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Responses of domestic fowl to excess iodine: a review

Published online by Cambridge University Press:  09 March 2007

P. D. Lewis
P. D. Lewis*
Affiliation:
Animal and Poultry Science, School of Agricultural Sciences and Agribusiness, University of Natal, Private Bag X01, Scottsville 3209, South Africa
*
*Corresponding author: Dr Peter Lewis, present address, Northcot, Cowdown Lane, Goodworth Clatford, Andover SP11 7HG, Hants., UK, fax +44 1264 350556, email [email protected]
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Abstract

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Typically, poultry diets contain 1–2 mg I/kg, but higher concentrations are sometimes used to enhance the I content of eggs. In addition to an increased deposition of I in the yolk, other often adverse responses occur, especially at exceptionally high concentrations. Excess I in grower diets can prevent sexual maturation in male and female fowl, and in layer diets will progressively reduce egg production until, by about 2500 mg I/kg diet, ovulation is inhibited and egg production ceases. Most I accumulates in the thyroid gland, and it is likely that the mechanism responsible for these reproductive disorders involves a modification of thyroid hormone activity. Simultaneous with the declining rate of lay, feed intake declines, egg weight and yolk-cholesterol contents decrease and body weight increases. Whereas fertility is unaffected in female breeders, hatch of fertile eggs is reduced, hatch time extended and embryonic mortality and dead-in-shell proportions increased. In contrast, male fertility is decreased because of an increased incidence of dead spermatozoa, although hatchability of eggs from normally fed hens is unaffected. All reproductive variables, together with feed intake and body weight, are normalised within about 7 d of returning to a diet with normal I levels. Excess I suppresses growth in meat-type chickens, but does not affect feed conversion efficiency. There are transient increases in plasma I and cholesterol concentration during excess I intake in all types of bird. The evidence for varying responses to different I sources is equivocal, but the consensus is that source is probably not important.

Keywords

CholesterolIodineMinerals
Type
Review article
Information
British Journal of Nutrition , Volume 91 , Issue 1 , January 2004 , pp. 29 - 39
Copyright
Copyright © The Nutrition Society 2004

