[1] 姜富贵,成海建,刘栋,等.不同收获期对全株玉米青贮营养价值、发酵品质和瘤胃降解率的影响[J].动物营养学报,2019,31(6):2807-2815. JIANG F G,CHENG H J,LIU D,et al.Effects of different harvest stages on nutritional value,fermentation quality and rumen degradability of whole corn silage[J].Chinese Journal of Animal Nutrition,2019,31(6):2807-2815.(in Chinese)
[2] MUCK R E,NADEAU E M G,MCALLISTER T A,et al.Silage review:recent advances and future uses of silage additives[J].Journal of Dairy Science,2018,101(5):3980-4000.

[3] GUAN H,YAN Y H,LI X L,et al.Microbial communities and natural fermentation of corn silages prepared with farm bunker-silo in Southwest China[J].Bioresource Technology,2018,265:282-290.
[4] 姜富贵,成海建,张清峰,等.山东省养牛场全株玉米青贮加工利用技术的调查分析[J].山东农业科学,2018,50(12):132-137. JIANG F G,CHENG H J,LIU D,et al.Investigation of processing technology of whole corn silage in cattle farms in Shandong province[J].Shandong Agricultural Sciences,2018,50(12):132-137.(in Chinese)
[5] 张秀芬.饲草饲料加工与贮藏[M].北京:中国农业出版社,1992. ZHANG X F.Forage feed processing and storage[M].Beijing:China Agriculture Press,1992.(in Chinese)
[6] 洪梅,刁其玉,屠焰.青贮饲料添加剂的种类与作用特点[C]//2010全国养羊生产与学术研讨会论文集.银川:中国畜牧兽医学会,2010:24-26. HONG M,DIAO Q Y,TU Y.Types and function characteristics of silage additives[C]//Proceedings of the National Sheep Production and Academic Seminar of Sheep Raising Branch of Chinese Association of Animal Science and Veterinary Medicine.Yinchuan:Chinese Association of Animal Science and Veterinary Medicine,2010:24-26.(in Chinese)
[7] 蔡辉益,王晓红.饲料添加剂研究与应用新技术[M].北京:中国农业出版社,2016. CAI H Y,WANG X H.Feed additives research and application of new technology[M].Beijing:China Agriculture Press,2016.(in Chinese)
[8] 和立文.全株玉米青贮品质评价及其对肉牛育肥性能和牛肉品质的影响[D].博士学位论文.北京:中国农业大学,2017. HE L W.Quality evaluation of corn silage and its effect on the growth performance and beef quality of finishing cattle[D].Ph.D.Thesis.Beijing:China Agricultural University,2017.(in Chinese)
[9] 臧艳运,王雁,顾雪莹,等.添加丙酸和尿素对玉米青贮品质的影响[J].草业科学,2012,29(1):156-159. ZANG Y Y,WANG Y,GU X Y,et al.Effects of propionic acid and urea on the quality of whole-crop corn silage[J].Pratacultural Science,2012,29(1):156-159.(in Chinese)
[10] 王建福,雷赵民,万学瑞,等.5株乳酸菌复合物与CaCO
3,酶及尿素不同组合对全株玉米青贮品质影响[J].草业学报,2018,27(3):90-97. WANG J F,LEI Z M,WAN X R,et al.Effects on the quality of corn silage,of 5 strains of lactic acid bacteria with different combinations of added CaCO
3,enzyme and urea[J].Acta Prataculturae Sinica,2018,27(3):90-97.(in Chinese)
[11] AOAC.Official method of analysis[S].18th ed.Washington,D.C.:Association of Officiating Analytical Chemists,2005.
[12] VAN SOEST P J,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.

[13] DUBOIS M,GILLES K A,HAMILTON J K,et al.Colorimetric method for determination of sugars and related substances[J].Analytical Chemistry,1956,28(3):350-356.

[14] 郭冬生.反刍动物日粮组合效应对瘤胃发酵和可利用粗蛋白的影响研究[D].硕士学位论文.北京:中国农业大学,2004. GUO D S.Influence of associated effects on utilizable crude protein of feeds for ruminants and rumen fermentation
in vitro[D].Master's Thesis.Beijing:China Agricultural University,2004.(in Chinese)
[15] NRC.Nutrient requirements of beef cattle[S].8th ed.Washington,D.C.:National Academy Press,2016.
[16] SNIFFEN C J,O'CONNOR J D,VAN SOEST P J,et al.A net carbohydrate and protein system for evaluating cattle diet:Ⅱ.Carbohydrate and protein availability[J].Journal of Animal Science,1992,70(11):3562-3577.

[17] 王菲.肉牛饲料有效能值预测模型的建立与评价[D].博士学位论文.北京:中国农业大学,2016. WANG F.Estblishment and evaluation of effective energy prediction model in feeds of beef cattle[D].Ph.D.Thesis.Beijing:China Agricultural University,2016.(in Chinese)
[18] UNDERSANDER D J,MERTENS D R,THIEX N J.Forage analyses procedures[Z].Florida:National Forage Testing Association (USA),1993.
[19] WEATHERBURN M W.Phenol-hypochlorite reaction for determination of ammonia[J].Analytical Chemistry,1967,39(8):971-974.

