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Non-starch polysaccharide-degrading enzymes may improve performance when included in wheat- but not maize-based diets fed to broiler chickens under subclinical necrotic enteritis challenge

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Animal Nutrition 2022年第3期10卷 54-67页

作者： Eunjoo Kim Amy F.Moss Natalie K.Morgan Kosar Gharib-Naseri Peter ader Mingan Choct School of Environmental and Rural Science University of New EnglandArmidaleNSW 2351Australia BASF SE 68623LampertheimGermany

The present study investigated whether supplementing fibre-degrading enzymes can ameliorate the severity of subclinical necrotic enteritis(NE)in broiler chickens offered wheat-or maize-based diets.A total of 1,544 mixed-sex broiler chickens were assigned to 16 experimental treatments as a 2×2×4 factorial arrangement of *** factors were the following:NE challenge,yes or no;diet type,wheat-or maize-based;and enzyme supplementation,control(no enzyme),family 10 xylanase(XYN10),family 11 xylanase(XYN11)or b-mannanase(MAN).Each treatment was replicated 6 times,with 16 birds per replicate pen.A three-way challenge×diet type×enzyme interaction occurred for body weight at 21 d of age(P=0.025)and overall feed conversion ratio(P=0.001).In the non-challenged birds fed the wheat-based diet,supplementing MAN increased d 21 body weight compared to the *** challenged birds fed the maize-based diet,supplemental XYN11 impeded body weight and overall FCR compared to the *** offered the maize-based diet presented heavier relative gizzard weights at both 16 and 21 d of age(P<0.001)and reduced liveability(P=0.046)compared to those fed the wheatbased *** supplementation reduced ileal and jejunal digesta viscosity at 16 d of age only in birds fed the wheat-based diet(P<0.001).XYN11 increased ileal digesta viscosity in birds fed the maizebased diet,and MAN reduced it in birds fed the wheat-based diet at 21 d of age(P=0.030).Supplementing XYN11 improved ileal soluble non-starch polysaccharides(NSP)digestibility in birds fed the wheat-based diet compared to non-supplemented birds(P<0.001).Birds fed the wheat-based diet displayed a higher abundance of Bifidobacterium,Lactobacillus and Enterobacteriaceae and butyric acid in the caeca at 16 d of age compared to birds fed the maize-based diet(P<0.05).In conclusion,supplemental XYN11 exacerbated the negative impact of NE on growth performance in birds fed the maizebased *** wheat-based diets with

关键词： Broiler chicken Carbohydrase Mannanase Necrotic enteritis Prebiotic oligosaccharides Xylanase

The flow of non-starch polysaccharides along the gastrointestinal tract of broiler chickens fed either a wheat-or maize-based diet

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Animal Nutrition 2022年第2期9卷 138-142页

作者： Eunjoo Kim Natalie K.Morgan Amy FMoss Lily Li Peter ader Mingan Choct School of Environmental and Rural Science University of New EnglandArmidaleNSW 2351Australia BASF South East Asia 038987Singapore BASF SE 68623LampertheimGermany

The present study characterised the types and amounts of non-starch polysaccharides(NSP)remaining undigested along the gastrointestinal tract(GIT)of broiler chickens offered a typical wheat-or maizebased ***-day old Cobb 500 mixed-sex chicks were assigned to 24 pens,with 10 birds/pen and 12 pens/*** were offered the experimental diets in 3 phases(starter,day 0 to 10;grower,day 11 to 24 and finisher,day 25 to 35).Excreta and digesta samples from the crop,gizzard,duodenum,jejunum,ileum and caeca were collected at 12 and 35 days of age,and analysed for the NSP *** wheat-based diet contained higher levels of soluble NSP than the maize-based diet,whereas insoluble NSP levels were similar between the 2 *** analysis of NSP constituents revealed that arabinoxylans were the primary NSP in the wheat-based diet,mostly in insoluble *** were the predominant NSP in the maize-based diet,followed by ***,birds offered the wheatbased diet presented higher levels of soluble NSP remaining in all gut sections compared to birds offered the maize-based diet,at both 12 and 35 days of age(P<0.050).Accumulation of insoluble NSP in the gizzard was noted in birds fed both diets,but was more pronounced in birds offered the maize-based diet compared to the wheat-based diet,at both 12 and 35 days of age(P<0.001).The present study highlights marked differences in the amounts and types of NSP delivered to the different gut sections when feeding wheat-compared to maize-based diets,particularly in the gizzard and the lower GIT of birds.

