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His main area of research is potential for manipulation of eggs and poultry meat as it impacts human health. They have been working on incorporation of omega-3 and other polyunsaturates into eggs for some 10 years, and most recently have been studying the transfer efficiency of lutein into eggs. Lutein is known to sustain eye health in humans, and eggs will likely become a major dietary source of this nutraceutical.
Other research involves the use of medium chain triglycerides to impact gut health in the absence of antibiotic growth promoters.
Location: Ontario, Canadá
Participation in Forum on December 10, 2025
@Luis Fernando Vergamini Luna If you truly know the nutrient matrix values of your ingredients, then “quality” is automatically factored into formulation and does not affect decisions on nutrient density. Economic decision to use lower nutrient dense ingredients sometimes places a limit on ever-lower F:G and we have to accept a higher numeric value. All about economics rather than chasing the Guin ...
Participation in Forum on November 25, 2025
@David Wicker DavidAgree with your comments. There are obvious limits to bird size as a means of increasing plant throughput. Often comes down to our current issue with limited supply of quality chicks from our current breeders. The US has never embraced “thining” as an option to maximise farm throughput. Personally I see it as a “messy” option and one really tests farm biosecurity re our current ...
Participation in Forum on November 25, 2025
@Asadollah ghasemi Nutrient density decisions should be independent of ingredient quality, since this issue should be resolved by adjustments to your formulation matrix values for any ingredient. If the question relates to “variable/unknown” issues with SBM etc, then perhaps move to higher ND, although this can become expensive “insurance”
Article published the November 21, 2025
Growth of the modern broiler is very adaptable to a vast range of diet nutrient densities, and so formulation matrices are greatly impacted by prevailing economic situations. The broiler still eats quite precisely to its energy needs and alters its feed intake in response to variable diet energy level. For example, 25-35d broilers can be fed diets a low as 2850 kcal/kg or as high as 3500 kcal/kg a ...
Participation in Forum on August 20, 2025
At 21c you may get faster growth rate (0.2-0.3d) but inferior feed efficiency (+0.01-0.02) depending on efficiency of ventilation system
Participation in Forum on August 18, 2025
Mario, always good to talk to you.
Mash vs. pellets adds another dimension to feed intake. For broilers, it’s obvious that the physical density of a pelleted feed allows for faster intake of a given quantity of feed. Pellet size likewise influences time spent feeding. Both these factors greatly impact intake and growth after about 25d at higher stocking densities, when we invariably see slow ...
Participation in Forum on February 24, 2025
@Kevin Stickney In theory, yes. You could offer feed and oyster shell, etc., and they would balance their nutrient needs. The practical issue is that birds invariably take too much oyster shell because of its novel texture. We see this in small flocks where a calcium feeder is set up. Birds consume 8-10g/d of oyster shell and then soft shelled eggs appear because of an induced P deficiency. You co ...
This member gave a presentation on February 12, 2025
At the following event:
36th Annual Australian Poultry Science Symposium
Article published the February 11, 2025
All commercial poultry eat with reasonably good precision to balance nutrient intake with requirements. Short term, there can be some variation in feed intake related to local situations, but long-term, the mechanisms of feed intake regulation are quite precise. Matching nutrient needs with intake is an obvious inherent evolutionary necessity to ensure survival and reproduction. A bird’s dai ...
News published on October 4, 2024
The 36th edition of the APSS will be held at The University of Sydney – Abercrombie Business School, from 10-12 February 2025.
These will be some of the major themes: Layer Nutrition and Egg Quality, Broiler Nutrition, Managing Antibiotic-free Production, Sustainable use of Protein Ingredients and Avian Influenza.
11 invited speakers are confirmed:
- Vitor Ar ...