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Effects of supplementary iodine on the performance and egg traits of laying hens.
Br Poult Sci. 2004 Aug; 45(4):499-503.BP

Abstract

1. This experiment was carried out to determine the effects of dietary iodine supplementation on the performance and egg traits of laying hens. A total of 600 SHSY type brown layers aged 21 weeks of age were chosen at random from a large flock. They were randomly distributed into 30 pens at 20 hens per pen. Each treatment comprised 6 replicates of 20 layers in groups of 5 birds. The diets were supplemented with 0, 3, 6, 12 and 24 mg/kg iodine as calcium iodate. The experimental period lasted 30 weeks. 2. There were no significant differences among the groups in body weight, food consumption, egg production, food consumption per kg eggs, eggshell index, eggshell breaking strength, shell thickness or egg yolk index. 3. Supplementation of the diet with 12 mg/kg iodine increased food consumption per dozen eggs compared to the groups fed on diets supplemented with 0 and 6 mg/kg iodine. 4. Egg weight was less in groups fed on diets supplemented with 12 and 24 mg/kg iodine than in the group receiving no iodine supplementation. 5. Iodine supplementation to provide 12 and 24 mg/kg reduced egg albumen index and egg Haugh units. 6. There were no significant differences among the groups in egg cholesterol and egg yolk cholesterol contents. 7. The iodine concentrations in egg yolk, egg albumen and whole egg increased with increased iodine supplementation. 8. As a result, the 3 and 6 mg/kg iodine supplementation of diet could be used to enrich the eggs with iodine without any adverse effect on performance and egg traits.

Authors+Show Affiliations

Ankara University, Faculty of Veterinary Medicine, Department of Animal Nutrition, Ankara, Turkey. yalcin@veterinary.ankara.edu.trNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15484724

Citation

Yalçin, S, et al. "Effects of Supplementary Iodine On the Performance and Egg Traits of Laying Hens." British Poultry Science, vol. 45, no. 4, 2004, pp. 499-503.
Yalçin S, Kahraman Z, Yalçin S, et al. Effects of supplementary iodine on the performance and egg traits of laying hens. Br Poult Sci. 2004;45(4):499-503.
Yalçin, S., Kahraman, Z., Yalçin, S., Yalçin, S. S., & Dedeoğlu, H. E. (2004). Effects of supplementary iodine on the performance and egg traits of laying hens. British Poultry Science, 45(4), 499-503.
Yalçin S, et al. Effects of Supplementary Iodine On the Performance and Egg Traits of Laying Hens. Br Poult Sci. 2004;45(4):499-503. PubMed PMID: 15484724.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of supplementary iodine on the performance and egg traits of laying hens. AU - Yalçin,S, AU - Kahraman,Z, AU - Yalçin,S, AU - Yalçin,S S, AU - Dedeoğlu,H E, PY - 2004/10/16/pubmed PY - 2004/12/16/medline PY - 2004/10/16/entrez SP - 499 EP - 503 JF - British poultry science JO - Br. Poult. Sci. VL - 45 IS - 4 N2 - 1. This experiment was carried out to determine the effects of dietary iodine supplementation on the performance and egg traits of laying hens. A total of 600 SHSY type brown layers aged 21 weeks of age were chosen at random from a large flock. They were randomly distributed into 30 pens at 20 hens per pen. Each treatment comprised 6 replicates of 20 layers in groups of 5 birds. The diets were supplemented with 0, 3, 6, 12 and 24 mg/kg iodine as calcium iodate. The experimental period lasted 30 weeks. 2. There were no significant differences among the groups in body weight, food consumption, egg production, food consumption per kg eggs, eggshell index, eggshell breaking strength, shell thickness or egg yolk index. 3. Supplementation of the diet with 12 mg/kg iodine increased food consumption per dozen eggs compared to the groups fed on diets supplemented with 0 and 6 mg/kg iodine. 4. Egg weight was less in groups fed on diets supplemented with 12 and 24 mg/kg iodine than in the group receiving no iodine supplementation. 5. Iodine supplementation to provide 12 and 24 mg/kg reduced egg albumen index and egg Haugh units. 6. There were no significant differences among the groups in egg cholesterol and egg yolk cholesterol contents. 7. The iodine concentrations in egg yolk, egg albumen and whole egg increased with increased iodine supplementation. 8. As a result, the 3 and 6 mg/kg iodine supplementation of diet could be used to enrich the eggs with iodine without any adverse effect on performance and egg traits. SN - 0007-1668 UR - https://www.unboundmedicine.com/medline/citation/15484724/Effects_of_supplementary_iodine_on_the_performance_and_egg_traits_of_laying_hens_ L2 - http://www.tandfonline.com/doi/full/10.1080/00071660412331286208 DB - PRIME DP - Unbound Medicine ER -