[1] SHANG Q H,MA X K,LIU H S,et al.Effect of fibre sources on performance,serum parameters,intestinal morphology,digestive enzyme activities and microbiota in weaned pigs[J].Archives of Animal Nutrition,2020,74(2):121-137.

[2] JHA R,FOUHSE J M,TIWARI U P,et al.Dietary fiber and intestinal health of monogastric animals[J].Frontiers in Veterinary Science,2019,6:48.
[3] CHEN T T,CHEN D W,TIAN G,et al.Effects of soluble and insoluble dietary fiber supplementation on growth performance,nutrient digestibility,intestinal microbe and barrier function in weaning piglet[J].Animal Feed Science and Technology,2020,260:114335.
[4] TIAN M,CHEN J M,LIU J X,et al.Dietary fiber and microbiota interaction regulates sow metabolism and reproductive performance[J].Animal Nutrition,2020,6(4):397-403.

[5] REBELLO C J,O'NEIL C E,GREENWAY F L.Dietary fiber and satiety:the effects of oats on satiety[J].Nutrition Reviews,2016,74(2):131-147.

[6] AGYEKUM A K,COLUMBUS D A,FARMER C,et al.Effects of supplementing processed straw during late gestation on sow physiology,lactation feed intake,and offspring body weight and carcass quality[J].Journal of Animal Science,2019,97(9):3958-3971.

[7] TAN C Q,SUN H Q,WEI H K,et al.Effects of soluble fiber inclusion in gestation diets with varying fermentation characteristics on lactational feed intake of sows over two successive parities[J].Animal,2018,12(7):1388-1395.

[8] HIPSLEY E H.Dietary "fibre" and pregnancy toxaemia[J].The British Medical Journal,1953,2(4833):420-422.

[9] Codex Alimentarius Committee.Guidelines on nutrition labelling CAC/GL 2-1985 as last amended 2010[S].Rome,Italy:FAO,2010.
[10] VAN SOEST P V,ROBERTSON J B,LEWIS B A.Methods for dietary fiber,neutral detergent fiber,and nonstarch polysaccharides in relation to animal nutrition[J].Journal of Dairy Science,1991,74(10):3583-3597.

[11] MUDGIL D,BARAK S.Composition,properties and health benefits of indigestible carbohydrate polymers as dietary fiber:a review[J].International Journal of Biological Macromolecules,2013,61:1-6.
[12] 蔡松铃,刘琳,战倩,等.膳食纤维的黏度特性及其生理功能研究进展[J].食品科学,2020,41(3):224-231. CAI S L,LIU L,ZHAN Q,et al.Viscosity characteristics and physiological functions of dietary fiber:a review[J].Food Science,2020,41(3):224-231.(in Chinese)
[13] 乔汉桢,刘佳文,王迪,等.膳食纤维的理化功能特性及甘薯膳食纤维在动物生产中的应用[J].中国畜牧杂志,2019,55(10):25-29. QIAO H Z,LIU J W,WANG D,et al.Physiochemical and functional properties of dietary fiber and application of sweet potato fiber in animal production[J].Chinese Journal of Animal Science,2019,55(10):25-29. (in Chinese)
[14] SOLÀ-ORIOL D,GASA J.Feeding strategies in pig production:sows and their piglets[J].Animal Feed Science and Technology,2017,233:34-52.
[15] SAPKOTA A,MARCHANT-FORDE J N,RICHERT B T,et al.Including dietary fiber and resistant starch to increase satiety and reduce aggression in gestating sows[J].Journal of Animal Science,2016,94(5):2117-2127.

[16] HUANG S B,WEI J F,YU H Y,et al.Effects of dietary fiber sources during gestation on stress status,abnormal behaviors and reproductive performance of sows[J].Animals,2020,10(1):141.
[17] SUN H Q,TAN C Q,WEI H K,et al.Effects of different amounts of konjac flour inclusion in gestation diets on physio-chemical properties of diets,postprandial satiety in pregnant sows,lactation feed intake of sows and piglet performance[J].Animal Reproduction Science,2015,152:55-64.
[18] WIJLENS A G M,ERKNER A,ALEXANDER E,et al.Effects of oral and gastric stimulation on appetite and energy intake[J].Obesity,2012,20(11):2226-2232.

[19] GELIEBTER A,GRILLOT C L,AVIRAM-FRIEDMAN R,et al.Effects of oatmeal and corn flakes cereal breakfasts on satiety,gastric emptying,glucose,and appetite-related hormones[J].Annals of Nutrition and Metabolism,2015,66(2/3):93-103.
[20] HOWARTH N C,SALTZMAN E,ROBERTS S B.Dietary fiber and weight regulation[J].Nutrition Reviews,2001,59(5):129-139.
[21] ZHANG Y Y,LU T F,HAN L X,et al.
L-glutamine supplementation alleviates constipation during late gestation of mini sows by modifying the microbiota composition in feces[J].Biomed Research International,2017,2017:4862861.
[22] PEARODWONG P,MUNS R,TUMMARUK P.Prevalence of constipation and its influence on post-parturient disorders in tropical sows[J].Tropical Animal Health and Production,2016,48(3):525-531.

