Announcement of Online Public Symposium – March 27, 2025

Registration Method：　
Please register your participation through the participation form linked below.
　https://forms.gle/3N6GzA1y4TSDrNmN6
If you have any questions or requests regarding the symposium, please write them in the comment field at the bottom of the form.

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Morning Session: 9:00–11:00

Theme: Exploration of the function of chicken gut microbiota and mode of action of probiotics by using germ-free environment 

Organizer: Atsushi Tajima, Ph.D.

Abstract

Two major approaches are being taken to understand the role and function of chicken gut microbiota. Firstly, with the latest molecular biological techniques, metagenomics can reveal the complex community of microbes in the gut and has great potential to access functional pathways of the gut microbiota. This is an attempt to understand the role of the combined microbial consortia in the gut through detailed analysis of large comprehensive data sets. The advantage of metagenomics is that it allows entire gut microbiota to be studied, including unculturable bacterial species, in the context of extensive microbe:microbe and microbe:host interactions.
Another approach is the effect or function of specified target bacteria could be well observed in germ-free environments by simplifying or controlling bacterial communities colonizing in the gastrointestinal tract. For example, it is possible to observe the direct microbe:host interactions in test bacteria mono-associated animals. In the simplified gut microbiota with a limited number of bacterial species, the interaction of each bacterial species can be observed with less complexity. The speakers have been working on a unique approach to elucidating the mechanisms of action of gut microbiota and probiotics by making mono-associated or simplified microbiota chickens made from ex-germ-free birds. Through this symposium, we would like to introduce findings on intestinal microbiota obtained from those ex-germ-free chickens.

Speakers

1）Exploring Host:Gut Microbial Interface using a Gnotobiotic Model
　　　　Andrew Van Kessel, Ph.D.　Vaccine and Infectious Disease Organization, Saskatchewan, Canada.

2）無菌環境を利用したBacillus属を用いたプロバイオティクスの作用機序探索
　　Mode of Action Studies for Bacillus Probiotics in Germ-Free Environments
　　　　Tomohiro Hamaoka (濱岡 寛裕), Ph.D.　　Asahi Biosciences Inc., Peachtree City, USA

3）Using Defined Communities to Evaluate the Role of Specific Microbes
　　　　Ben Willing, Ph.D.　University of Alberta, Alberta, Canada.

Afternoon Session: 14:00–16:00

Theme: Application of advanced biology to poultry production

Lead Organizer: Hiroshi Kagami, Ph.D. 
Co-Organizer: Guojun Sheng, Ph.D.

Abstract

Advancement of poultry science is expected to improve poultry production. For the improve of the chick hatchability, developmental analysis from early embryos to hatching is important. Germline chimera is one of the useful tools for poultry genetic conservation and breeding. To increase poultry meat and egg consumption, scientific analysis on food chemistry is essential. Due to the scientific and industrial importance, this international symposium will invite leading/young scientists in poultry developmental biology, stem cell engineering, reproductive engineering, and food chemistry to present the latest research results. Active discussion will be expected for the advancement of poultry science and industry.　

Speakers

• 1）Perspectives on Avian Stem Cells for Poultry Production
  　　　　Hiroshi Kagami, Faculty of Agriculture, Shinshu University

  2）高病原性鳥インフルエンザ発生時のリスク分散を想定した比内鶏復元の取り組み　(in Japanese)
  　　　　Kazuhiro Rikimaru, Akita Prefectural Livestock Experiment Station

  3）初生雛鑑別AIの開発　(in Japanese)
  　　　　Yoshiaki Nakamura, Grad School of Integrated Sciences for Life, Hiroshima University

  4）Health benefits of eggs: effects on serum lipid profiles and antioxidant status in human
  　　　　Yoshimi Kishimoto, Faculty of Agriculture, Setsunan University

  5）Establishment of an Eggshell-Free Culture for Comprehensive Observation of Chicken Embryonic Development
  　　　　Kie Murai, Faculty of Agriculture, Shinshu University

  6）The effects of economically damaging mycotoxins on the cell cycle of chicken primordial germ cells
  　　　　András Ecker, Hungarian University of Agriculture and Life Sciences

  7）Avian Model in Developmental Biology and Conservation Studies
  　　　　 Guojun Sheng, IRCMS Kumamoto University