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
See:
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 ...
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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 ...
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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.
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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. ...
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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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Video published on March 18, 2019
Nelson Ruiz (Nelson Ruiz Nutrition, LLC) talked about the factors to take into account when analyzing these two feed ingredients, during IPPE 2019 in Atlanta, USA.
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This member gave a presentation on February 11, 2019
At the following event:
IPPE - International Production & Processing Expo 2019
This member gave a presentation on January 30, 2018
At the following event:
IPPE - International Production & Processing Expo 2018
Nelson Ruiz likes the comment:
Just reacting to the original question (do phytases always work in poultry nutrition). Clearly this depends on how you define 'work' i.e. what the expectations you have of the phytase. It would be possible, for example, to manufacture a situation where the efficacy of the added phytase looked very poor e.g. if the diet to which you add the phytase has a high concentration of digestible phosphorus ...
This member gave a presentation on January 31, 2017
At the following event:
IPPE - International Production & Processing Expo 2017
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Location:Atlanta, Georgia, Estados Unidos de América
Profile: Professional
Professional Title: Chemist, MS, PhD
Participations in events:
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