[23] TABELING R,SCHWIER S,KAMPHUES J.Effects of different feeding and housing conditions on dry matter content and consistency of faeces in sows[J].Journal of Animal Physiology and Animal Nutrition,2003,87(3/4):116-121.
[24] TAN C Q,WEI H K,SUN H Q,et al.Effects of supplementing sow diets during two gestations with konjac flour and
Saccharomyces boulardii on constipation in peripartal period,lactation feed intake and piglet performance[J].Animal Feed Science and Technology,2015,210:254-262.
[25] OLIVIERO C,KOKKONEN T,HEINONEN M,et al.Feeding sows with high fibre diet around farrowing and early lactation:impact on intestinal activity,energy balance related parameters and litter performance[J].Research in Veterinary Science,2009,86(2):314-319.

[26] JIANG X Y,LU N S,XUE Y,et al.Crude fiber modulates the fecal microbiome and steroid hormones in pregnant
Meishan sows[J].General and Comparative Endocrinology,2019,277:141-147.
[27] DREHER M L.Fiber in laxation and constipation[M]//DREHER M L.Dietary fiber in health and disease.Cham:Humana Press,2018:95-115.
[28] LAN J H,WANG K L,CHEN G Y,et al.Effects of inulin and isomalto-oligosaccharide on diphenoxylate-induced constipation,gastrointestinal motility-related hormones,short-chain fatty acids,and the intestinal flora in rats[J].Food & Function,2020,11(10):9216-9225.

[29] WEAVER A C,KELLY J M,KIND K L,et al.Oocyte maturation and embryo survival in nulliparous female pigs (gilts) is improved by feeding a lupin-based high-fibre diet[J].Reproduction,Fertility and Development,2013,25(8):1216-1223.

[30] FERGUSON E M,SLEVIN J,EDWARDS S A,et al.Effect of alterations in the quantity and composition of the pre-mating diet on embryo survival and foetal growth in the pig[J].Animal Reproduction Science,2006,96(1/2):89-103.
[31] CAO M,ZHUO Y,GONG L C,et al.Optimal dietary fiber intake to retain a greater ovarian follicle reserve for gilts[J].Animals,2019,9(11):881.
[32] ZHUO Y,SHI X L,LV G,et al.Beneficial effects of dietary soluble fiber supplementation in replacement gilts:pubertal onset and subsequent performance[J].Animal Reproduction Science,2017,186:11-20.
[33] RENTERIA-FLORES J A,JOHNSTON L J,SHURSON G C,et al.Effect of soluble and insoluble dietary fiber on embryo survival and sow performance[J].Journal of Animal Science,2008,86(10):2576-2584.

[34] ADLERCREUTZ H.Hepatic metabolism of estrogens in health and disease[J].The New England Journal of Medicine,1974,290(19):1081-1083.

[35] ZENGUL A G,DEMARK-WAHNEFRIED W,BARNES S,et al.Associations between dietary fiber,the fecal microbiota and estrogen metabolism in postmenopausal women with breast cancer[J].Nutrition and Cancer,2020:1-10,doi:10.1080/01635581.2020.1784444.
[36] ARTS C J M,GOVERS C A R L,VAN DEN BERG H,et al.
In vitro binding of estrogens by dietary fiber and the
in vivo apparent digestibility tested in pigs[J].The Journal of Steroid Biochemistry and Molecular Biology,1991,38(5):621-628.

[37] LEWIS S J,HEATON K W,OAKEY R E,et al.Lower serum oestrogen concentrations associated with faster intestinal transit[J].British Journal of Cancer,1997,76(3):395-400.

[38] FERGUSON E M,SLEVIN J,HUNTER M G,et al.Beneficial effects of a high fibre diet on oocyte maturity and embryo survival in gilts[J].Reproduction,2007,133(2):433-439.

[39] HOLT J P,JOHNSTON L J,BAIDOO S K,et al.Effects of a high-fiber diet and frequent feeding on behavior,reproductive performance,and nutrient digestibility in gestating sows[J].Journal of Animal Science,2006,84(4):946-955.

[40] QUESNEL H,MEUNIER-SALAÜN M C,HAMARD A,et al.Dietary fiber for pregnant sows:influence on sow physiology and performance during lactation[J].Journal of Animal Science,2009,87(2):532-543.

[41] VEUM T L,CRENSHAW J D,CRENSHAW T D,et al.The addition of ground wheat straw as a fiber source in the gestation diet of sows and the effect on sow and litter performance for three successive parities[J].Journal of Animal Science,2009,87(3):1003-1012.
[42] LOISEL F,FARMER C,RAMAEKERS P,et al.Effects of high fiber intake during late pregnancy on sow physiology,colostrum production,and piglet performance[J].Journal of Animal Science,2013,91(11):5269-5279.

