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 ...
Article published the August 8, 2016
IntroductionButyrate plays an important role in gastrointestinal health in broilers. Although very efficacious and possible to substitute for dietary antibiotics, pure butyrate has obvious limitations of smell and handling and is virtually absorbed in the upper digestive tract. Butyrate glycerides have no such limitations and their butyrate can be released by lipase in the small intestine, thus pr ...
Article published the May 3, 2016
In antibiotic-free broiler production systems, nutritionists can support the gut ecosystem with the judicious use of highly digestible diets for the young bird. Varying degrees of antibioticfree production (ABF) of chicken are now imposed by government agencies or major retailers or are being voluntarily undertaken by integrated broiler companies. It seems highly unlikely that broilers c ...
Article published the May 3, 2016
Use of dietary plasma in pre-starters for broilers may improve growth and health. Early nutrition of the broiler chicken is becoming more important as more knowledge is gained about the positive correlation between early growth rate and market weight and also the impact early growth and development have on the uniformity of carcass weight and composition. All of these factors become even ...