References

Ammerman, CB, Arrington, LR, Warnick, AC, Edwards, JL, Shirley, RL & Davis, GK (1964) Reproduction and lactation in rats fed excessive iodine. J Reprod 84, 107–112.Google ScholarPubMed
Arrington, LR, Santa Cruz, RA, Harms, RH & Wilson, HR (1967) Effects of excess dietary iodine upon pullets and laying hens. J Nutr 92, 325–330.CrossRefGoogle ScholarPubMed
Arrington, LR, Taylor, RN, Ammerman, CB & Shirley, RL (1965) Effects of excess dietary iodine upon rabbits, hamsters, rats and swine. J Nutr 87, 394–398.CrossRefGoogle ScholarPubMed
Asmundson, VS (1931) Effect of hormones on the formation of the hen's egg. Poult Sci 10, 157.CrossRefGoogle Scholar
Asmundson, VS, Almquist, HJ & Klose, AA (1936) Effect of different forms of iodine on laying hens. J Nutr 12, 1–14.CrossRefGoogle Scholar
Babu, M, Gajendran, K, Seriff, FR & Srinivadsan, G (1994) Effect of iodised water on layer performance. Indian Vet J 3, 304.Google Scholar
Brown, RH (1988) Egg that may lower cholesterol unveiled. Feedstuffs, 9 December, pp. 1 and 35.Google Scholar
Cao, SF, Yang, L, Cheng, MR, Chen, LY & Chen, KQ (1999) Effects of feeding high-iron and high-iodine diet to hens on the iron and iodine content in eggs and egg quality. J Shanghai Agric Coll 17, 248–254.Google Scholar
Christensen, VL & Ort, JF (1990) Influence of diet-mediated maternal thyroid alterations on functional properties of turkey eggs. Poult Sci 69, 1576–1581.CrossRefGoogle ScholarPubMed
Christensen, VL & Ort, JF (1991) Iodine toxicity in Large White turkey breeder hens. Poult Sci 70, 2402–2410.CrossRefGoogle ScholarPubMed
Dawson, A, King, VM, Bentley, GE & Ball, GF (2001) Photoperiodic control of seasonality in birds. J Biol Rhythms 16, 365–380.CrossRefGoogle ScholarPubMed
Gershenfeld, L & Witlin, B (1950) Iodine as an antiseptic. Ann NY Acad Sci 53, 172–182.CrossRefGoogle ScholarPubMed
Hutt, FB (1930) Note on the effect of different doses of thyroid on the fowl. J Exp Biol 7, 1.CrossRefGoogle Scholar
Ishikawa, T & Kamimae, H (1980) Method for producing eggs containing a high amount of iodinated amino acids. United States Patent Application no. 922,581.Google Scholar
Kan, DY, Wu, ZF & Song, L (1995) Effect of iodine levels on laying performance of layers. Chin JAnim Sci 1, 28.Google Scholar
Kaufmann, S, Wolfram, G, Delange, F & Rambeck, WA (1998) Iodine supplementation of laying hen feed: a supplementary measure to eliminate iodine deficiency in humans?. Z Ernahrungswiss 3, 288–293.Google Scholar
Kroupova, V, Kratochvil, P, Kaufmann, S, Kursa, J & Travnicek, J (1998) Metabolic effects of giving additional iodine to laying hens. Vet Med (Praha) 7, 207–212.Google Scholar
Kroupova, V, Travnicek, J, Kursa, J, Kratochvil, P & Krabacova, I (1999) Iodine content in egg yolk during excessive intake by laying hens. Czech J Anim Sci 44, 369–376.Google Scholar
Leach, RM & Nesheim, MC (1963) Studies on chloride deficiency in chicks. J Nutr 81, 193–199.CrossRefGoogle ScholarPubMed
Leeson, S & Summers, JD (2001) Minerals – Iodine. Scott's Nutrition of the Chicken, 4th ed. 408–412. Guelph, Ont.: University Books.Google Scholar
Lewis, PD, Perry, GC & Morris, TR (1994) Effect of breed, age and body weight at sexual maturity on egg weight. Br Poult Sci 35, 181–182.Google Scholar
Lien, RJ & Siopes, TD (1989) Effects of thyroidectomy on egg production, molt, and plasma thyroid hormone concentrations of turkey hens. Poult Sci 68, 1126–1132.CrossRefGoogle ScholarPubMed
Lien, RJ & Siopes, TD (1991) Influence of thyroidectomy on reproductive responses of male domestic turkeys ( Meleagris gallopavo ). Br Poult Sci 32, 405–415.CrossRefGoogle ScholarPubMed
Marcilese, NA, Harms, RH, Valsecchi, RM & Arrington, LR (1968) Iodine uptake by ova of hens given excess iodine and effect upon ova development. J Nutr 94, 117–120.CrossRefGoogle ScholarPubMed
Mathe, D & Chevallier, F (1976) Effects of the thyroid state on cholesterol metabolism in the rat. Biochim Biophys Acta 441, (1) 155–164.CrossRefGoogle ScholarPubMed
May, JD (1976) Dietary iodine effect on plasma iodine concentration. Poult Sci 55, 1599.Google Scholar
May, JD (1980) Effect of dietary thyroid hormone on growth and feed efficiency of broilers. Poult Sci 59, 888–892.CrossRefGoogle ScholarPubMed
