in cancer cells by the chemopreventive agent selenium. Cancer Res. 57:4965-4970.

50.
Gassner, N. C., W. A. Baase, A. C. Hausrath and B. W. Matthews. 1999. Substitution with selenomethionine can enhance the stability of methionine-rich proteins. J. Mol. Biol. 294:17-20. crossref(new window)

51.
Goh, K. H. and T. T. Lim. 2004. Geochemistry of inorganic arsenic and selenium in a tropical soil: effect of reaction time, pH, and competitive anions on arsenic and selenium adsorption. Chemosphere 55:849-859. crossref(new window)

52.
Gourley, G. G., J. F. Lampe, J. C. Sparks and T. T. Stumpf. 2005. Piglet survivability and performance: Sel-Plex versus sodium selenite in sow and nursery diets. In: Nutritional Biotechnology in the Feed and Food Industry. Proceedings of the 21st Annual Symposium (Ed. T. P. Lyons and K. A. Jacques). Nottingham University Press, Nottingham, UK, pp. 153-156.

53.
Gowdy, K. M., F. W. Edens and M. A. Qureshi. 2003. Toxic influence of selenite on development and immunity in broiler chickens. Poster presented at Alltech's 19th Annual Symposium on Nutritional Biotechnology in the Feed and Food Industries, Lexington, Ky, May 12-14, 2003, CD-Room.

54.
Gu, Q. P., W. Ream and P. D. Whanger. 2002. Selenoprotein W gene regulation by selenium in L8 cells. Biometals 15:411-420. crossref(new window)

55.
Gu, Q. P., Y. M. Xia, P. C. Ha, J. A. Butler and P. D. Whanger. 1998. Distribution of selenium between plasma fractions in guinea pigs and humans with various intakes of dietary selenium. J. Trace Elem. Med. Biol. 12:8-15.

56.
Gunter, S. A., P. A. Beck and J. K. Phillips. 2003. Effects of supplementary selenium source on the performance and blood measurements in beef cows and their calves. J. Anim. Sci. 81:856-864.

57.
Harrison, G. A., J. M. Tricarico and B. Lawrence. 2005. Effect of Sel-$Plex^{TM}$ supplementation during the dry period on whole blood and colostrum selenium in dairy cows in a commercial dairy herd in the Southeastern US. Proceedings of the 21th Annual Symposium on Nutritional Biotechnology in the Feed and Food Industries, Lexington, Kentucky (Suppl. 1) Abstracts of Posters Presented.

58.
Harrison, G. A., J. M. Tricarico and J. N. Tikofsky. 2005a. Effect of Sel-PlexTM supplementation to lactating dairy cows on blood and milk selenium in a commercial dairy herd in the Northeastern US. Proceedings of the 21th Annual Symposium on Nutritional Biotechnology in the Feed and Food Industries, Lexington, Kentucky (Suppl. 1) Abstracts of Posters Presented.

59.
Harrison, G. A., J. M. Tricarico and S. A. Eliott. 2005b. Effect of Sel-$Plex^{TM}$ supplementation on milk production, composition, and somatic cell count of lactating dairy cows in commercial dairy herds. 1. Whole herd responses. Proceedings of the 21th Annual Symposium on Nutritional Biotechnology in the Feed and Food Industries, Lexington, Kentucky (Suppl. 1) Abstracts of Posters Presented.

60.
Haygarth, P. M., A. F. Harrison and K. C. Jones. 1995. Plant selenium from soil and the atmosphere. J. Environ. Quality 24:768-771. crossref(new window)

61.
Hemken, R. W., R. J. Harmon and S. Trammell. 1998. Selenium for dairy cattle: a role for organic selenium. Feed Compounder 18:22-24.

62.
Hinojosa Reyes, L., J. M. Marchante-Gayon, J. I. Garcia Alonso and A. Sanz-Medel. 2006. Application of isotope dilution analysis for the evaluation of extraction conditions in the determination of total selenium and selenomethionine in yeastbased nutritional supplements. J. Agric. Food Chem. 54:1557-1563. crossref(new window)

63.
Hondal, R. J., A. K. Motley, K. E. Hill and R. F. Burk. 1999. Failure of selenomethionine residues in albumin and immunoglobulin G to protect against peroxynitrite. Arch. Biochem. Biophys. 371:29-34. crossref(new window)

64.
Huang ZhiJian, Lin Fan Ping, Qiu Chen Liang, Luo Jin Mu and Wu Yi Shan. 2002. Effects of selenium on reproductive performances and immune functions in dairy cows. Journal of Fujian Agricultural and Forestry University 31:76-79.

