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Title: Preliminary Indications that Exogenous Phytase Influences Amino Acid and Glucose Catabolism in the Gut Mucosa
Contributor(s): Moss, A F  (author)orcid ; Cadogan, D J (author); McQuade, L R (author); Liu, S Y (author); Selle, P H (author)
Publication Date: 2019
Open Access: Yes
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Abstract: Wheat-soybean meal diets containing 0, 500, 1000 and 2000 FTU/kg phytase included over the top were offered to 192 male Ross 308 chicks (8 replicate cages) from 7 to 28 days post-hatch to determine the influence of exogenous phytase on concentrations of glutamic acid + glutamine and glucose in portal plasma and the effects of 500 FTU phytase on portal plasma amino acid concentrations. 500 FTU/kg phytase significantly (P < 0.05) increased plasma concentrations of isoleucine, leucine, lysine, phenylalanine, tryptophan, valine and serine. Additionally, phytase inclusions linearly reduced concentrations of glutamic acid plus glutamine (r = -0.363; P < 0.05) and logarithmically increased plasma glucose levels (R² = 0.127; P < 0.05). Glutamic acid plus glutamine to glucose concentration ratios in portal plasma were related to both FCR (R² = 0.374; P < 0.005) and phytase inclusions (R² = 0.252; P < 0.05). Thus, phytase may be manipulating the metabolic fate of glucose and amino acids within the gut mucosa; thereby contributing to improvements in feed efficiency. These findings indicate that further investigations are justified.
Publication Type: Conference Publication
Conference Details: APSS 2019: 30th Annual Australian Poultry Science Symposium, Sydney, Australia, 17th - 20th February, 2019
Source of Publication: Proceedings of the Australian Poultry Science Symposium, v.30, p. 61-64
Publisher: University of Sydney, Poultry Research Foundation
Place of Publication: Sydney, Australia
ISSN: 1034-6260
Fields of Research (FoR) 2008: 070204 Animal Nutrition
070202 Animal Growth and Development
Fields of Research (FoR) 2020: 300303 Animal nutrition
300301 Animal growth and development
Socio-Economic Objective (SEO) 2008: 830309 Poultry
Socio-Economic Objective (SEO) 2020: 100411 Poultry
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
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Appears in Collections:Conference Publication
School of Environmental and Rural Science

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