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Effects of δ-aminolevulinic acid and vitamin C supplementation on iron status, production performance, blood characteristics and egg quality of laying hens.
J Anim Physiol Anim Nutr (Berl). 2011 Aug; 95(4):417-23.JA

Abstract

An experiment was conducted to evaluate the effects of laying hen diets supplemented with δ-aminolevulinic acid (ALA) and vitamin C (VC) on productive performance, iron status and egg quality. A total of 252 Hy-line brown commercial laying hens were fed two levels of VC (0 and 500 mg/kg) and three levels of ALA (0, 5 and 10 mg/kg) in a 2 × 3 factorial arrangement from 57 to 63 weeks of age. Each treatment contained seven replicates with six hens in each replicate. Supplementation of the diet with both ALA and VC resulted in a significant increase in egg production during 4-6 weeks (p < 0.05). The haematocrit (HCT), total iron-binding capacity (TIBC), white blood cell (WBC), total protein and albumin concentrations were not affected by the dietary treatments. However, ALA and interactive effect of ALA and VC were observed to increase the RBC, haemoglobin and serum iron concentrations (p < 0.05). In addition, inclusion of both ALA and VC increased blood lymphocyte percentage in relation to hens not supplemented with ALA (p < 0.05). Moreover, single effect of ALA or VC improved (p < 0.05) the yolk colour unit and albumin height from 3 to 6 weeks. The egg shell colour was increased (p < 0.05) by the effect of ALA. The addition of VC also led to an increase (p < 0.05) of the Haugh unit at the end of the experiment. However, neither ALA, nor VC exerted an effect on egg weight, egg shell breaking strength or egg shell thickness. The results demonstrate that dietary ALA and VC supplementation can improve the iron status and egg quality of laying hens.

Authors+Show Affiliations

Department of Animal Resource & Science, Dankook University, Cheonan, Choongnam Korea.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

21039930

Citation

Wang, J P., et al. "Effects of Δ-aminolevulinic Acid and Vitamin C Supplementation On Iron Status, Production Performance, Blood Characteristics and Egg Quality of Laying Hens." Journal of Animal Physiology and Animal Nutrition, vol. 95, no. 4, 2011, pp. 417-23.
Wang JP, Lee JH, Jang HD, et al. Effects of δ-aminolevulinic acid and vitamin C supplementation on iron status, production performance, blood characteristics and egg quality of laying hens. J Anim Physiol Anim Nutr (Berl). 2011;95(4):417-23.
Wang, J. P., Lee, J. H., Jang, H. D., Yan, L., Cho, J. H., & Kim, I. H. (2011). Effects of δ-aminolevulinic acid and vitamin C supplementation on iron status, production performance, blood characteristics and egg quality of laying hens. Journal of Animal Physiology and Animal Nutrition, 95(4), 417-23. https://doi.org/10.1111/j.1439-0396.2010.01067.x
Wang JP, et al. Effects of Δ-aminolevulinic Acid and Vitamin C Supplementation On Iron Status, Production Performance, Blood Characteristics and Egg Quality of Laying Hens. J Anim Physiol Anim Nutr (Berl). 2011;95(4):417-23. PubMed PMID: 21039930.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of δ-aminolevulinic acid and vitamin C supplementation on iron status, production performance, blood characteristics and egg quality of laying hens. AU - Wang,J P, AU - Lee,J H, AU - Jang,H D, AU - Yan,L, AU - Cho,J H, AU - Kim,I H, Y1 - 2010/10/29/ PY - 2010/11/3/entrez PY - 2010/11/3/pubmed PY - 2011/11/10/medline SP - 417 EP - 23 JF - Journal of animal physiology and animal nutrition JO - J Anim Physiol Anim Nutr (Berl) VL - 95 IS - 4 N2 - An experiment was conducted to evaluate the effects of laying hen diets supplemented with δ-aminolevulinic acid (ALA) and vitamin C (VC) on productive performance, iron status and egg quality. A total of 252 Hy-line brown commercial laying hens were fed two levels of VC (0 and 500 mg/kg) and three levels of ALA (0, 5 and 10 mg/kg) in a 2 × 3 factorial arrangement from 57 to 63 weeks of age. Each treatment contained seven replicates with six hens in each replicate. Supplementation of the diet with both ALA and VC resulted in a significant increase in egg production during 4-6 weeks (p < 0.05). The haematocrit (HCT), total iron-binding capacity (TIBC), white blood cell (WBC), total protein and albumin concentrations were not affected by the dietary treatments. However, ALA and interactive effect of ALA and VC were observed to increase the RBC, haemoglobin and serum iron concentrations (p < 0.05). In addition, inclusion of both ALA and VC increased blood lymphocyte percentage in relation to hens not supplemented with ALA (p < 0.05). Moreover, single effect of ALA or VC improved (p < 0.05) the yolk colour unit and albumin height from 3 to 6 weeks. The egg shell colour was increased (p < 0.05) by the effect of ALA. The addition of VC also led to an increase (p < 0.05) of the Haugh unit at the end of the experiment. However, neither ALA, nor VC exerted an effect on egg weight, egg shell breaking strength or egg shell thickness. The results demonstrate that dietary ALA and VC supplementation can improve the iron status and egg quality of laying hens. SN - 1439-0396 UR - https://www.unboundmedicine.com/medline/citation/21039930/Effects_of_δ_aminolevulinic_acid_and_vitamin_C_supplementation_on_iron_status_production_performance_blood_characteristics_and_egg_quality_of_laying_hens_ L2 - https://doi.org/10.1111/j.1439-0396.2010.01067.x DB - PRIME DP - Unbound Medicine ER -