65.
Ip, C., M. Birringer, E. Block, M. Kotrebai, J. F. Tyson, P. C. Uden and D. J. Lisk. 2000. Chemical speciation influences comparative activity of selenium-enriched garlic and yeast in mammary cancer prevention. J. Agric. Food Chem. 48:2062-2070. crossref(new window)

66.
Ip, C. and C. Hayes. 1989. Tissue selenium levels in selenium-supplemented rats and their relevance in mammary cancer protection. Carcinogenesis 10:921-925.

67.
Janyk, S. W. 2001. A selenium supplement for sows. Pig. International 31:19-20.

68.
Janyk, W. S., D. J. Opperman, C. C. Rall, P. L. Opperman and A. T. Browne. 1998. Effect of organic or inorganic selenium and vitamin E supplementation on the reproductive performance of sows. Proceedings of the Asia-Pacific Animal Science Meeting, Seoul, July 1998.

69.
Jonnalagadda, S. B. and P. V. Rao. 1993. Toxicity, bioavailability and metal speciation. Comp. Biochem. Physiol. 106C:585-595.

70.
Khaled, N. F. and J. Illek. 1999. Influence of dietary supplementation of selenium-enriched yeast on selenium status of dairy goats. Proceedings of the 19th Conference on Macro and Trace Elements. Friedrich-Schiller University, Jena, Germany, December 3-4, pp. 244-251.

71.
Kim, B. W., A. M. Zavacki, C. Curcio-Morelli, M. Dentice, J. W. Harney, P. R. Larsen and A. C. Bianco. 2003. ER-associated degradation of the human type 2 iodothyronine deiodinase (D2) is mediated via an association between mammalian UBC7 and the carboxyl region of D2. Mol. Endocrinol. 17:2603-2612. crossref(new window)

72.
Kim, Y. Y. and D. C. Mahan. 2001. Prolonged feeding of high dietary levels of organic and inorganic selenium to gilts from 25 kg body weight through one parity. J. Anim. Sci. 79:956-966.

73.
Kim, Y. Y. and D. C. Mahan. 2001a. Comparative effects of high dietary levels of organic and inorganic selenium on selenium toxicity of growing-finishing pigs. J. Anim. Sci. 79:942-948.

74.
Kim, Y. Y. and D. C. Mahan. 2001b. Effect of dietary selenium source, level, and pig hair color on various selenium indices. J. Anim. Sci. 79:949-955.

75.
Kim, Y. Y. and D. C. Mahan. 2003. Biological aspects of selenium in farm animals. Asian-Aust. J. Anim. Sci. 16:435-444.

76.
Klecker, D., L. Zeaman and A. Bunesova. 1997. Effect of organic selenium on the quality parameters of eggs. Proceedings of the 48th Annual Meeting of the European Association of Animal Production, Vienna, August 25-28, 1997, p. 89.

77.
Klecker, D., M. Zantlokaul and L. Zeaman. 2001. Effect of organic selenium, zink and manganese on reproductive traits of laying hens and cockerels on the quality parameters of eggs. Proceedings of the 13th European Symposium on Poultry Nutrition, Blankenberge, Belgium, October, 2001.

78.
Knowles, S. O., N. D. Grace, K. Wurms and J. Lee. 1999. Significance of amount and form of dietary selenium on blood, milk, and casein selenium concentrations in grazing cows. J. Dairy Sci. 82:429-443. crossref(new window)

79.
Korhola, M., A. Vainio and K. Edelmann. 1986. Selenium yeast. Ann. Clin. Res. 18:65-68.

80.
Kremer, D., G. Ilgen and J. Feldmann. 2005. GC-ICP-MS determination of dimethylselenide in human breath after ingestion of (77)Se-enriched selenite: monitoring of in-vivo methylation of selenium. Analyt. Bioanalyt. Chem. 383:509-515. crossref(new window)

81.
Kuehnelt, D., N. Kienzl, P. Traar, N. H. Le, K. A. Francesconi and T. Ochi. 2005. Selenium metabolites in human urine after ingestion of selenite, L:-selenomethionine, or DL: -selenomethionine: a quantitative case study by HPLC/ICPMS. Analyt. Bioanalyt. Chem. 383:235-246. crossref(new window)

82.
Lampe, J., G. Gourley, J. Sparks and T. Stumpf. 2005. Prewean piglet survivability: Sel-$Plex^{\circledx}$ verse sodium selenite as selenium source in sow diets. Proceedings of Midwest Section of ASAS, DesMoines, IA.

