Effects of 1α-hydroxycholecalciferol on Laying Hens
Author Information
Author(s): Ghaderi Nik Maryam, Mahdavi Reza, Ghazi Shahab, Gholami Kourosh
Primary Institution: Department of Animal Science, College of Agriculture and Natural Resources, Razi University, Kermanshah, Iran
Hypothesis
Does dietary supplementation with 1α-hydroxycholecalciferol improve performance, eggshell quality, serum metabolites, jejunal morphology, and bone characteristics in laying hens during late production?
Conclusion
Supplementation with 1α-hydroxycholecalciferol enhances egg production, eggshell thickness, and bone quality while reducing abnormal eggs in aged laying hens.
Supporting Evidence
- 1α-hydroxycholecalciferol increased egg production and gross revenue.
- Supplementation reduced the incidence of abnormal eggs.
- Eggshell thickness and strength improved with higher levels of 1α-hydroxycholecalciferol.
- Serum calcium and albumin levels increased with supplementation.
- Tibia strength and calcium content improved in hens receiving 1α-hydroxycholecalciferol.
Takeaway
Adding a special vitamin to the food of older hens helps them lay more eggs and have stronger eggshells.
Methodology
The study used a completely randomized design with 180 hens divided into five treatment groups, each receiving different levels of 1α-hydroxycholecalciferol.
Potential Biases
Potential bias in treatment allocation and measurement of outcomes due to the design of the study.
Limitations
The study focused only on one breed of laying hens and specific dietary conditions, which may limit the generalizability of the results.
Participant Demographics
Lohman LSL-Lite laying hens, aged 110 weeks.
Statistical Information
P-Value
0.002
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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