Does the gradual increase in dietary zinc oxide supplementation can affect egg quality, serum indices, and productive performance of laying hens?

This study was conducted to evaluate the influence of increased supplementation of zinc oxide (ZnO) on performance, quality of egg, blood chemistry, and antioxidant ability in serum of laying chickens (Hisex Brown) reared from 22 to 34 weeks of age. Seventy-two 22-week-old laying hens (Hisex Brown)...

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Bibliographic Details
Published in:Tropical animal health and production 2020-03, Vol.52 (2), p.525-531
Main Authors: Abd El-Hack, M. E., Alagawany, M., Chaudhry, M. T., Saeed, M., Ahmad, E. A. M., El-Sayed, S. A. A.
Format: Article
Language:English
Subjects:
Antioxidants
Biomedical and Life Sciences
Chickens
Cholesterol
Diet
Dietary supplements
Levels
Life Sciences
Lipoproteins
Low density lipoprotein
Organic chemistry
Regular Articles
Triglycerides
Veterinary Medicine/Veterinary Science
Yolk
Zinc oxide
Zinc oxides
Zoology
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Summary:This study was conducted to evaluate the influence of increased supplementation of zinc oxide (ZnO) on performance, quality of egg, blood chemistry, and antioxidant ability in serum of laying chickens (Hisex Brown) reared from 22 to 34 weeks of age. Seventy-two 22-week-old laying hens (Hisex Brown) were haphazardly separated into 3 handling collections of 24 chickens (6 replicates per treatment and four laying hens per replicate). Dietary treatments included basal diet without zinc addition for control group while the 2nd and 3rd groups contained basal diet with 25 or 75 mg ZnO/kg diet. Results showed that the higher level of ZnO (75 mg ZnO/kg diet) elevated ( P  
ISSN:0049-4747
1573-7438
DOI:10.1007/s11250-019-02038-2