In this manuscript, the authors have investigated the effect of using different levels of probiotic " Aspergillus awamori " on the health and disease resistance of a growing rabbit. The topic of the study is interesting. But, the manuscript needs extensive revisions and organization to fit for publication as follows:
General comments:
1. The manuscript contains many grammatical, typographic, and styling errors. English editing of the manuscript is highly recommended.
2. In all tables, it is better to express the probiotic used as mg/kg (0,50,100, and 1500). Also, add a column containing P-value. Importantly, describe all abbreviations used in the footnotes of the tables.
3. The references need to be reformatted according to the style of the journal as the journal names are missed in all references.
Specific comments:
- Introduction: The authors talk generally on probiotics in detail more than needed while describing the Aspergillus awamori very briefly. It is highly recommended to reframe the introduction by presenting a brief description of the probiotic as a group then give a detailed description of the Aspergillus awamori source, biological activity, mode of action, ….etc.
3. Material and methods:
- Line 74: clarify the number of males and females.
- Line 77: replace "lipid content" with "energy content".
- Line 81: replace (NRC, 1977) with (De Blas & Mateos, 2010).
- Line 85: what is meant by the performance index?
- Line 87-98: please, delete it.
- In the digestibility trial: how the authors used similar weights while the final weights are different among the groups? Also, what are the numbers of days of faces collection?
- Line 109: nutritive values data is missed in the results. Either delete it or add it to the results section.
- Table 1: according to the NRC, the digestible energy required for the growing rabbit is 2500 kcal/kg. Thus, why the authors formulated the ration with low digestible energy (2412 kcal/kg)?. I think NRC 1997 is NRC 1977, please revise. Also, the add equation used for calculating digestible energy in footnotes.
- Table 2: express the weights in g, not kg.
- Table 3: the values are abnormal. I think there is an error in the calculation. Please, revise the data with the statistical sheet. Also, add the dry matter and organic matter digestibility and remove the ash.
- Table 4: there is an error in the calculation of the values of MCV, MCH, and MCHC. Please, revise and add the equations used in the materials and methods section.
- Figures 1 and 3: it is better to group the columns by parameters, not Aspergillus awamori concentrations. Also, add the unit on the Y-axis.

Despite the manuscript has been somewhat improved but many concerns still need to be addressed as follows:
1. The authors used many references for fish studies while the study in rabbits. Thus, it is highly recommended to replace it with references in rabbit studies.
2. Title: add nutrient digestibility.
3. Abstract: the experimental design should be clearly described.
4. Keywords: it is highly recommended to use words other than those used in the title.
5. Line 72: revise the standard error value as it does not match with table 2
6. Line 73: replace 2.2%with 2611 kcal.
7. Line 77: remove "the work of".
8. Lines 78 and 82: add the equations.
9. Line 104: Have the feces been collected for 14 days? Please clarify the duration.
10. Results:
- The levels are written wrong in the whole section. Please, revise.
- Table 1: the digestible energy should 2611 not 2411 according to the equation used by the author.
- Uniform "fiber" or "fibre"
- All values in the tables should be uniformed to two significant numbers (e.g. 7 should be 7.00).
- Table 2: bodyweight should be "final body weight".
11. Line 141: replace "average" with "final".
12. Line 143: revise your results.
13. Discussion
- Lines 184-190: clarify how Aspergillus awamori could increase the lipid, fiber, and protein digestibility.
- Lines 191-198: clarify how Aspergillus awamori could increase the length and villi thickness.
- Lines 206 -210: remove as the cortisol has not been estimated.
- Lines 211-212: clarify how Aspergillus awamori could increase the total protein.
- Line 222-232: clarify how Aspergillus awamori improve antioxidant status.

The authors adequately responded to all comments and performed all required modifications.

All comments have been addressed, so I suggest it will be accepted.