关键词： Broiler chickens Soluble fibre Insoluble fibre Non-starch polysaccharides

Ileal profile of non-starch polysaccharides and oligosaccharides in response to exogenous enzymes in broiler chickens offered wheat-or maize-based diets under subclinical necrotic enteritis challenge

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Animal Nutrition 2022年第3期10卷 207-215页

The present study evaluated the impacts of fibre-degrading enzymes on the profiles of non-starch polysaccharides(NSP)and oligosaccharides(OS)in the ileum of broiler chickens offered wheat-or maize-based diets under subclinical necrotic enteritis(NE)challenge.A 224 factorial arrangement of treatments was *** were the following:NE challenge,no or yes;diet type,wheat-or maizebased;and supplemental enzymes,control(no enzyme),family 10 xylanase(XYN10),family 11 xylanase(XYN11)or b-mannanase(MAN).Birds in the challenged group were inoculated with Eimeria on d 9 and Clostridium perfringens on d 14 and 15.A 3-way interaction(P=0.047)occurred on overall(d 0 to 16)weight *** NE was present,all the supplemental enzymes increased weight gain in birds fed the wheat-based diet;whereas in those fed the maize-based diet supplemental XYN10 and XYN11 decreased weight *** NE was absent,birds fed the wheat-based diet supplemented with XYN10 or MAN presented increased weight gain compared to non-supplemented birds,but no improvements with enzyme addition were observed in birds fed the maize-based diet.A 3-way interaction(P=0.002)was observed on insoluble NSP level in the *** NE was absent,all the supplemental enzymes reduced the ileal level of insoluble NSP,regardless of diet *** the challenged birds,supplementing XYN10 and MAN reduced insoluble NSP level in the ileum,but only in birds fed the wheat-based *** soluble NSP level was reduced by supplemental XYN11 and MAN,but only in birds fed the wheatbased diet,resulting in a 2-way diet typeenzyme interaction(P<0.001).Ileal OS arabinose(P=0.030)level was highest in birds offered the wheat-based diet supplemented with ***,supplementation of NSP-degrading enzymes to the wheat-based diet enhanced bird performance regardless of NE challenge,with XYN11 significantly increasing oligosaccharide ***,enzyme addition did not improve growth performance in birds fed maize-based diet

关键词： Broiler chicken Non-starch polysaccharide Subclinical necrotic enteritis Oligosaccharide

Characterisation of undigested components throughout the gastrointestinal tract of broiler chickens fed either a wheat-or maizebased diet

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Animal Nutrition 2022年第1期8卷 153-159页

作者： Eunjoo Kim Natalie K.Morgan Amy F.Moss Lily Li Peter ader Mingan Choct School of Environmental and Rural Science University of New EnglandArmidaleNSW2351Australia BASF South East Asia038987Singapore BASF SE 68623LampertheimGermany

This study was to characterise the undigested nutrients present along the gastrointestinal tract of birds offered common wheat-or maize-based diets,with the goal of optimising utilisation of enzymes to enhance digestive ***-and maize-based diets were offered to 240 mixed-sex broilers(10 birds/pen;n=12)from 1 to 35 d *** of dry matter,starch,crude protein and nonstarch polysaccharides(NSP)were measured in the crop,gizzard,duodenum,jejunum,ileum,caeca and excreta at d 12 and 35 *** of nutrient levels in the excreta presented that more than 30%of nutrients provided in the feed was wasted,irrespective of wheat or maize diet *** average,92 g/kg crude protein,92 g/kg insoluble NSP and 14 g/kg oligosaccharides were not utilised by birds at d 12 *** quantity of water-insoluble NSP in the small intestine at d 12 was lower in birds offered the wheat-based diet compared to those fed the maize-based diet(P<0.05),with the reverse being true for water-soluble NSP(P<0.001).On average,84 g/kg crude protein,79 g/kg insoluble NSP and 9 g/kg oligosaccharides remained in the excreta at 35 d of *** this time period,accumulation of feed in the gizzard was noted for birds offered both diets,but was more pronounced in those offered the maize-based diet(P<0.001).Birds offered the maize-based diet demonstrated improved utilisation of oligosaccharides compared to those fed the wheat-based diet at both d 12 and 35(P=0.087 and P=0.047,respectively).Protein utilisation in the jejunum and ileum was greater in birds offered the wheat-based diet compared to those fed the maize-based diet(P=0.004 and P<0.001,respectively).Thus,while both diets supported standard growth performance of birds,the degree and flow of nutrient disappearance along the gastrointestinal tract was influenced by cereal type and bird age.

关键词： Broiler chicken Nutrient digestibility Undigested dietary component

A large epeiric methanogenic Bambuí sea in the core of Gondwana supercontinent?

