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Article published the July 17, 2025
1. IntroductionThere is considerable interest in the successful development of low protein diets for broiler chickens, which axiomatically contain high inclusions of supplemental amino acids. This is because low protein diets have the potential to generate economic, environmental and bird welfare advantages.Formulation of low protein diets are usually achieved by decreasing soybean meal inclusions ...
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Article published the July 16, 2025
I. INTRODUCTIONThe digestive dynamics of starch and protein are considered pivotal to broiler performance (Liu and Selle, 2015). Moreover, it was proposed that the rates of starch digestion and glucose absorption exceed the rates of protein digestion and amino acid absorption and this asynchrony in digestive dynamics compromises the performance of broiler chickens. If so, it follows that the provi ...
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Article published the June 23, 2025
I. INTRODUCTIONSupplementation of amino acids to reduce feather pecking behaviour and improve plumage condition has been previously studied and found to be successful (Savory, 1998, van Hierden et al., 2004). Feather eating behaviour performed by feather pecking birds suggests that feathers (predominately composed of keratin protein) may be consumed as an alternative source of amino acids, if dige ...
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This member gave a presentation on February 12, 2025
At the following event:
36th Annual Australian Poultry Science Symposium
This member gave a presentation on February 10, 2025
At the following event:
36th Annual Australian Poultry Science Symposium
Article published the February 2, 2025
In previous assays (Macelline et al., 2022), data on egg production rate (EP) and egg mass (EM) of Isa Brown layers from 27 to 33 weeks of age (peak production -PP) and from 42 to 48 weeks of age (Post PP) were used to predict amino acid (AA) requirements by fitting linear broken-line (LBL), and quadratic broken-line (QBL) models. Subsequently, the ideal ratios of Ile, Met + Cys, Thr, Trp, and Val ...
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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 ...
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Article published the June 19, 2024
I. INTRODUCTIONWheat is the predominant feed grain in Australia and other dry regions in the world. Typical broiler diets in Australia contain 60-70% wheat. Climate-induced factors, including elevated temperature, have been reported as depressing crop production around the globe during the last few decades (Fernie et al., 2022) and there is limited understanding of how climate-induced factors may ...
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Article published the March 14, 2024
All grains, vegetable-based protein meals and their by-products used in poultry diets contain some levels of phytate phosphorous (PP). Depending on the ingredient type and source, a typical broiler chicken diet would contain between 2.2 to over 3.5 g/kg dietary PP. Research has shown that phytate anti-nutritional effects can reduce the digestibility of amino acids (AA) and minerals. Previously the ...
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This member gave a presentation on February 21, 2024
At the following event:
35th Annual Australian Poultry Science Symposium
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Location:Sydney, New South Wales, Australia
Profile: Academic / scientific
Occupation: Animal Nutritionist
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