Effects of cereal grain source and supplemental xylanase concentrations on broiler growth performance and cecal volatile fatty acid concentrations from 1 to 40 d of age2

Poultry Science
K W McCaffertyW A Dozier

Abstract

An experiment was conducted to evaluate the effects of feeding diets varying in cereal grain source and supplemental xylanase concentrations on growth performance and cecal volatile fatty acid (VFA) concentrations of Ross × Ross 708 male broilers from 1 to 40 d of age. A total of 1,536 day-old chicks were randomly distributed into 64 floor pens (24 chicks/pen; 0.08 m2/bird) and fed 1 of 8 dietary treatments (TRT) with 8 replicates per TRT. Experimental TRT were of either corn- (TRT 1 to 4) or wheat-based (TRT 5 to 8) origins. The 4 dietary TRT for each cereal grain source consisted of a positive control (PC) reference diet and 3 reduced AMEn diets (AMEn reduced 66 kcal/kg below PC) with supplemental xylanase at either 0 (negative control), 12,000, or 24,000 BXU/kg. Birds and feed were weighed at 1, 14, 26, and 40 d of age to determine BW gain, feed intake, and feed conversion ratio. At 26 and 40 d of age, cecal contents were collected and pooled per pen (7 birds/pen; 5 replicate pens/TRT) for VFA concentrations. No TRT differences (P > 0.05) in cumulative growth performance were observed. Likewise, no TRT differences (P > 0.05) in acetic or total VFA concentrations were observed at 26 or 40 d of age. However, cereal grain sourc...Continue Reading

References

May 5, 2005·Applied and Environmental Microbiology·Ole HøjbergBent Borg Jensen
Jun 1, 2006·Nutrition Research Reviews·A J CowiesonE E M Pierson
Jun 1, 1998·Nutrition Research Reviews·M R Bedford, H Schulze
Feb 13, 2009·Poultry Science·Y PangT J Applegate
Sep 29, 2009·Journal of Animal Science·T E WeberB J Kerr
May 13, 2010·British Poultry Science·A J CowiesonV Ravindran
Apr 1, 2013·Asian-Australasian Journal of Animal Sciences·Hui Ling ZhangYu Xia Yang

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