May, JD & Vardaman, TH (1978) Effect of a high level of dietary iodine on resistance of broilers to Mycoplasma synoviae. Poult Sci 57, 65–69.CrossRefGoogle ScholarPubMed
Mellen, WJ & Wentworth, BC (1962) Observations on radiothyroidectomized chickens. Poult Sci 41, 134–141.CrossRefGoogle Scholar
Pena, HG, Barth, KM, Kessler, WV, Plumlee, MP & Christian, JE (1967) Alteration of the incorporation of iodine-131 in the chicken egg. Poult Sci 46, 426–429.CrossRefGoogle Scholar
Perdomo, JT, Harms, RH & Arrington, LR (1966) Effect of dietary iodine upon egg production, fertility and hatchability. Proc Soc Exp Biol Med 122, 758–760.CrossRefGoogle ScholarPubMed
Perry, GC, Lewis, PD & Hannagan, MJ (1989) Iodine supplementation from two sources and its effect on egg output. Br Poult Sci 30, 973–974.Google Scholar
Perry, GC, Lewis, PD & Hannagan, MJ (1990) Responses of the laying hen to dietary iodine supplementation. Proceedings of the 8th European Poultry Conference, vol. 1, pp. 384–387. Barcelona: Spanish Branch, World's Poultry Science Association.Google Scholar
Praharaj, NK, Rao, SVR, Raju, MVLN, Chawak, MM, Mishra, SK & Mohapatra, SC (1994) Combined feeding of zinc, iodine and salt-free diet for inducing moult and its effect on subsequent performance of layer. Indian J PoultSci 2, 142–145.Google Scholar
Proudman, JA & Siopes, TD (2002) Relative and absolute photorefractoriness in turkey hens: profiles of prolactin, thyroxine, and triiodothyronine early in the reproductive cycle. Poult Sci 81, 1218–1223.CrossRefGoogle ScholarPubMed
Ringer, RK (1976) Thyroids. In Avian Physiology, pp. 349–358 [Sturkie, PD, editor]. New York: Springer-Verlag.Google Scholar
Roland, DA, McCready, ST, Stonerock, RH & Harms, RH (1977) Hypercalcemic effect of potassium iodide on serum calcium in domestic fowl. Poult Sci 56, 1310–1314.CrossRefGoogle ScholarPubMed
Rosenberg, LL, Goldman, M, LaRoche, G & Dimick, MK (1964) Thyroid function in rats and chickens. Equilibriation of injected iodide with existing thyroidal iodine in Long-Evans rats and White Leghorn chickens. Endocrinology 74, 212.CrossRefGoogle Scholar
Rys, R, Wir-Konas, E, Pyska, H, Kuchta, M & Pietras, M (1997) Changes in egg iodine concentration in three hen strains in relation to iodine level in diets. Roczniki Naukowe Zootechniki 24, 229–242.Google Scholar
Scott, ML, Nesheim, MC & Young, RJ (1982) Essential elements. In Nutrition of the Chicken, pp. 277–382. Ithaca, NY: ML Scott and Associates.Google Scholar
Siopes, TD (1997) Transient hypothyroidism reinstates egg laying in turkey breeder hens: termination of photorefractoriness by propylthiouracil. Poult Sci 76, 1776–1782.CrossRefGoogle Scholar
Travnicek, J, Kroupova, V, Kratochvil, P & Krabacova, I (1999) The effect of excessive iodine intake on the histology of the thyroid gland in layers. Vet Med (Praha) 6, 177–182.Google Scholar
Travnicek, J, Kroupova, V & Kursa, J (2000) The effects of excessive iodine intake on the activity of leukocytes and the level of plasmatic proteins in laying hens. Sci Agric Bohemica 4, 273–284.Google Scholar
Wheeler, RS & Hoffman, E (1950) The etiology of goiter in chicks from thyroprotein-fed hens; negative role of inorganic iodide. Poult Sci 29, 306–307.CrossRefGoogle Scholar
Wilder, OHM, Bethke, RM & Record, PR (1933) The iodine content of hen's eggs as affected by the ration. J Nutr 6, 407–412.CrossRefGoogle Scholar
Wilson, HR, Arrington, LR & Harms, RH (1968) High levels of dietary iodine for delaying sexual maturity of egg production type pullets. Poult Sci 47, 1535–1539.CrossRefGoogle Scholar
Wilson, HR, Fry, JL, Harms, RH & Arrington, LR (1967) Performance of hens molted by various methods. Poult Sci 46, 1406–1412.CrossRefGoogle ScholarPubMed
Wilson, HR & Harms, RH (1972) High levels of dietary iodine and sexual maturity in males. Poult Sci 51, 742–746.CrossRefGoogle ScholarPubMed
Wilson, HR, Rowland, LO Jr (1970) Reproductive characteristics in cockerels fed a high level of iodine. Poult Sci 49, 804–808.CrossRefGoogle Scholar
Yang, L, Cao, SF, Cheng, MR, Chen, LY & Chen, KQ (2001) Effects of iron, zinc, iodine and selenium levels in rations on activities of metabolic enzymes of layers and egg quality. J Huazhong Agric Univ 20, 449–453.Google Scholar
Yue, WB & Kang, JQ (1995) Effects of a high-iodine diet on performance, metabolism and egg quality in layers. Acta Vet Zootech Sin 26, 18–22.Google Scholar