Materials and Methods

• 240 Hy Line layers of age, 64 weeks old were distributed in four treatments , each with 5 replications per treatment and 12 layres per repetitions.
• Free access of water and normal layer handling methods were used

Treatments:

• T1) Control diet with 15% protein and low level of inorganic phosphorous (Pi) and Calcium (Ca), according to normal levels used in research
• T2) Same control diet, reformulated (Less 0.1% of Pi y Ca).
• T3) Same reformulated (T2) plus de addition of Phytex 500™ (100 g/ton).
• T4) Commercial diet with 17.5% proteín and high level of Pi y Ca.

Trial

The trial period was 35 days.
The following parameters were measured:

• Percentage egg production
• Feed consumption
• Feed conversion
• Egg mass
• Egg thickness
• Cost / benefit ratio

The results are shown in the following slide.

Response in Egg Production to the Use of Phytex 500™ (Layers - Hy line)

P<0.01


Response in Egg Weight to the use of Phytex 500™ (Layers - Hy line)

P<0.01


Response in feed consumption to the use of Phytex 500™ (Layers- Hy line)

P<0.01


Response in feed conversion with the use of Phytex 500™ (Hence - Hy line)

P<0.01


Response in Egg Mass to the use of Phytex 500™ (Hence- Hy line)

P<0.01










Economic analysis.


Diet with Phytex 500™ represents 10.7% less, vs. Commercial diet


Comparative Egg Production Cost with the use of Phytex 500™





Total Phosphorous and Phytic P in Feed Ingredients




Conclusion

• Phytex 500™ can substitute the addition of 0.1% phosphorous and calcium in layer diets without affecting egg production parameters.
  
• The results obtained with the addition of Phytex 500 are in accordance with results reported by other researchers with other phytases.