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https://hdl.handle.net/1959.11/4460
Title: | Effect of drying temperatures on feed value of maize for broilers | Contributor(s): | Iji, Paul (author); Khumalo, K (author); Slippers, S (author); Gous, R M (author) | Publication Date: | 2006 | Handle Link: | https://hdl.handle.net/1959.11/4460 | Abstract: | Apart from slight changes in starch contents, maize grain quality was largely unaffected by drying at different temperatures between 85° and 105°C. Over a feeding period of 28 days feed intake was increased (P < O.O5) as a result of heat-treating the maize up to 95°C. Including a microbial enzyme, Avizyme l500, resulted in an increase (P < O.O5) in final body weight of chicks but there was no response when growth was assessed at an earlier age. Over the entire feeding period, feed conversion efficiency (FCE) declined (P < O.O1) with increasing oven temperature, regardless of supplementation with the microbial enzyme. The weight of visceral organs, protein content and activities of pancreatic and jejunal digestive enzymes were unaffected by grain heat treatment or microbial enzyme supplement. The ileal digestibility of calcium was reduced (P < O.O1) on diets based on fresh maize and maize that was oven-dried at 105°C. Heat-treatment improved (P < O.O5) the ileal digestibility of phosphorus in chicks on the diets without the enzyme supplement. No effects of grain heat treatment or microbial enzyme supplementation was observed on ileal digestibility of energy, protein, Ca and amino acids. The results indicate some variations in grain quality as a result of heat treatment but the differences were not significant enough to stimulate major responses to the microbial enzyme. | Publication Type: | Conference Publication | Conference Details: | APSS 2006: 18th Annual Australian Poultry Science Symposium, Sydney, Australia, 20 - 22 February, 2006 | Source of Publication: | Proceedings of the Australian Poultry Science Symposium, v.18, p. 87-90 | Publisher: | University of Sydney, Poultry Research Foundation | Place of Publication: | Sydney, Australia | ISSN: | 1034-6260 1034-3466 |
Fields of Research (FoR) 2008: | 070204 Animal Nutrition | Socio-Economic Objective (SEO) 2008: | 830309 Poultry | Peer Reviewed: | Yes | HERDC Category Description: | E1 Refereed Scholarly Conference Publication | Publisher/associated links: | http://trove.nla.gov.au/work/6382329 http://www.vetsci.usyd.edu.au/apss/documents/2006/APSS2006-iji-pp87-90.pdf |
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Appears in Collections: | Conference Publication School of Environmental and Rural Science |
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