Supplementing oat hulls to the diet of suckling piglets altered their intestinal tract and colonic microbiota development  

作　　者：Hubèrt M.J.van Hees Koen Chiers Leo A.den Hartog Theo A.T.G.van Kempen Dominiek Maes Sam Millet Geert P.J.Janssens 

机构地区：[1]Department of Veterinary and Biosciences,Ghent University,Merelbeke,Belgium [2]Trouw Nutrition Research and Development,Amersfoort,the Netherlands [3]Department of Pathology,Ghent University,Merelbeke,Belgium [4]Animal Nutrition,Wageningen University and Research,Wageningen,the Netherlands [5]Department of Animal Science,North Carolina State University,Raleigh,NC,USA [6]Department of Reproduction,Obstetrics and Herd Health,Ghent University,Merelbeke,Belgium [7]ILVO(Flanders Research Institute for Agriculture,Fisheries and Food),Melle,Belgium

出　　处：《Animal Nutrition》2023年第1期284-296,共13页动物营养（英文版）

摘　　要：Current study evaluated the effect of a fine and coarsely ground insoluble dietary fibre source on the gastrointestinal development of suckling pigs.Oat hulls(OH)were selected as a model feedstuff,rich in cellulose,lignin,and insoluble dietary fibre.Three experimental supplemental diets were formulated:a finely ground,low fibre and nutrient dense diet served as control(CON).For the 2 high fibre diets,15%heat-treated starch in CON was exchanged with OH,either finely(OH-f)or coarsely ground(OH-c).Litters of 10 primi-and multiparous sows(mean litter size 14.6±0.84)were used.Within a litter,experimental diets were allotted to triplets of 4 piglets.From approximately 12 d of age,piglets’individual feed intakes were recorded 2 times per day when separated from their dam for 70 min.Piglets could suckle with their dam for the remainder of the day.On d 24 and 25,from the total pool of 120 piglets,seven healthy well-eating piglets per treatment were selected for post-mortem evaluation,resulting in 14 replicates per treatment.Consumption of OH-c and OH-f did not impede clinical health and production performance of piglets.The full stomach weights tended to be greater for OH-c compared to OH-f whereas CON was intermediate(P=0.083).Supplementing OH significantly increased ileal villus height and caecal dry matter concentration(P<0.05).For the colon,OH increased its length,contents weight,short-chain fatty acid concentration and reduced total bacterial count as well asγ-proteobacteria count and proportion(P<0.05).The OH-c treatment specifically increased full gastrointestinal tract weight and caecum contents weight compared to piglets fed CON and OH-f.Furthermore,OH-c reduced colonic crypt depth when compared to OH-f(P=0.018).In conclusion,supplementing OH to a diet for suckling piglets exerted subtle developmental effects on gastrointestinal morphology and colonic microbial community.These effects were largely independent from the particle size of the OH.

关 键 词：Oat hull Insoluble fibre Gastrointestinal development Suckling piglet 

分 类 号：S828.5[农业科学—畜牧学]