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 ...
Video published on July 11, 2024
Steve Leeson (Professor Emeritus, University of Guelph) talks about the evolution of the modern broiler and its response to energy and amino acids in diet formulation, as well as the impact of energy and fat on feed costs, in this Engormix interview.
Video published on July 11, 2024
Steve Leeson (Professor Emeritus, University of Guelph) comments on the use of amino acids in broiler nutrition and the performance of low energy diets, in this Engormix interview.
Video published on July 11, 2024
Steve Leeson (Professor Emeritus, University of Guelph) explains the advantages of Apparent Metabolizable Energy (AMEn) over other methodologies, and comments on the relevance of nitrogen retention in this Engormix interview.
Article published the September 7, 2021
1. IntroductionUnder normal circumstances, excessive free radicals are scavenged by body enzymatic and non-enzymatic antioxidants, but oxidative stress can occur when the amount of oxidant production surpasses the capacity of the body’s antioxidant system [1,2]. Different aspects of avian productive and reproductive performances, such as egg production rate and egg quality traits, as well as ...
Article published the June 28, 2020
DIMA WHITE, STEVE LEESON and WOO KYUN KIM* report that a herbal feed supplement, consisting of natural and organic choline in conjugated form (phosphatidyl choline) along with certain phospholipids can successfully and economically replace choline chloride at lower inclusion levels and provide additional beneficial effects in poultry.Functions and metabolism of cholineCholine, a water-soluble vita ...
Article published the July 27, 2017
Background & AimsButyrate has been shown to potently regulate energy expenditure and lipid metabolism in animals, yet the underlying mechanisms remain to be fully understood. The aim of this study was to investigate the molecular mechanisms of butyrate (in the form of butyrate glycerides, BG)-induced lipid metabolism at the level of gene expression in the jejunum and liver of broilers.Methodol ...