Advancia 2016

Advancia 2016: Celebrating 10 years of research on sulfur amino acids

Thu, 17 Jun 2021 00:00:00 GMT

Speaker: Dr Pierre-André GERAERT, Director Innovation Marketing, Adisseo France SAS

Sulfur amino acids: more than essential amino acids! 10 years of new research to demonstrate their roles in cell signaling, modulating lipid and energy metabolisms and promoting antioxidant mechanisms.

Advancia 2016:
Sulfur amino acids: more than essential amino acids! 10 years of new research to demonstrate their roles in cell signaling, modulating lipid and energy metabolisms and promoting antioxidant mechanisms. Watch scientists testimonials on Amino Acids research.

Oxidation and poultry meat quality: impact of sulfur amino acids

Thu, 17 Jun 2021 00:00:00 GMT

Speaker: Dr Mario ESTEVEZ, Dep. Animal Production and Food Science, University of Extremadura, Cáceres, Spain

Keys in the synthesis of glutathione, sulfur amino acids have shown antioxidant capacities which influence the meat quality and conservation.

Advancia 2016:
Sulfur amino acids: more than essential amino acids! 10 years of new research to demonstrate their roles in cell signaling, modulating lipid and energy metabolisms and promoting antioxidant mechanisms. Watch scientists testimonials on Amino Acids research.

Webinar #1: Oxidative Stress in Animal Production

Thu, 04 Mar 2021 10:00:39 GMT

Speakers: Prof Peter Surai, Dr Mario Estevez and Dr. Pierre-André Geraert

The basis of oxidative stress (Prof Peter Surai) and its impact on meat quality (Dr Mario Estevez) & share questions and answers during the roundtable.

Questions and Anwers

Q: A comment on flavonoïds, even if they are absorbed at low level some of them play an indirect role in inducing at gene level endogenous antioxidant systems.

Reinforcing the anti-oxidant defenses of the gut definitely improve its resistance to aggressive factors such as dietary ones (induced by mycotoxins for instance) or induced by microorganisms (bacteria, virus). Polyphenols and flavonoids may bring antioxidant benefits reinforcing the host response to xenobiotics.

Q: Is there a significant difference on the meat between chicken fed with Organic selenium and another fed with mineral selenium?

We assume that you mean organoleptic properties: improving the antioxidant status of the meat often is "indirectly" perceived by consumers influencing their choice. The conservation of the meat is also improved reducing the changes in color, texture,.. during storage or processing. Drip losses are clearly reduced when birds receive an organic selenium source compared to a mineral one.

Q: Oxidative impaires male fertility .. What about female ?

Indeed, the spermatozoids are clearly affected by oxidation. But ovocytes and particularly their membrane is also rich in polyunsaturated fats and prone to oxidation. Most parameters linked to egg production such as the export of vitellogenin by the hepatocyte toward the ovary is conditioned by membrane phospholipids. Preserving them from oxidation will help to enhance fertility. Hatchability is also clearly affected by oxidative stress situations and can be restored by using the right antioxidant solution.

Q: You said free radicals are used as weapons against bacteria, play a role of messenger: what about (too) high antioxidant intake?

Indeed, you're right. Free radicals are normal elements in the metabolism that help our body to get rid of xenobiotics. Antioxidant have to be balanced and an excess of one will not compensate for a deficiency of another and might event counteract the benefits of their nature. Proposing a balanced of efficient antioxidant solutions is thus key to improve animal performance under challenging conditions.

Q: Is oxidative stress affecting fertility ?

yes indeed, hot conditions and ageing are good examples of oxidative stress that affect fertility. An optimal balance of antioxidants has long been shown to improve fertility in a wide range of animal species including human.

Q: Is oxidized fat in the diet a source of oxidative stress?

Yes, oxidized fat can induce some toxicity depending the level and thus increase oxidative stress to the animal. It has long been worked at, but nowadays it is sometimes difficult to link the actual used index (iodine, …) to the decreased performance. However, lipid peroxydes have clearly a negative effect on sensitive molecules to oxidation. Antioxidant systems can help to alleviate those negative effects, particularly the selenoprotein Glutathione peroxidase 2 have been demonstrated to detoxify different lipid peroxides.

An overview of synthetic amino acids

Thu, 17 Jun 2021 00:00:00 GMT

Speaker: Prof Mike T. KIDD, Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, USA

More than 50 years of development of synthetic amino acids and how each new one has helped to revise amino acid supply and lower dietary protein content.

Advancia 2016:
Sulfur amino acids: more than essential amino acids! 10 years of new research to demonstrate their roles in cell signaling, modulating lipid and energy metabolisms and promoting antioxidant mechanisms. Watch scientists testimonials on Amino Acids research.

Sulfur Amino Acids: essential building blocks for protein deposition

Thu, 17 Jun 2021 00:00:00 GMT

Speaker: Kate J. MELOCHE, Department of Poultry Science, Auburn University, Auburn, AL, USA

The need to revise sulfur amino acid requirements with the evolution of the genetic potential of broilers and to adapt to the different growth phases ?

Advancia 2016:
Sulfur amino acids: more than essential amino acids! 10 years of new research to demonstrate their roles in cell signaling, modulating lipid and energy metabolisms and promoting antioxidant mechanisms. Watch scientists testimonials on Amino Acids research.

Sulfur Amino Acids: a molecular switch for oxidative stress signaling

Thu, 17 Jun 2021 00:00:00 GMT

Speaker: Dr Alain LESCURE, UPR ARN CNRS, Université de Strasbourg, Institut de Biologie Moléculaire & Cellulaire, Strasbourg, France

Beyond their role in protein synthesis, sulfur amino acids have important signaling roles in the redox balance and the antioxidant mechanisms.

Advancia 2016:
Sulfur amino acids: more than essential amino acids! 10 years of new research to demonstrate their roles in cell signaling, modulating lipid and energy metabolisms and promoting antioxidant mechanisms. Watch scientists testimonials on Amino Acids research.

From inflammation to immune competence: sulfur amino acids and gene expression

Thu, 17 Jun 2021 00:00:00 GMT

Speaker: Prof Sammy AGGREY, NutriGenomics Laboratory, Department of Poultry Science, University of Georgia, Athens, GA, USA

Through deficiency or adequate supply, methionine showed its potential to reduce inflammation and stimulate immune system

Advancia 2016:
Sulfur amino acids: more than essential amino acids! 10 years of new research to demonstrate their roles in cell signaling, modulating lipid and energy metabolisms and promoting antioxidant mechanisms. Watch scientists testimonials on Amino Acids research.