83.
Lampe, J., G. Gourley, J. Sparks and T. Stumpf. 2005a. Postwean piglet survivability: Sel-$Plex^{\circledx}$ verse sodium selenite as selenium source in sow and nursery phase diets. Proceedings of Midwest Section of ASAS, DesMoines, IA.

84.
Lanning, D., K. Ayres and S. Kenyon. 2000. Sel-Plex in the breeder diet: reductions in chick mortality: summary of commercial studies in Britain 2000. Alltech UK, Stamford, Lincs. UK

85.
Larsen, E. H., M. Hansen, H. Paulin, S. Moesgaard, M. Reid and M. Rayman. 2004. Speciation and bioavailability of selenium in yeast-based intervention agents used in cancer chemoprevention studies. J. AOAC Intern. 87:225-232.

86.
Larsen, E. H., M. Hansen, T. Fan and M. Vahl. 2001. Speciation of selenoamino acids, selenium ions and inorganic selenium by ion exchange HPLC with mass spectrometric detection and its application to yeast and algae. J. Anal. At. Spectrom. 16:1403-1408. crossref(new window)

87.
Levander, O. A. 1983. Bio-availability of selenium to Finnish men as assessed by platelet glutathione peroxidase activity and other blood parameters. Am. J. Clin. Nutr. 37:887-897.

88.
Liang, L., S. Mo, P. Zhang, Y. Ca, S. Mou, G. Jiang and M. Wen. 2006. Selenium speciation by high-performance anionexchange chromatography-post-column UV irradiation coupled with atomic fluorescence spectrometry. J. Chromatogr. A. 1118:139-143. crossref(new window)

89.
Luo, X. M., H. J. Wei, C. L. Yang, J. Xing, X. Liu, C. H. Qiao, Y. M. Feng, J. Liu, Y. X. Liu and Q. Wu. 1985. Bioavailability of selenium to residents in a low-selenium area of China. Am. J. Clin. Nutr. 42:439-448.

90.
Lyons, G., J. Stangoulis and R. Graham. 2003. High-selenum wheat: biofortification for better health. Nutr. Res. Rev. 16:45-60. crossref(new window)

91.
MacPherson, A. 2000. Trace mineral status of forages. In: (Ed. D. I. Givens, E. Owen, H. M. Omedand R. F. E. Axford) Forage Evaluation in Ruminant Nutrition, CAB International, pp. 345-371.

92.
Mahan, D. C. 2000. Effect of organic and inorganic selenium sources and levels on sow colostrum and milk selenium content. J. Anim. Sci. 78:100-105.

93.
Mahan, D. C. 1996. Are we still having vitamin E and selenium deficiencies in pigs? In: Illini PorkNet Papers, The Online Resource for the Pork Industry, pp. 1-21. http://www.traill.uiuc.edu/uploads/porknet/papers/mahan%2Epdf

94.
Mahan, D. C. 1991. Vitamin E and selenium in swine nutrition. In: Swine Nutrition (Ed. E. R. Miller, D. E. Ullrey and A. J. Lewis), Butterworth-Heineman, Boston, MA, pp. 193-214.

95.
Mahan, D. C. 1994. Effects of dietary vitamin E on sow reproductive performance over a five-parity period. J. Anim. Sci. 72:2870-2879.

96.
Mahan, D. C. and Y. Y. Kim. 1996. Effect of inorganic or organic selenium at two dietary levels on reproductive performance and tissue selenium concentrations in first-parity gilts and their progeny. J. Anim. Sci. 74:2711-2718.

97.
Mahan, D. C. and J. C. Peters. 2004. Long-term effects of dietary organic and inorganic selenium sources and levels on reproducing sows and their progeny. J. Anim. Sci. 82:1343-1358.

98.
Mahan, D. C., T. R. Cline and B. Richert. 1999. Effects of dietary levels of selenium-enriched yeast and sodium selenite as selenium sources fed to growing-finishing pigs on performance, tissue selenium, serum glutathione peroxidase activity, carcass characteristics, and loin quality. J. Anim. Sci. 77:2172-2179.

99.
Mahan, D. C. and Y. Y. Kim. 1996. Effect of inorganic or organic selenium at two dietary levels on reproductive performance and tissue selenium concentrations in first-parity gilts and their progeny. J. Anim. Sci. 74:2711-2718.