Nelson Ruiz
Chemist, MS, PhD
Animal nutritionist with emphasis in poultry, feed quality assurance and quality control. Over 39 years of experience in the industry in feed formulation, antinutritional factors, metabolic problems.
Chemist, MS, PhD
This member will give a presentation on January 27, 2020
At the following event:
IPPE - International Production & Processing Expo 2020
Participation in Forum on November 2, 2019
Matovu Jacob please e-mail to and I will attach the procedures.
Participation in Forum on October 30, 2019
Dimcho Djouvinov, your comment is quite interesting, and since you are writing from AB Vista I assume you have quantitative data to support your assertions, would you share your data? Thanks
Participation in Forum on July 30, 2019
Dr. Albin and Dr. Wiseman, yes indeed I also agree with your comments because the video presented is actually a clip of a longer video and it is not fully representative of all of what I have to say reference full-fat soybeans. But both of you, Gentlemen, are authorities on the subject, have lots of experience and knowledge on the nutritional value of full-fat soybeans, so you can also further dis ...
Participation in Forum on July 29, 2019
Dear Luis Fernando, thanks for your question, but currently I have no direct experience with soy protein concentrate. Per the definition of SPC in the second edition of the Manual of Quality Analyses for Soybean Products in the Feed Industry (by Jan van Eys) which says that in SPC "most of the oil and water soluble non-protein constituents" have been removed, then presumably there are no basis for ...
Participation in Forum on July 22, 2019
Although I am a regular attendant of the International Poultry Scientific Forum (IPSF) in Atlanta, for some unknown reason I missed this presentation at the 2019 IPSF. It would be interesting to see the whole set of data since you (Chen et al, at Novus International) assert that trypsin inhibitors and urease activity are poorly correlated in solvent-extracted soybean meal samples. We don´t k ...
Participation in Forum on July 6, 2019
Mr. Aslam, the discussion on urease activity and its correlation with trypsin inhibitors applies only to SOYBEAN MEAL. Because full-fat soybeans (FFSB) are generated through different methods such as roasted soybean seeds, it is not possible to establish a general correlation across the different methods. In the case of SOYBEAN MEAL which is generated worldwide mostly by the solvent extraction met ...
Participation in Forum on June 26, 2019
I just would like to suggest that the authors carefully review the units for the treatments (T2, T3 and T4) as presented in the abstract. Something is not right.
Participation in Forum on June 25, 2019
Dear Dr. Wiseman, you are absolutely right in that urease activity does not measure overprocessing of soybean meal. It was never its objective. Caskey and Knapp [Method for determining inadequately heated soybean meal. Ind. Eng. Chem. Anal. Ed. 16: 640-641 (1944)] developed the technique to determine underprocessing of soybean meal fed to ruminants which at the same time were fed urea in the feed. ...
Video published on March 18, 2019
Nelson Ruiz (Nelson Ruiz Nutrition, LLC) explained the difference between the two methods through a comparative study, during IPPE 2019 in Atlanta, USA.
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Location:Atlanta, Georgia, Estados Unidos de América
Profile: Professional
Professional Title: Chemist, MS, PhD
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