[20] WANG J,CHEN L,YUAN X J,et al.Effects of molasses on the fermentation characteristics of mixed silage prepared with rice straw,local vegetable by-products and alfalfa in Southeast China[J].Journal of Integrative Agriculture,2017,16(3):664-670.

[21] 孙红,于应文,马向丽.黔西北岩溶区九种灌木综合营养价值评价[J].草业学报,2014,23(5):99-106. SUN H A,YU Y W MA X L.et al.A comprehensive evaluation of nutritional value of nine shrubs in the karst area of northwest
Guizhou[J].Acta Prataculturae Sinica,2014,23(5):99-106.(in Chinese)
[22] 王坤,张开展,刘士杰.氯化铵在畜牧生产中的应用研究[J].中国饲料,2016(3):17-19. WANG K,ZHANG K Z,LIU S J.Research on application of ammonium chloride in livestock production[J].China Feed,2016(3):17-19.(in Chinese)
[23] 谭树义,魏立民,王峰,等.尿素对苏丹草青贮发酵品质的影响[J].中国饲料,2014(17):18-19,22. TAN S Y,WEI L M,WANG F,et al.Effect of urea on fermentation quality of Sudan grass silage[J].China Feed,2014(17):18-19,22.(in Chinese)
[24] 余梅,刘建勇,黄必志,等.不同处理方式对蔗梢营养价值的影响[J].中国牛业科学,2010,36(5):19-21,29. YU M,LIU J Y,HUANG B Z,et al.Effects on sugarcane top's nutritive value by different disposal ways[J].China Cattle Science,2010,36(5):19-21,29.(in Chinese)
[25] 杨晓莉,刘敏,杨新君,等.青贮葡萄渣水分和尿素适宜添加量的研究[J].饲料研究,2014(7):67-69. YANG X L,LIU M,YANG X J,et al.Study on the appropriate addition amount of moisture and urea in silage grape pomace[J].Feed Research,2014(7):67-69.(in Chinese)
[26] 玉柱,孙启忠,于艳冬,等.添加尿素和乳酸菌制剂对玉米秸秆青贮料品质的影响[J].中国畜牧杂志,2009,45(3):37-40. YU Z,SUN Q Z,YU Y D,et al.Effects of urea and lactic acid bacteria on the quality of corn stalk silages[J].Chinese Journal of Animal Science,2009,45(3):37-40.(in Chinese)
[27] 朱欣,郝俊,刘洪来,等.6种不同添加物对甘蔗叶梢青贮发酵品质的影响[J].草地学报,2015,23(2):407-413. ZHU X,HAO J,LIU H L,et al.Effects of six different additives on the silage fermented quality of sugarcane top[J].Acta Agrectir Sinica,2015,23(2):407-413.(in Chinese)
[28] 张一为,孙少华,赵国先,等.尿素对草莓渣与花生秧混贮有氧稳定性的影响[J].饲料研究,2015(12):72-74. ZHANG Y W,SUN S H,ZHAO G X,et al.Effect of urea on the aerobic stability of strawberry residue and peanut seedling mixed storage[J].Feed Research,2015(12):72-74.(in Chinese)
[29] 田汉晨,陈奕业,邓铭,等.不同添加剂对皇竹草青贮营养价值的影响[J].饲料研究,2019,42(8):40-42. TIAN H C,CHEN Q Y,DENG M,et al.Effect of different additives on the nutritive value of pennisetum hydridum silage[J].Feed Research,2019,42(8):40-42.(in Chinese)
[30] 王雨琼,王敏玲,周道玮.添加丙酸钙和尿素对玉米秸秆黄储发酵品质的影响[J].河南农业大学学报,2017,51(5):662-666. WANG Y Q,WANG M L,ZHOU D W.Effect of different additives on the nutritive value of
Pennisetum hydridum silage[J].Henan Agricultural University,2017,51(5):662-666.(in Chinese)
[31] 琚泽亮,赵桂琴,覃方锉,等.青贮时间及添加剂对高寒牧区燕麦-箭筈豌豆混播捆裹青贮发酵品质的影响[J].草业学报,2016,25(6):148-157. JU Z L,ZHAO G Q,TAN F C,et al.Effects of silage time and additives on fermentation quality of oat-farrow pea mixed-sown bale-wrapped silage in alpine pasture area[J].Acta Agrectir Sinica,2016,25(6):148-157.(in Chinese)
[32] 荣辉,余成群,李志华,等.添加糖蜜和尿素对象草青贮发酵品质的影响[J].草地学报,2012,20(5):940-946. RONG H,YU C Q,LI Z H,et al.Effect of adding molasses and urea on the fermentation quality of grass silage[J].Acta Agrectir Sinica,2012,20(5):940-946.(in Chinese)
[33] DER BEDROSIAN M C,NESTOR K E,Jr,KUNG L,Jr.The effects of hybrid,maturity,and length of storage on the composition and nutritive value of corn silage[J].Journal of Dairy Science,2012,95(9):5115-5126.

[34] 苗树君,马慧.不同生物制剂处理去穗玉米秸青贮对奶牛营养价值的影响[J].中国牛业科学,2008,34(5):27-30. MIAO S J,MA H.The effect of different bio-agent on the nutritional value of corn stover silage for dairy cattle[J].China Cattle Science,2008,34(5):27-30.(in Chinese)