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Animal Nutrition and Feed Technology
Year : 2023, Volume : 23, Issue : 1
First page : ( 39) Last page : ( 49)
Print ISSN : 0972-2963. Online ISSN : 0974-181X.
Article DOI : 10.5958/0974-181X.2023.00004.5

Comparative assessment of organic and inorganic iron supplementation on performance, blood biochemistry, egg quality and egg iron concentration in laying hens

Kannan A.*, Prakash B., Paul S.S., Rao S.V. Rama, Raju M.V.L.N.

Poultry Nutrition LaboratoryICAR-Directorate of Poultry ResearchHyderabad-500030, India

*Corresponding author: akanna72@gmail.com

Online Published on 23 January, 2023.

Abstract

Kannan, A., Prakash, B., Paul, S.S., Rama Rao, S.V. and Raju, M.V.L.N. 2022. Comparative assessment of organic and inorganic iron supplementation on performance, blood biochemistry, egg quality and egg iron concentration in laying hens. Animal Nutrition and Feed Technology, 23: 39–49.

A study was conducted to investigate the effect of supplementing different levels of organic and inorganic iron (Fe) on layer performance, egg quality and production of designer eggs enriched with iron. A total of 245 White Leghorn layers at 62 weeks of age, were randomly assigned into seven groups of 35 hens with seven replications (five birds/replicate). A complete randomized design experiment was performed including control (basal diet), three levels of inorganic iron (ferrous sulphate at 100, 200 and 300 mg Fe/kg basal diet) and three levels of organic iron (ferrous proteinate at 100, 200 and 300 mg Fe/kg basal diet). Supplementation of inorganic and organic iron did not affect feed intake, hen day egg production, egg weight and most of the egg quality traits, however, improved (P<0.05) the eggshell strength. Two weeks after supplementation the Fe content in eggs started increasing and reached peak level at 5 to 6 weeks after which the levels stabilized. Inorganic Fe supplementation improved egg iron content by 20.4 to 35.3% and organic Fe by 32.87 to 42.44%. Supplementation of both organic and inorganic iron significantly (P<0.001) decreased serum triglyceride and total cholesterol levels. Also, supplementation of inorganic iron significantly (P<0.001) decreased serum calcium, phosphorus and total protein levels. It is concluded, that ferrous proteinate is more efficient than ferrous sulphate and 200 mg/kg Fe supplementation as ferrous proteinate is recommended for iron enrichment of eggs in White Leghorn layers without affecting the performance of layers and egg quality.

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Keywords

Blood biochemistry, Egg mineral, Egg quality, Iron, Laying hen, Performance.

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