Nano-calcium carbonate: Effect on performance traits and egg quality in laying hens

Authors

  • A. Ramazani Ghara Department of Biology, Faculty of Sciences, University of Jiroft, Jiroft, Iran.
  • N. Ziaei Department of Animal Sciences, Faculty of Agriculture, University of Jiroft, Jiroft, Iran.
  • S. Ganjigohari Department of Animal Sciences, Faculty of Agriculture, University of Jiroft, Jiroft, Iran.
  • S. Tasharrofi Natural Resource and Agricultural Research and Education Center of Kerman, Kerman, Iran.
Abstract:

A ten-week trial was carried out to determine the effect of different levels of nano-calcium carbonate (NCC) on egg production performance and egg quality. A completely randomized experiment was designed comprising 6 treatments, each with 4 replicates of 5 hens. Groups 1 and 2 were fed diets containing 8.06% and 6.045% calcium carbonate (CC) as positive and negative control respectively. Groups 3, 4, 5 and 6 received diets with 4.03% CC plus 2.015, 1.01, 0.252 and 0.126% NCC respectively. Egg production at 32 wks of age was significantly reduced by the lowest dietary supplementation with NCC (T6) (P0.05). The lowest egg shape index was recorded for the birds fed T6 at 31 and 33 wks of age (P

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Journal title

volume 6  issue 1

pages  49- 56

publication date 2018-04-23

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