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Nelson Ruiz
Chemist, MS, PhD
Animal nutritionist with emphasis in poultry, feed quality assurance and quality control. Over 40 years of experience in the industry in feed formulation, antinutritional factors, metabolic problems.
Chemist, MS, PhD
Article published the February 15, 2024
Nelson Ruiz (Nelson Ruiz Nutrition LLC)   A set of 24 solvent extracted commercial soybean meal (CSBM) samples, which corresponded to the same lots of CSBM used in the field, were evaluated. The CSBM were from different origins (Argentina, Bolivia, Paraguay, Trinidad & Tobago, U.S.). The objective herein was to evaluate the relationship between KOH protein solubility (KOHPS, a measur ...
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Video published on February 14, 2024
Nelson Ruiz (Nelson Ruiz Nutrition LLC) speaks on his research presented at the IPSF regarding the evaluation of soybean meal with KOH protein solubility and trypsin inhibitor as the main measurements, in this Engormix interview during IPPE 2024 in Atlanta, USA.
Video published on February 9, 2024
Nelson Ruiz (Nelson Ruiz Nutrition LLC) explains how to deal with both cases and offers his insights and recommendations, in this Engormix interview during IPPE 2024 in Atlanta, USA.
This member gave a presentation on January 29, 2024
At the following event:
IPPE - International Production & Processing Expo 2024
Participation in Forum on October 25, 2023
Dr. Boney, would you, please, let us know the exact citation of your article in the JAPR? Thank you.
Participation in Forum on June 23, 2023
George Entz Precision nutrition and return on investment go hand in hand. If synthetic amino acids are too expensive to be added, it means that least-cost formulation is not taken them when they are offered in the formula, and consequently they are not contributing to decrease formulation cost. But precise nutrition is for the optimization of formulation that should be reflected in performance. M ...
Participation in Forum on June 22, 2023
Laura Popovich Yes, working with the AOCS (2020) method FFSB (as well as mechanically extracted soybean meal and solvent extracted soybean meal [SBM]) should be ideally lower than 5 TUI/mg, maximum 5.5 TUI/mg or expressed in mg/g using the same AOCS (2020) method maximum 3.5 mg/g. However, working with the European ISO 14902:2001, maximum 2.5 - 3.0 mg/g. These maxima are for inclusion levels of FF ...
Participation in Forum on June 22, 2023
Hello Dr. Cowieson, Do you mind commenting on the following assertion in a different Engormix forum? "Trypsin and chymotrypsin inhibitors will also inhibit the activity of trypsin-like proteases, such as serine proteases, see Morita (1996) Journal of Biochemistry, 119(4), 711–718. In that respect, you will probably fare better with aspartic proteases, which are resistant to trypsin (Kunitz) and ...
Participation in Forum on June 19, 2023
George Entz Soybean meal (SBM) is the predominant supplier of digestible amino acids in commercial poultry diets. I don´t know how predominant is SBM where you are or where you visit flocks. But if SBM is from 20% on in the formula of broiler feeds it is likely that you will see rapid feed passage in the excreta of any flock of broilers. SBM, to the best of my knowledge, continues to be at a ...
Participation in Forum on June 18, 2023
Hello Ibrahim, yes proteases may help to alleviate the effects of excess trypsin inhibitors in the diet. However, there are other ways to prevent the problem such as formulating for a maximum level of trypsin inhibitors in the formula provided you have alternative ingredients available in the market so that you can afford a reduction in the level of inclusion of soybean meal. If your company has t ...
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Location:Atlanta, Georgia, United States
Profile: Professional
Professional Title: Chemist, MS, PhD
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