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Effects of increasing supplementation of magnesium in diets on productive performance and eggshell quality of aged laying hens.
Biol Trace Elem Res. 2013 Jan; 151(1):38-42.BT

Abstract

Magnesium (Mg) concentrations in diets have been associated with performance and eggshell quality of laying hens, but the results have been inconclusive. In this experiment, the effects of increasing concentrations of dietary Mg on productive performance and eggshell quality of aged laying hens were evaluated. A total of 640 Hy-Line Brown laying hens of 72 weeks of age were randomly allotted to one of four dietary treatments with four replicates per treatment. A commercial-type basal diet containing 1.6 g/kg Mg was prepared, and three additional diets were prepared to contain 2.3, 2.6, or 3.0 g/kg Mg in diets by adding 1.0, 1.5, or 2.0 g of MgO to the basal diet. The diets were fed to hens ad libitum for 5 weeks. Results indicated that Mg concentrations in eggshells were increased (linear, P < 0.01) with increasing concentrations of Mg in diets. Increasing concentrations of Mg in diets decreased (linear and quadratic, P < 0.01) broken and shell-less egg production, but improved (linear, P < 0.05) eggshell strength. Feed intake was decreased (linear, P < 0.05) with the concentrations of Mg in diets, but hen-day egg production, egg weight, feed conversion ratio, and Haugh unit were not affected by increasing concentrations of Mg in diets. Hunter L* and a* values of eggshell were decreased (linear, P < 0.05) as the concentrations of Mg in diets increased. In conclusion, feeding aged laying hens with diets containing increasing concentrations of Mg up to 3.0 g/kg improves eggshell strength, but has no detrimental effects on laying performance.

Authors+Show Affiliations

Department of Animal Science and Technology, School of Bioresource and Bioscience, College of Natural Sciences, Chung-Ang University, Anseong-si, Gyeonggi-do, Republic of Korea.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23111950

Citation

Kim, Chan Ho, et al. "Effects of Increasing Supplementation of Magnesium in Diets On Productive Performance and Eggshell Quality of Aged Laying Hens." Biological Trace Element Research, vol. 151, no. 1, 2013, pp. 38-42.
Kim CH, Paik IK, Kil DY. Effects of increasing supplementation of magnesium in diets on productive performance and eggshell quality of aged laying hens. Biol Trace Elem Res. 2013;151(1):38-42.
Kim, C. H., Paik, I. K., & Kil, D. Y. (2013). Effects of increasing supplementation of magnesium in diets on productive performance and eggshell quality of aged laying hens. Biological Trace Element Research, 151(1), 38-42. https://doi.org/10.1007/s12011-012-9537-z
Kim CH, Paik IK, Kil DY. Effects of Increasing Supplementation of Magnesium in Diets On Productive Performance and Eggshell Quality of Aged Laying Hens. Biol Trace Elem Res. 2013;151(1):38-42. PubMed PMID: 23111950.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of increasing supplementation of magnesium in diets on productive performance and eggshell quality of aged laying hens. AU - Kim,Chan Ho, AU - Paik,In Kee, AU - Kil,Dong Yong, Y1 - 2012/11/01/ PY - 2012/09/20/received PY - 2012/10/22/accepted PY - 2012/11/1/entrez PY - 2012/11/1/pubmed PY - 2014/10/11/medline SP - 38 EP - 42 JF - Biological trace element research JO - Biol Trace Elem Res VL - 151 IS - 1 N2 - Magnesium (Mg) concentrations in diets have been associated with performance and eggshell quality of laying hens, but the results have been inconclusive. In this experiment, the effects of increasing concentrations of dietary Mg on productive performance and eggshell quality of aged laying hens were evaluated. A total of 640 Hy-Line Brown laying hens of 72 weeks of age were randomly allotted to one of four dietary treatments with four replicates per treatment. A commercial-type basal diet containing 1.6 g/kg Mg was prepared, and three additional diets were prepared to contain 2.3, 2.6, or 3.0 g/kg Mg in diets by adding 1.0, 1.5, or 2.0 g of MgO to the basal diet. The diets were fed to hens ad libitum for 5 weeks. Results indicated that Mg concentrations in eggshells were increased (linear, P < 0.01) with increasing concentrations of Mg in diets. Increasing concentrations of Mg in diets decreased (linear and quadratic, P < 0.01) broken and shell-less egg production, but improved (linear, P < 0.05) eggshell strength. Feed intake was decreased (linear, P < 0.05) with the concentrations of Mg in diets, but hen-day egg production, egg weight, feed conversion ratio, and Haugh unit were not affected by increasing concentrations of Mg in diets. Hunter L* and a* values of eggshell were decreased (linear, P < 0.05) as the concentrations of Mg in diets increased. In conclusion, feeding aged laying hens with diets containing increasing concentrations of Mg up to 3.0 g/kg improves eggshell strength, but has no detrimental effects on laying performance. SN - 1559-0720 UR - https://www.unboundmedicine.com/medline/citation/23111950/Effects_of_increasing_supplementation_of_magnesium_in_diets_on_productive_performance_and_eggshell_quality_of_aged_laying_hens_ L2 - https://dx.doi.org/10.1007/s12011-012-9537-z DB - PRIME DP - Unbound Medicine ER -