Using Threonine, Canthaxanthinand Sodium Sulphate for Improving Egg Production in Laying Hens after 40 weeks of age

Shamseldeen, Ahmed Alsayed

doi:10.21608/epsj.2025.86996.1175

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	Using Threonine, Canthaxanthinand Sodium Sulphate for Improving Egg Production in Laying Hens after 40 weeks of age
Articles in Press, Accepted Manuscript, Available Online from 19 May 2025
Document Type: Original Article
DOI: 10.21608/epsj.2025.86996.1175
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Author
Ahmed alsayed Shamseldeen
ANIMAL PRODUCTION RESEARCH INSTITUTE
Abstract
This study examines the hypothesis that threonine(THR),canthaxanthin (CAN)and sodium sulphate (SS) can improve the performance of commercial Lohmann Brown (LB) brown laying hens in late egg production period (44 – 56 wks).A total number of 120 hens at 44 weeks old from Lohmann Brown (LB) strain were equally divided into 8 groups with 5 replicates (3 hens each) and housed in wire cages.The experimental hens fed from 44 to 56 week of age the control diet without or with 2 g THR / kg diet , 3 ppm CAN, 2 g THR/ kg + 3ppm CAN, 5 g SS/kg, 2 g THR/ kg +5 g SS/kg, 3 ppm CAN+5 g SS/kg and 2 g THR/ kg+ 3 ppm CAN+5 g SS/kg .All feed additives used in this study numerically increased egg number (egg/hen/week) compared to hen fed control diet.The addition of THR+CAN+SS significantly increased egg mass /day by 8.10% compared to control diet. All feed additives used in this study increased egg shell thickness, serum total protein and antioxidants capacity compared to control diet.The mixture of three feed additives increased shell thickness by 15.15% compared to control diet. The mixture of THR+CAN+SS was the most successful additive in this study.
Keywords
Laying hens; egg production; threonine; canthaxanthin and sodium sulphate
Main Subjects
Chicken


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