Article published the June 2, 2021
1. INTRODUCTION Histidine (Hist) is one of the 10 essential amino acids for fish, and its importance in nutrition expanding the role of this amino acid beyond its function in protein synthesis. It is well recognized that histidine deficiency can impair growth as well as feed conversion in fish (1, 2). Its metabolites, such as carnosine, anserine and NAH (N-acetyl histidine) play an important role ...
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Participation in Forum on October 20, 2020
Dear Alvaro, thank you for your positive feedback. I totally agree with your comment about the age effect. That´s why we run the second approach to standardize and compare performance data from broilers at different ages. However, as I mentioned before, I peer-reviewed journal is being prepared from this preliminary review. More fixed or random factors have been considered to fit multivariate poly ...
Participation in Forum on October 20, 2020
Dear Andreas, thank you for your comments. Most of the studies used in the review were marginally deficient in Lys levels ensuring that Lys was the second-limiting AA. It has been well known that Lys should be the second-limiting AA in the diet after the investigated AA (Arg) for establishing the optimal ratio between a specific AA and Lys (AA:Lys ratio). This practice improves the validity of the ...
Article published the October 7, 2020
INTRODUCTION Like other animal production systems, aquaculture has developed into a highly globalized trade-dependent industry, therefore as global fish farming continues to increase, the need for formulating nutritionally balanced and cost-effective diets with high-quality protein source is important (Furuya et al., 2010). In fact, nutritional value of protein in the diet for fish is influe ...
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Iván Camilo Ospina-Rojas likes the comment:
Iván Camilo Ospina-Rojas, good article, with an enlightening focus. I take advantage of the material presented here, which somehow comes to consolidate some information that we publish, right here at ENGORMIX with the title; Digestible lysine levels obtained by two methods of formulation of diets for 22-to-42-day-old broilers, with a focus on differentiating diets with or without the use of ...
Participation in Forum on September 30, 2020
I might ask the person in charge of your region about the Arg in feed grade. Pls, feel free to contact me ( to keep you updated. When there is a low Arg/Lys ratio is recommended to avoid high Cl levels, which can increase arginase activity increasing the Arg degradation. As Arg cannot be synthesized by poultry (essential AA), I don't recommend using a low Arg/Lys ratio. The pe ...
Participation in Forum on September 28, 2020
George Entz, thanks for your question and sorry for my late response. Recently, it was launched Arg commercially available for feed grade. That´s why I don't see any reason to work with low Arg levels even more in challenged or vaccinated birds. Arginine supplementation has shown to increase antibody titer against some diseases and enhance the antigen-specif immune response. Also, supplement ...
Iván Camilo Ospina-Rojas likes the comment:
Juarez Donzele Thanks for your comment. This is one of the four abstracts presented on this topic a year ago. The full papers have been submitted for publication. I would recommend you read all the information prior to making conclusions based on a 2,300 character abstract. I did not make this publication in Engormix. This is public material that Engormix found on the web based on material ...
Article published the March 9, 2020
Near infrared reflectance spectroscopy (NIRS) is nowadays a common tool to analyze the nutritional content of feedstuffs. Corn hybrids and drying temperatures could affect the nutritional value of the grain. It is important to determine if these factors are detected by NIR. Two corn hybrids (Dekalb 68-05 and Dekalb 65-20) varying in kernel hardness (average and hard respectively) were dried at thr ...
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