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Geoscience Frontiers 2021年第1期12卷 203-218页

作者： Sergio Caetano-Filho Pierre Sansjofre Magali ader Gustavo M.Paula-Santos Cristian Guacaneme Marly Babinski Carolina Bedoya-Rueda Matheus Kuchenbecker Humberto L.S.Reis Ricardo I.F.Trindade Universidade de Sao Paulo Instituto de GeocienciasRua do Lago562-Sao Paulo05508-080Brazil MNHN Sorbonne UniversiteCNRS UMR 7590Institut de Mineralogiede Physique des Materiaux et de Cosmochimie75005ParisFrance Universite de Paris Institut de Physique du Globe de ParisCNRSF-75005ParisFrance Universidade Estadual de Campinas Instituto de GeocienciasRua Carlos Gomes250-Campinas13083-855Brazil Universidade Federal dos Vales do Jequitinhonha e Mucuri Instituto de Ciencia e TecnologiaLaboratorio de Estudos TectonicosRodovia MGT 367Km 583-Diamantina39100-000Brazil Universidade Federal de Ouro Preto Departamento de Geologia-Escola de MinasLaboratiorio de Modelagem TectonicaCampus Morro do Cruzeiro-Ouro Preto35400-000Brazil Universidade de Sao Paulo Instituto de AstronomiaGeofísica e Ciencias AtmosfericasRua do Matao1226-Sao Paulo05508-090Brazil

Carbon isotope compositions of both sedimentary carbonate and organic matter can be used as key proxies of the global carbon cycle and of its evolution through time,as long as they are acquired from waters where the dissolved inorganic carbon(DIC)is in isotope equilibrium with the atmospheric ***,in shallow water platforms and epeiric settings,the influence of local to regional parameters on carbon cycling may lead to DIG isotope variations unrelated to the global carbon *** may be especially true for the terminal Neoproterozoic,when Gondwana assembly isolated waters masses from the global ocean,and extreme positive and negative carbon isotope excursions are recorded,potentially decoupled from global *** improve our understanding on the type of information recorded by these excursions,we investigate the pairedδ^13Ccarb andδ^13Corg evolution for an increasingly restricted late Ediacaran-Cambrian foreland system in the West Gondwana interior:the basal Bambui *** succession represents a 1~(st)-order sedimentary sequence and records two majorδ^13Ccarb excursions in its two lowermost lower-rank *** basal cap carbonate interval at the base of the first sequence,deposited when the basin was connected to the ocean,hosts antithetical negative and positive excursions forδ^13Ccarb andδ^13Corg,respectively,resulting inΔ^13C values lower than 25‰.From the top of the basal sequence upwards,an extremely positiveδ^13Ccarb excursion is coupled toδ^13Corg,reaching values of+14‰and-14‰,*** positive excursion represents a remarkable basin-wide carbon isotope feature of the Bambui Group that occurs with only minor changes inΔ^13C values,suggesting change in the DIC isotope *** argue that this regional isotopic excursion is related to a disconnection between the intrabasinal and the global carbon *** extreme carbon isotope excursion may have been a product of a disequilibria between the basin DIC and atmospheric CO2

关键词： Methanogenesis Ediacaran Cambrian Carbon isotopes Sao Francisco Basin Bambui Group

Pre-operative total parenteral nutrition improves post-operative outcomes in a subset of Crohn’s disease patients undergoing major abdominal surgery

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Gastroenterology Report 2019年第2期7卷 107-114,I0002页

作者： Fares Ayoub Amir Y.Kamel Ahmed Ouni Naueen Chaudhry Yan ader Sanda Tan Atif Iqbal Ellen M.Zimmermann Sarah C.Glover Department of Medicine University of FloridaGainesvilleFLUSA Department of Pharmacy University of FloridaGainesvilleFLUSA Division of Gastroenterology Hepatology&NutritionDepartment of MedicineUniversity of FloridaGainesvilleFLUSA Department of Surgery University of FloridaGainesvilleFLUSA

Background:Despitemajor advances in themedicalmanagement of Crohn’s disease(CD),a significant proportion of patients will require surgery within 5 years of *** is an independent risk factor for adverse post-operative outcomes following gastrointestinal *** on the value of pre-operative total parenteral nutrition(TPN)in CD patients aremixed and there is a paucity of data in the biologic *** aimed to define the role of pre-operative TPN in this ***:This was a retrospective cohort study conducted at a tertiary referral *** patients who underwent major abdominal surgery were *** receiving pre-operative TPN were compared to *** compared the incidence of 30-day infectious and non-infectious post-operative complications between the two ***:A total of 144 CD patients who underwent major abdominal surgery between March 2007 and March 2017 were ***-five patients who received pre-operative TPN were compared to 89 ***-one(14.6%)patients developed infectious complications(18.2%in TPN group vs 12.3%in non-TPN group,P=0.34)and 23(15.9%)developed noninfectious complications(14.5%in TPN group vs 16.9%in non-TPN group,P=0.71).In a multivariate analysis,controlling for differences in baseline disease severity and malnutrition between groups,patients receiving pre-operative TPN for60 days had significantly lower odds of developing non-infectious complications(odds ratio 0.07,95%confidence interval:0.01–0.80,P=0.03).Weight loss of>10%in the past 6 months was a significant predictor of post-operative ***:In a subset of malnourished CD patients,TPN is safe and allows comparable operative outcomes to ***-operative TPN for60 days reduced post-operative non-infectious complications without associated increase in infectious complications.

关键词： Crohn’s disease total parenteral nutrition pre-operative malnutrition post-operative complications

The Influence of Polyurethane Foam on the Insulation Characteristics of Mortar Pastes

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