[1] ZHANG Z W, ZHAN Y D, HAN Y, et al.Estimation of liveweight from body measurements through best fitted regression model in
Dezhou donkey breed[J].Journal of Equine Veterinary Science, 2021, 101:103457.
[2] HARRIS P A, ELLIS A D, FRADINHO M J, et al.Review:feeding conserved forage to horses:recent advances and recommendations[J].Animal, 2017, 11(6):958-967.

[3] GLINSKY M J, SMITH R M, SPIRES H R, et al.Measurement of volatile fatty acid production rates in the cecum of the pony[J].Journal of Animal Science, 1976, 42(6):1465-1470.

[4] EDWARDS J E, SHETTY S A, VAN DEN BERG P, et al.Multi-kingdom characterization of the core equine fecal microbiota based on multiple equine (sub) species[J].Animal Microbiome, 2020, 2(1):6.
[5] YUE Q, YANG H J, CAO Y C, et al.Feruloyl and acetyl esterase production of an anaerobic rumen fungus
Neocallimastix sp. YQ2 effected by glucose and soluble nitrogen supplementations and its potential in the hydrolysis of fibrous feedstuffs[J].Animal Feed Science and Technology, 2009, 153(3/4):263-277.
[6] 苏少锋.蒙古马胃肠道细菌群落组成及纤维素分解菌的研究[D].博士学位论文.呼和浩特:内蒙古农业大学, 2019. SU S F.Characterization of gastrointestinal bacterial community and cellulose-decomposing bacteria in Mongolian horses[D].Ph.D.Thesis.Hohhot:Inner Mongolia Agricultural University, 2019.(in Chinese)
[7] 白洪志.降解纤维素菌种筛选及纤维素降解研究[D].博士学位论文.哈尔滨:哈尔滨工业大学, 2008. BAI H Z.Screening of cellulose degradation fungi and the study of its degradation characteristics[D].Ph.D.Thesis.Harbin:Harbin Institute of Technology, 2008.(in Chinese)
[8] 荆常亮, 李福昌, 王雪鹏, 等.日粮ADF水平对断奶至3月龄獭兔生长性能、氮代谢、纤维素酶活和盲肠发酵的影响[J].畜牧兽医学报, 2013, 44(9):1417-1424. JING C L, LI F C, WANG X P, et al.Effects of dietary ADF levels on growth performance, nitrogen metabolism, cellulase activity and caecum fermentation of Rex rabbits from weaning to 3-month-old[J].Acta Veterinaria et Zootechnica Sinica, 2013, 44(9):1417-1424.(in Chinese)
[9] 刘利林.日粮粗饲料水平对新疆驴饲料养分消化代谢与盲肠发酵特性的影响[D].博士学位论文.北京:中国农业大学, 2020. LIU L L.The effect of dietary forage level on nutrient digestion and metabolism and caecal fermentation characteristics in
Xinjiang donkeys[D].Ph.D.Thesis.Beijing:China Agricultural University, 2020.(in Chinese)
[10] BARTOLOME B, FAULDS C B, TUOHY M, et al.Influence of different xylanases on the activity of ferulic acid esterase on wheat bran[J].Biotechnology and Applied Biochemistry, 1995, 22(1):65-73.
[11] WILLIAMSON G, KROON P A, FAULDS C B.Hairy plant polysaccharides:a close shave with microbial esterases[J].Microbiology, 1998, 144(Pt 8):2011-2023.
[12] 梁婷玉.驴胃肠道组织形态、酶活及微生物区系研究[D].硕士学位论文.兰州:甘肃农业大学, 2019. LIANG T Y.Study on gastrointestinal tract mucosal morphology, enzyme activity and microflora of donkeys[D].Master's Thesis.Lanzhou:Gansu Agricultural University, 2019.(in Chinese)
[13] 任清长.孕酮在瘤胃的转化及其对微生物消化代谢的调节作用[D].博士学位论文.北京:中国农业大学, 2014. REN Q C.Microbial transformation of progesterone in the rumen and its regulation in microbial digestion and metabolism[D].Ph.D.Thesis.Beijing:China Agricultural University, 2014.(in Chinese)
[14] PEARSON R A, ARCHIBALD R F, MUIRHEAD R H.The effect of forage quality and level of feeding on digestibility and gastrointestinal transit time of oat straw and alfalfa given to ponies and donkeys[J].The British Journal of Nutrition, 2001, 85(5):599-606.

[15] MIYAJI M, UEDA K, HATA H, et al.Effect of grass hay intake on fiber digestion and digesta retention time in the hindgut of horses[J].Journal of Animal Science, 2014, 92(4):1574-1581.

[16] 陈洪洋, 蔡俊, 林建国, 等.木聚糖酶的研究进展[J].中国酿造, 2016, 35(11):1-6. CHEN H Y, CAI J, LIN J G, et al.Research progress of xylanase[J].China Brewing, 2016, 35(11):1-6.(in Chinese)
[17] 黎大洪.不同日粮饲喂条件下荷斯坦肉牛瘤胃微生物发酵阿魏酸酯酶昼夜变化规律研究[D]. 硕士学位论文.北京:中国农业大学, 2009. LI D H.Diurnal variations of ferulic acid esterase activities in rumen fermentation effected by rations intaked in Holstein cattle[D].Master's Thesis.Beijing:China Agricultural University, 2014.(in Chinese)
[18] ARGENZIO R A, SOUTHWORTH M, STEVENS C E.Sites of organic acid production and absorption in the equine gastrointestinal tract[J].The American Journal of Physiology, 1974, 226(5):1043-1050.

[19] VAN GYLSWYK N O.The effect of supplementing a low-protein hay on the cellulolytic bacteria in the rumen of sheep and on the digestibility of cellulose and hemicellulose[J].The Journal of Agricultural Science, 1970, 74(1):169-180.