• Home
  • Browse
    • Current Issue
    • By Issue
    • By Author
    • By Subject
    • Author Index
    • Keyword Index
  • Journal Info
    • About Journal
    • Aims and Scope
    • Editorial Board
    • Publication Ethics
    • Peer Review Process
  • Guide for Authors
  • Submit Manuscript
  • Contact Us
 
  • Login
  • Register
Home Articles List Article Information
  • Save Records
  • |
  • Printable Version
  • |
  • Recommend
  • |
  • How to cite Export to
    RIS EndNote BibTeX APA MLA Harvard Vancouver
  • |
  • Share Share
    CiteULike Mendeley Facebook Google LinkedIn Twitter
Egyptian Poultry Science Journal
arrow Articles in Press
arrow Current Issue
Journal Archive
Volume Volume 45 (2025)
Volume Volume 44 (2024)
Volume Volume 43 (2023)
Volume Volume 42 (2022)
Volume Volume 41 (2021)
Volume Volume 40 (2020)
Volume Volume 39 (2019)
Volume Volume 38 (2018)
Volume Volume 37 (2017)
Issue Issue 4
Issue Issue 3
Issue Issue 2
Issue Issue 1
Volume Volume 36 (2016)
Volume Volume 35 (2015)
Volume Volume 34 (2014)
elsherif, H. (2017). IMPACT OF VITAMIN A SUPPLEMENTATION BEFORE AND DURING EARLY EGG PRODUCTION ON LAYING HEN PERFORMANCE. Egyptian Poultry Science Journal, 37(4), 1203-1215. doi: 10.21608/epsj.2017.5607
hany mohamed elsherif. "IMPACT OF VITAMIN A SUPPLEMENTATION BEFORE AND DURING EARLY EGG PRODUCTION ON LAYING HEN PERFORMANCE". Egyptian Poultry Science Journal, 37, 4, 2017, 1203-1215. doi: 10.21608/epsj.2017.5607
elsherif, H. (2017). 'IMPACT OF VITAMIN A SUPPLEMENTATION BEFORE AND DURING EARLY EGG PRODUCTION ON LAYING HEN PERFORMANCE', Egyptian Poultry Science Journal, 37(4), pp. 1203-1215. doi: 10.21608/epsj.2017.5607
elsherif, H. IMPACT OF VITAMIN A SUPPLEMENTATION BEFORE AND DURING EARLY EGG PRODUCTION ON LAYING HEN PERFORMANCE. Egyptian Poultry Science Journal, 2017; 37(4): 1203-1215. doi: 10.21608/epsj.2017.5607

IMPACT OF VITAMIN A SUPPLEMENTATION BEFORE AND DURING EARLY EGG PRODUCTION ON LAYING HEN PERFORMANCE

Article 13, Volume 37, Issue 4, December 2017, Page 1203-1215  XML PDF (753.37 K)
Document Type: Original Article
DOI: 10.21608/epsj.2017.5607
View on SCiNiTO View on SCiNiTO
Author
hany mohamed elsherif
Dep. of Anim. Prod., Facul.of Agric., Cairo Univ., 12613, Giza, Egypt
Abstract
The effects of dietary vitamin A (Vit. A) supplementation before and during early egg production on productive performance, egg quality, and economical efficiency of Lohmann brown laying hens were studied. In this experiment, a total number of 375 hens 16 wks of age were fed a basal diet supplemented with 10,000 (control); 20,000, 30,000; 40,000 or 50,000 IU Vit. A/kg diet. Each dietary treatment was randomly divided to 5 replicates with 15 birds each. Water and feed in mash form were offered ad-libitum, under a total of 16 hrslight/day regimen during the experimental period. Birds were reared in clean batteries under similar conditions up to 30wks of age.
The results indicated that egg production, egg mass and feed conversion ratio (FCR) significantly improved (p<0.05) with vitamin A supplementation. Groups received 30,000; 40,000 or 50,000 IU Vit. A/kg diet showed improvement egg production% at peak production period compared with groups received which 10,000 or 20,000 IU Vit. A/kg. Neither external nor internal egg quality parameters were affected by Vit. A supplementation except yolk index that was significantly decreased with increasing Vit. A level in the diet. Hens received 20000 IU Vit. A/kg diet showed the better relative economical efficiency compared those received the other levels. It could be concluded that, although the supplementation of 50000 IU Vit. A/kg diets before and during the early egg production improved laying hen performance, the hens received 20000 IU Vit. A/kg diet showed the better relative economical efficiency.
Keywords
Vitamin A – Performance – Laying hens
Statistics
Article View: 225
PDF Download: 582
Home | Glossary | News | Aims and Scope | Sitemap
Top Top

Journal Management System. Designed by NotionWave.