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<p>With increased concerns over the welfare and the potential for higher production among the laying hens, studies are being carried out to extend the laying period to 100 weeks of age and achieving the production of&#xa0;500 eggs. The major challenge in this extended laying phase is the maintenance of egg shell quality. The quality of egg shell has been inversely related to the stage of the egg production. An experiment on extending the laying period to 100 weeks was carried out on 60 white leghorn hens and to assess the effect of 25-(OH) cholecalciferol supplementation on the egg production and egg shell quality in laying hens. The birds were reared individually for 60 weeks under standard management conditions and subsequently, divided in to three groups (20 each) as control (basal diet), 35 and 70 ppb 25-(OH)&#xa0;cholecalciferol for the remaining 40 weeks of experiment. The total number of eggs produced during this 40 weeks period were higher in 70 ppb (250.93) group than the control (240.62) and 35 ppb (239.81) supplemented groups. Similarly, the total number of eggs produced during the 100 weeks laying period were 489.25, 487.68 and 499.24 in 0, 35 and 70 ppb supplemented groups, respectively. The supplementation of 25-(OH) cholecalciferol did not significantly (<i>P</i> &gt; 0.05) influence the egg shell weight and its thickness which are comparable among the groups. The supplementation of 70ppb of 25-(OH) cholecalciferol has resulted in higher net calcium secretion to the eggs per bird compared to the control. The target of producing 500 eggs with acceptable egg shell quality in 100 weeks laying period is achievable.</p>

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Effect of dietary supplementation of 25-(OH) cholecalciferol on egg production and shell quality in extended laying cycle

  • 期刊论文

  • 发表日期：

    2026年3月12日

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  • Marappan Gopi,
  • Venkata Hanumat Sastry Kochiganti,
  • Arumbackam Vijayarangam Elangovan,
  • Atul Purushottam Kolte,
  • Vaibhav Bhagwan Awachat,
  • Bagath Madiajagan,
  • Corbon David,
  • Jyotirmoy Ghosh,
  • Ravikiran Gorti,
  • Ippala Janardhan Reddy

摘要

With increased concerns over the welfare and the potential for higher production among the laying hens, studies are being carried out to extend the laying period to 100 weeks of age and achieving the production of 500 eggs. The major challenge in this extended laying phase is the maintenance of egg shell quality. The quality of egg shell has been inversely related to the stage of the egg production. An experiment on extending the laying period to 100 weeks was carried out on 60 white leghorn hens and to assess the effect of 25-(OH) cholecalciferol supplementation on the egg production and egg shell quality in laying hens. The birds were reared individually for 60 weeks under standard management conditions and subsequently, divided in to three groups (20 each) as control (basal diet), 35 and 70 ppb 25-(OH) cholecalciferol for the remaining 40 weeks of experiment. The total number of eggs produced during this 40 weeks period were higher in 70 ppb (250.93) group than the control (240.62) and 35 ppb (239.81) supplemented groups. Similarly, the total number of eggs produced during the 100 weeks laying period were 489.25, 487.68 and 499.24 in 0, 35 and 70 ppb supplemented groups, respectively. The supplementation of 25-(OH) cholecalciferol did not significantly (P > 0.05) influence the egg shell weight and its thickness which are comparable among the groups. The supplementation of 70ppb of 25-(OH) cholecalciferol has resulted in higher net calcium secretion to the eggs per bird compared to the control. The target of producing 500 eggs with acceptable egg shell quality in 100 weeks laying period is achievable.