title: Energy utilization and growth performance of chickens fed novel wheat inbred lines selected for different pentosan levels with and without xylanase supplementation.
abstract: Different F5 recombinant inbred lines from the cross Yumai 34×Ukrainka were grown in replicated trials on a single site in one harvest year at Rothamsted Research. A total of 10 samples from those lines were harvested and used in a broiler experiment. Twenty nutritionally complete meal-form diets that had 630 g/kg of wheat with different amounts of pentosan, with and without exogenous xylanase supplementation, were used to compare broiler growth performance and determine apparent metabolizable energy corrected for N retention (AMEn). We examined the relationship between the nutritive value of the wheat samples and their chemical compositions and results of quality tests. The amounts of total and water soluble pentosans in wheat samples ranged from 36.7 to 48.0 g/kg DM, and 6.7 to 11.6 g/kg DM, respectively. The mean crude oil and protein contents of the wheat samples were 10.5 and 143.9 g/kg DM, respectively. The average determined value for the kinematic viscosity was 0.0018 mPa.s, and 2.1 mPa.s for the dynamic viscosity. The AMEn of the wheat-based diets had a maximum range of 0.47 MJ/kg DM within the ten wheat samples that were tested. Xylanase supplementation improved (P<0.05) dietary AMEn, dry matter, and fat digestibility coefficients. There was a positive (P<0.05) relationship between in vitro kinematic viscosity of the wheat samples and the total pentosan content. There was a negative relationship between the total pentosan content in the wheat and broiler growth performance. An increase by 10 g of pentosan per kg of wheat reduced (P<0.001) daily feed intake and weight gain by 2.9 g and 3.5 g, respectively. The study shows that the feeding quality of wheat samples can be predicted by their total pentosan content. Supplementary xylanase improved energy and nutrient availability of all wheat samples that was independent of differences in pentosan content.
authors.affiliation: NIPH, Harper Adams University, Shropshire, TF10 8NB, UK vpirgozliev@harper-adams.ac.uk.
authors.forename: V
authors.initials: V
authors.lastname: Pirgozliev
authors.affiliation: NIPH, Harper Adams University, Shropshire, TF10 8NB, UK.
authors.forename: S P
authors.initials: SP
authors.lastname: Rose
authors.affiliation: Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK.
authors.forename: T
authors.initials: T
authors.lastname: Pellny
authors.affiliation: Danisco Animal Nutrition, Wiltshire, SN8 1XN, UK.
authors.forename: A M
authors.initials: AM
authors.lastname: Amerah
authors.affiliation: Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK University of Peradeniya, 20400, Sri Lanka.
authors.forename: M
authors.initials: M
authors.lastname: Wickramasinghe
authors.affiliation: Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK Yuzuncu Yil University, Van, Turkey.
authors.forename: M
authors.initials: M
authors.lastname: Ulker
authors.affiliation: Centre for Agricultural Research, MTA, Martonvásár, Hungary.
authors.forename: M
authors.initials: M
authors.lastname: Rakszegi
authors.affiliation: Centre for Agricultural Research, MTA, Martonvásár, Hungary.
authors.forename: Z
authors.initials: Z
authors.lastname: Bedo
authors.affiliation: Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK.
authors.forename: P R
authors.initials: PR
authors.lastname: Shewry
authors.affiliation: Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK.
authors.forename: A
authors.initials: A
authors.lastname: Lovegrove
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002645:Chickens / Q000254:growth & development*; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements; D043364:Endo-1,4-beta Xylanases / Q000008:administration & dosage / Q000494:pharmacology*; D004734:Energy Metabolism / Q000187:drug effects* / Q000502:physiology; D018506:Gene Expression Regulation, Plant; D008297:Male; D010426:Pentosan Sulfuric Polyester / Q000235:genetics / Q000378:metabolism*; D011134:Polysaccharides / Q000235:genetics / Q000378:metabolism*; D014908:Triticum / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism
chemical_list: D011134:Polysaccharides; D010426:Pentosan Sulfuric Polyester; D043364:Endo-1,4-beta Xylanases
keywords: broiler; viscosity; wheat pentosan; xylanase