Effect of inorganic and organic sources of phosphorous and phytase enzyme on production performance, egg quality and true and apparent ileal digestibility of phosphorous in laying hens

Heydar Shaker Al-Mousavi, Abdollah; Moradi, Soudabeh; Torki, Mehran; Khatibjoo, Ali; Abdollahi, Reza

doi:10.22059/jap.2025.383395.623805

Document Type : Research Paper

Authors

¹ Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah, Iran. E-mail: abdullahshaher290@gmail.com

² Corresponding Author, Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah, Iran. E-mail: s.moradi@razi.ac.ir

³ Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah,Iran. E-mail: torki@razi.ac.ir

⁴ Department of Animal Science, Faculty of Agriculture, Ilam University, Ilam, Iran. E-mail: a.khatibjoo@ilam.ac.ir

⁵ Massey University, Palmerston North, NewZealand. E-mail: M.Abdollahi@massey.ac.nz

https://doi.org/10.22059/jap.2025.383395.623805

Abstract

Objective: This experiment was conducted to evaluate the effect of different phosphorus sources and phytase supplementation on performance, egg quality, and the digestibility coefficients of P in mono and dicalcium phosphate and meat and bone meal in commercial laying hens.
Methods: A total of 288 lohmann laying hens (LSL-Lite) was used in a completely randomized design with 3×2 factorial arrangements with 6 treatments, 8 replicates and 6 birds in each from 50 to 62 wk of age. Experimental treatments included: three sources of P including mono- and di calcium phosphate (MCP and DCP) and meat and bone meal (MBM) with and without phytase enzyme (400 FTU/kg). Apparent and true ileal digestibility (AIDP and TIDP), as well as apparent retention of P (TTDP), were measures using semi-purified corn-based diets.
Results: The true ileal digestibility coefficients of P in MCP, DCP and MBM were 43.4, 44.0, and 40.7 % respectively, in laying hens at 62 weeks of age, and the AIDP, and TIDP of MCP and DCP was greater than that of MBM. AIDP and TIDP for DCP and MCP were greter than that of MBM, and phytase supplementation increased P digestibility (P < 0.05), however, TTDP in 62-week-old laying hens in MBM was numerically higher than those of DCP and MCP. The interaction of P source and phytase on egg production, egg weight, egg mass and feed intake were significant. The greatest percentage of egg production was observed in hens fed with DCP plus phytase and MBM plus phytase, which was significantly more than those of DCP and MCP plus phytase treatments (P<0.05). Phytase supplementation in DCP containing diets increased egg production rate and egg weight (P<0.05). Compared to other groups, the greatest feed intake was observed in the birds fed MCP diets without and with phytase (P<0.01). The best egg weight was observed in birds fed MCP, which was significantly different from those of DCP and MBM diets (P<0.05). The egg mass in birds fed MCP and DCP with phytase was lower than in other experimental treatments (P<0.05). Compared to a diet without phytase, the addition of phytase and MBM, the inclusion of DCP and MCP in thr diet improved yolk color (P<0.05).
Conclusions: Inconclusion, using DCP and MCP was more effective than MBM and phytase inclusion has impact on P digestibility and egg production in DCP and MBM containing diets.

Keywords

References

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Journal of Animal Production, Print ISSN: 2008-6776., Online ISSN: 2382-994X

Effect of inorganic and organic sources of phosphorous and phytase enzyme on production performance, egg quality and true and apparent ileal digestibility of phosphorous in laying hens

References

References

Volume 27, Issue 3
October 2025
Pages 335-350

Effect of inorganic and organic sources of phosphorous and phytase enzyme on production performance, egg quality and true and apparent ileal digestibility of phosphorous in laying hens

References

References

Volume 27, Issue 3October 2025Pages 335-350

Volume 27, Issue 3
October 2025
Pages 335-350