Dr. Phan Quang Vinh

Thank you Lalit Belwal for your correction regarding the average titer of E3. I meant it was considered negative by the authors of the article. Actually if the data in Table 1 is subjected to statistical analysis you will not be surprised to see that all are not significantly different from each other considering the fact that all CV 's are very high ( therefore treatment variances are also high.

Dear Dr. Bouderbal, I guessed you should make the corrections in Table 1. The figures shown are the actual titers when you used the formula to compute, not the value of log10 of titers any more. But you indicated in the Table as Log10 of titers. I said you should check for your biased conclusion because in E7 the average titer was 1253 and your conclusion is positive whereas in E3 the average tit ...

Please check. All figures shown in Table 1 are not decimal log values. Your interpretation of the serum titers got from farms E1,E2,E3 and E7 are biased . Look at the average titers and their ranges from E3 which were considered as negative versus the averages and the ranges of serum titers of E1,E2 and E7 which were interpreted as positive. What is the implication of highly variable and high CV v ...

Hi Dr. Liu, I appreciate very much for your prompt response. What I mean is that we already figure out the underlying mechanism(s) thru smaller factorial experiments ( whether we use RSA or not in these experiment). Later on, when we design larger experiments, such prior information becomes handy, e.g. setting the spaces/levels and the ranges for individual factors,assisting us in interpreting re ...

" Would broiler bioassays be more instructive using nutritional geometry ? " If I have to answer this question, my reply is "maybe". From many studies initially using single factor experiments, we realize that there are interactions among single factors . Designs for factorial experiments were made to address this interaction problems. Thereon, we know about inverse relations, augmentative and s ...

Mr. Pablo Chacana erred in replying to Dr. Bouayad that one cannot set a level of antibody titer to differentiate vaccinated birds protected by vaccine from those that are inadequately protected. This is the most critical part that any developer of an ELISA or other immunological assays must have in mind ( or else, the test is useless).Secondly, the generalization that inactivated vaccines give hi ...

It is hard to appreciate the findings in this study especially when moisture data was not presented. The significant difference in dressing % ( about 10 % between control and treatment with vitamins or omega 3) may just reflected the difference in moisture content. How about antibody titers against NCD of vaccinated broilers? final weights of birds under each treatment and blood cholesterol?

At best, data on layer manure provided by Badr Alfaddil should be put in good use by the farm manager to modify or re-formulate layer's feed. For example, his data did show that Phosphorus and calcium were not effectively utilized and that magnesium,Copper,maganese, Iron and Zinc were oversupplied.Based ob the observation of Philippe Joly: surely anything still with some nutritive values can be us ...

I wonder how do you explain the significant differences in FCR among five treatments at day 10 when weight gain as well as feed intake showed no treatment effects. Please show the CV's and test for treatment variance homogeneity.

The results were presented in a repetitive manner. The authors can show only Tables 4,8 and 12 which encompassed all data in other tables. My inquiry is related to the curious fact that final weights of Tilapia under different treatments were not shown. If one wants to calculate the total weight gain based on FI and FCR ( or FE) presented ,we will come up with figures ridiculously small for Tilapi ...