[43] FEYERA T,HØJGAARD C K,VINTHER J,et al.Dietary supplement rich in fiber fed to late gestating sows during transition reduces rate of stillborn piglets[J].Journal of Animal Science,2017,95(12):5430-5438.

[44] CHENG C S,WEI H K,XU C H,et al.Maternal soluble fiber diet during pregnancy changes the intestinal microbiota,improves growth performance,and reduces intestinal permeability in piglets[J].Applied and Environmental Microbiology,2018,84(17):e01047-18.
[45] OELKE C A,RIBEIRO A M L,NORO M,et al.Effect of different levels of total dietary fiber on the performance of sows in gestation and lactation[J].Revista Brasileira de Zootecnia,2018,47:e20170299.
[46] SHANG Q H,LIU H S,LIU S J,et al.Effects of dietary fiber sources during late gestation and lactation on sow performance,milk quality,and intestinal health in piglets[J].Journal of Animal Science,2019,97(12):4922-4933.

[47] ZHUO Y,FENG B,XUAN Y D,et al.Inclusion of purified dietary fiber during gestation improved the reproductive performance of sows[J].Journal of Animal Science and Biotechnology,2020,11:147.
[48] LIU Y,CHEN N,LI D,et al.Effects of dietary soluble or insoluble fiber intake in late gestation on litter performance,milk composition,immune function,and redox status of sows around parturition[J].Journal of Animal Science,2020,98(10):skaa303.
[49] LI H,LIU Z J,LYU H W,et al.Effects of dietary inulin during late gestation on sow physiology,farrowing duration and piglet performance[J].Animal Reproduction Science,2020,219:106531.
[50] WU J,XIONG Y,ZHONG M,et al.Effects of purified fibre-mixture supplementation of gestation diet on gut microbiota,immunity and reproductive performance of sows[J].Journal of Animal Physiology and Animal Nutrition,2020,104(4):1144-1154.

[51] MOU D L,LI S,YAN C,et al.Dietary fiber sources for gestation sows:evaluations based on combined
in vitro and
in vivo methodology[J].Animal Feed Science and Technology,2020,269:114636.
[52] 齐梦凡,娄春华,朱晓艳,等.不同苜蓿草粉水平对初产母猪生产和繁殖性能的影响[J].草业学报,2018,27(10):158-170. QI M F,LOU C H,ZHU X Y,et al.Effect of different levels of alfalfa meal on productivity and reproductive performance of primiparous sows[J].Acta Prataculturae Sinica,2018,27(10):158-170. (in Chinese)
[53] 张志伟,张虎,黄大鹏.日粮粗纤维水平对妊娠母猪规癖行为及繁殖性能影响[J].家畜生态学报,2019,40(5):50-54. ZHANG Z H,ZHANG H,HUANG D P.The effects of dietary fiber levels on sow's behavioral stereotypes and their reproductive performance[J].Acta Ecologiae Animalis Domastici,2019,40(5):50-54. (in Chinese)
[54] XU C H,CHENG C S,ZHANG X,et al.Inclusion of soluble fiber in the gestation diet changes the gut microbiota,affects plasma propionate and odd-chain fatty acids levels,and improves insulin sensitivity in sows[J].International Journal of Molecular Sciences,2020,21(2):635.
[55] FEYERA T,ZHOU P,NUNTAPAITOON M,et al.Mammary metabolism and colostrogenesis in sows during late gestation and the colostral period[J].Journal of Animal Science,2019,97(1):231-245.

[56] LI Y,ZHANG L J,LIU H Y,et al.Effects of the ratio of insoluble fiber to soluble fiber in gestation diets on sow performance and offspring intestinal development[J].Animals,2019,9(7):422.
[57] 吴志娟,焦福林,李文刚,等.不同粗纤维水平对母猪繁殖性能的影响[J].中国猪业.2019,14(6):16-18. WU Z J,JIAO F L,LI W G,et al.Effects of different crude fiber levels on reproductive performance in sows[J].China Swine Industry,2019,14(6):16-18.(in Chinese)
[58] 薛永强,张辉华,王达,等.短链脂肪酸对肠道健康的调控机制及在动物生产中的应用[J].饲料工业,2020,41(19):18-22. XUE Y Q,ZHANG H H,WANG D,et al.Regulation mechanism of short-chain fatty acids on intestinal health and their application in animal production[J].Feed Industry,2020,41(19):18-22. (in Chinese)
[59] KOH A,DE VADDER F,KOVATCHEVA-DATCHARY P,et al.From dietary fiber to host physiology:short-chain fatty acids as key bacterial metabolites[J].Cell,2016,165(6):1332-1345.

[60] GARCÍA-MANTRANA I,SELMA-ROYO M,GONZÁLEZ S,et al.Distinct maternal microbiota clusters are associated with diet during pregnancy:impact on neonatal microbiota and infant growth during the first 18 months of life[J].Gut Microbes,2020,11(4):962-978.

[61] LEBLOIS J,MASSART S,LI B,et al.Modulation of piglets' microbiota:differential effects by a high wheat bran maternal diet during gestation and lactation[J].Scientific Reports,2017,7:7426.