Satellite Symposia

Organizing Company: Lucta SA and lnstitut de Recerca i Tecnologia Agroalimentàries (IRTA)

Title of symposium: Stress and Gastrointestinal Function: a Challenge in Pig Production

Symposium summary

This symposium will provide a comprehensive review of the latest scientific advances in the field of gastrointestinal function, and how homeostasis is compromised by stress. Global experts at the frontier of industry-academia will present research on digestive function, physical and immunological gut barrier, and gut microbiome, in relation to stress. Special attention will be given to the impact of the main stress-related challenges currently affecting the pig industry. Ultimately, the symposium will generate discussion and provide guidance towards optimized strategies to tackle some of the main issues affecting pig commercial production and welfare.

Organizing Company: ANIMINE

Title of symposium: Zinc and copper metabolism: a holistic approach for swine nutrition and health

Symposium summary

Trace minerals are essential elements added to every single diet formulated in the world.
Zinc (Zn) is playing and important role on the immune response, the activity of digestive
enzymes and the morphology of the digestive tract. Copper (Cu) is involved in processes concerning iron utilisation and synthesis of haemoglobin and connective tissue.
After weaning, the inclusion of high amounts of Zn in diets for piglets has an inhibitory effect on the incidence and severity of unspecific diarrhea and a positive effect on weight gain.
Nonetheless, the evidence behind these beneficial effects remains to be demonstrated.
Cu has been used as a “growth promoter” in pig production for several decades. Few hypotheses have been proposed to explain the growth promoting effect of dietary Cu in relation to the gut function (modulation of the microflora or an effect on morphology and turnover of enterocytes) or in relation to systemic effect within the body (hormonal regulationor lipids´ metabolism) but the real mechanism(s) of action remain a matter of controversy.
The prolonged use of Zn and Cu at high concentrations promote selective pressure on bacteria and, for this reason, spread of resistance to antibiotics of gut bacteria in pigs. Besides bacterial resistance, the accumulation of both Zn and Cu in the soil is a growing societal concern in many countries.
This satellite symposium around copper and zinc has the intention to update and scientific knowledge and to foster discussions with reputed scientific experts in the field of trace minerals and swine nutrition from the USA and Europe.

Organizing company: Metex Noovistago

Title of symposium: Dietary amino acids in feed intake and growth in pigs: the gut-hypothalamus and the liver-muscle axes

Symposium summary

While energy has been identified as the main driver in feed intake, recent advances in digestive physiology show that the sensing of amino acids activating the gut-hypothalamus axis may be the most critical in influencing short- and long-term appetite in pigs. In addition, the amino acid cycle between liver and muscle orchestrates protein accretion (and growth).
The mediators of the dialogue between amino acids and body functions are receptors, transporters, and transceptors located in the apical membrane of enteroendocrine cells (EEC) that orchestrate the hunger-satiety cycle.
Cell responses include the release of more than 20 different types of hormones in response to nutrients.
The concept of ‘one cell – one hormone’ has been abandoned adding another layer of complexity to understand the control of feed intake. In addition, abundance or deficiency of amino acids can be sensed by protein kinases (GCN2, mTOR, AMPK) directing protein synthesis in liver and muscles.
These research areas are two of the most active in physiology and have delivered ground-breaking advances in recent years.
This Satellite Symposium will bring to the DPP community an update of the most important advances in amino acid metabolism relevant to pig nutrition by highlighting a double axis of metabolic implications: the gut-brain and the liver-muscle.

Organizing Company: MetaPig

More information about this satellite symposium will be available soon.