PowerPoint-Aaron Cowieson - The Poultry Federation

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Chronological effectsEnzyme (especially non-phytase) efficacy declined from 1980-2010?› Rosen (2002) suggests that non-phytase bioefficacy declined over timefrom the 1980s to early 2000s predicting that if the trend continued ZEROeffect would be reached in 2004› This did not happen› Whats going on?6
De Beer (2010)
Page 1: Enzymes beyond phytase in poultrynu
Page 5: What if all feed enzymes were FREE?
Page 9 and 10: FCR in the Future1.61.51.4FCR1.31.2
Page 11 and 12: So what?› Genetics have altered t
Page 13 and 14: Microingredient competitionAn addit
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Page 17 and 18: Beyond phytase.......What is left t
Page 19 and 20: Low hanging fruitP first› Little
Page 21 and 22: Total Ca (% as fed)Phytase moves us
Page 27 and 28: Medium hanging fruit› If the low
Page 29 and 30: d49 BW (g/bird)FCR d49 (g:g)Cowieso
Page 31 and 32: Cowieson & Masey-O’Neill (2012) U
Page 33 and 34: Cooney et al., (1969) Biotech & Bio
Page 35 and 36: Future› Genetic improvements like

PowerPoint-Aaron Cowieson - The Poultry Federation

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