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https://hdl.handle.net/1959.11/21040
Title: | Dietary Energy, Digestible Lysine and Available Phosphorus Levels Influence Growth Performance and Carcass Traits of Broilers | Contributor(s): | Sharma, Nishchal (author) ; Toghyani, Majid (author); Girish, C K (author); Laurenson, Yan (author); Choct, Mingan (author) ; Swick, Robert A (author) | Publication Date: | 2017 | Open Access: | Yes | Handle Link: | https://hdl.handle.net/1959.11/21040 | Open Access Link: | http://sydney.edu.au/vetscience/apss/documents/2017/APSS%20Proceedings%202017.pdf | Abstract: | Energy (E) and amino acids (AA) are two of the most expensive components in broiler diets. There is no general consensus regarding the interaction of E and AA on broiler performance and this requires further investigation. Phosphorus (P) is the third most expensive diet component after E and AA (Woyengo and Nyachoti, 2011). Phosphorus plays a vital role in E and AA metabolism, and protein synthesis while P requirement has not been established with certainty. It was hypothesized that the requirements of digestible lysine (dLys, based on the ideal ratio as suggested by Baker and Han, 1994), AMEn and available P (avP) for broilers are not in the same proportion and these nutrients may interact with each other to affect broiler performance. To test this hypothesis, an experiment was conducted using a 3-factor-3-level Box-Behnken design that included dLys (9.5, 10.5, 11.5 g/kg), AMEn (12.77, 13.19, 13.61 MJ/kg) and avP (3.0, 4.0, 5.0 g/kg) generating a total of 15 treatments with 5 replicates of 12 birds. A total of 1050 d-old Ross 308 male broiler chicks were fed a common starter diet (dLys 12.0 g/kg, AMEn 12.77 MJ/kg, avP 4.5 g/kg) up to d 14 and allocated to treatment diets from d 14-34. Response surface was fitted by first, second or third degree polynomial regressions in JMP statistical software v. 12.0.1. | Publication Type: | Conference Publication | Conference Details: | APSS 2017: 28th Annual Australian Poultry Science Symposium, Sydney, Australia, 13th - 15th February, 2017 | Source of Publication: | Proceedings of the Australian Poultry Science Symposium, v.28, p. 144-144 | Publisher: | University of Sydney | Place of Publication: | Sydney, Australia | ISSN: | 1034-6260 1034-3466 |
Fields of Research (FoR) 2008: | 070204 Animal Nutrition | Fields of Research (FoR) 2020: | 300303 Animal nutrition | Socio-Economic Objective (SEO) 2008: | 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences | Socio-Economic Objective (SEO) 2020: | 280101 Expanding knowledge in the agricultural, food and veterinary sciences | HERDC Category Description: | E3 Extract of Scholarly Conference Publication | Publisher/associated links: | http://sydney.edu.au/vetscience/apss/proceed.shtml |
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Appears in Collections: | Conference Publication |
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