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This is to certify that your paper entitled «Does the Type of Cereal Grain in the Diet Influence Egg Quantity and Quality Measures of Laying Hens Without the Use of Carbohydrases?» was indexed with 8 pages, in the CIVILICA citation database, code COI:JR_PSJG-13-2_011, after evaluation and approval of the referees of the "Poultry Science Journal Vol 13, Issue 2 , Year 2025.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above journal and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.