[1] SORDILLO L M.Nutritional strategies to optimize dairy cattle immunity[J].Journal of Dairy Science, 2016, 99(6):4967-4982.

[2] BRIGELIUS-FLOHÉ R, MAIORINO M.Glutathione peroxidases[J].Biochimica et Biophysica Acta:General Subjects, 2013, 1830(5):3289-3303.

[3] SILVA J S, RODRIGUEZ F D, TRETTEL M, et al.Performance, carcass characteristics and meat quality of Nellore cattle supplemented with supranutritional doses of sodium selenite or selenium-enriched yeast[J].Animal, 2020, 14(1):215-222.

[4] KAMADA H, NONAKA I, UEDA Y, et al.Selenium addition to colostrum increases immunoglobulin G absorption by newborn calves[J].Journal of Dairy Science, 2007, 90(12):5665-5670.

[5] MISTRY H D, BROUGHTON PIPKIN F, REDMAN C W, et al.Selenium in reproductive health[J].American Journal of Obstetrics and Gynecology, 2012, 206(1):21-30.

[6] WICHTEL J J, CRAIGIE A L, FREEMAN D A, et al.Effect of selenium and lodine supplementation on growth rate and on thyroid and somatotropic function in dairy calves at pasture[J].Journal of Dairy Science, 1996, 79(10):1865-1872.

[7] HOEKSTRA W G.Biochemical function of selenium and its relation to vitamin E[J].Federation Proceedings, 1975, 34(11):2083-2089.
[8] SALMAN S, KHOL-PARISINI A, SCHAFFT H, et al.The role of dietary selenium in bovine mammary gland health and immune function[J].Animal Health Research Reviews, 2009, 10(1):21-34.

[9] GABEL-JENSEN C, GAMMELGAARD B, BENDAHL L, et al.Separation and identification of selenotrisulfides in epithelial cell homogenates by LC-ICP-MS and LC-ESI-MS after incubation with selenite[J].Analytical and Bioanalytical Chemistry, 2006, 384(3):697-702.

[10] 马森.谷胱甘肽过氧化物酶和谷胱甘肽转硫酶研究进展[J].动物医学进展, 2008, 29(10):53-56. MA S.Progress on GSH-Px and GST[J].Progress in Veterinary Medicine, 2008, 29(10):53-56.(in Chinese)
[11] GROMER S, EUBEL J K, LEE B L, et al.Human selenoproteins at a glance[J].Cellular and Molecular Life Sciences:CMLS, 2005, 62(21):2414-2437.

[12] CHABORY E, DAMON C, LENOIR A, et al.Mammalian glutathione peroxidases control acquisition and maintenance of spermatozoa integrity[J].Journal of Animal Science, 2010, 88(4):1321-1331.

[13] HOFFMANN P R, HÖGE S C, LI P A, et al.The selenoproteome exhibits widely varying, tissue-specific dependence on selenoprotein P for selenium supply[J].Nucleic Acids Research, 2007, 35(12):3963-3973.

[14] WINGLER K, MVLLER C, SCHMEHL K, et al.Gastrointestinal glutathione peroxidase prevents transport of lipid hydroperoxides in CaCo-2 cells[J].Gastroenterology, 2000, 119(2):420-430.

[15] BANSAL M P, OBORN C J, DANIELSON K G, et al.Evidence for two selenium-binding proteins distinct from glutathione peroxidase in mouse liver[J].Carcinogenesis, 1989, 10(3):541-546.

[16] 张夏明, 徐刚.微量元素硒与肾脏疾病关系的研究进展[J].浙江医学, 2018, 40(5):529-533, 549. ZHANG X M, XU G.Research progress on the relationship between trace element selenium and renal disease[J].Zhejiang Medical Journal, 2018, 40(5):529-533, 549.(in Chinese)
[17] HOLMGREN A.Redox regulation by thioredoxin and thioredoxin reductase[J].BioFactors, 2010, 11(1/2):63-64.
[18] MUSTACICH D, POWIS G.Thioredoxin reductase[J].The Biochemical Journal, 2000, 346(Pt 1):1-8.
[19] ARNÉR E S.Focus on mammalian thioredoxin reductases-important selenoproteins with versatile functions[J].Biochimica et Biophysica Acta:General Subjects, 2009, 1790(6):495-526.

[20] BINDOLIA A, RIGOBELLO M P, SCUTARI G, et al.Thioredoxin reductase:a target for gold compounds acting as potential anticancer drugs[J].Coordination Chemistry Reviews, 2009, 253(11/12):1692-1707.
[21] KÖHRLE J, JAKOB F, CONTEMPRÉ B, et al.Selenium, the thyroid, and the endocrine system[J].Endocrine Reviews, 2005, 26(7):944-984.

[22] AVERY J C, HOFFMANN P R.Selenium, selenoproteins, and immunity[J].Nutrients, 2018, 10(9):1203.
[23] SALMAN S, DINSE D, KHOL-PARISINI A, et al.Colostrum and milk selenium, antioxidative capacity and immune status of dairy cows fed sodium selenite or selenium yeast[J].Archives of Animal Nutrition, 2013, 67(1):48-61.

[24] 呼显生, 刘玉茹, 尹柏双, 等.酵母硒对奶牛血液抗氧化能力及泌乳性能的影响[J].畜牧与兽医, 2012, 44(12):54-56. HU X S, LIU Y R, YIN B S, et al.Effects of yeast selenium on blood antioxidant capacity and lactation performance of dairy cows[J].Animal Husbandry & Veterinary Medicine, 2012, 44(12):54-56.(in Chinese)
[25] WARKEN A C, LOPES L S, BOTTARI N B, et al.Mineral supplementation stimulates the immune system and antioxidant responses of dairy cows and reduces somatic cell counts in milk[J].Anais da Academia Brasileira de Ciências, 2018, 90(2):1649-1658.

[26] VEDOVATTO M, DA SILVA PEREIRA C, CORTADA NETO I M, et al.Effect of a trace mineral injection at weaning on growth, antioxidant enzymes activity, and immune system in Nellore calves[J].Tropical Animal Health and Production, 2020, 52(2):881-886.

[27] WANG D, JIA D Q, HE R H, et al.Association between serum selenium level and subclinical mastitis in dairy cattle[J].Biological Trace Element Research, 2021, 199(4):1389-1396.

[28] SORDILLO L M, HICKS C R, WILSON R, et al.Effects of selenium status on bovine mononuclear cell function[J].Zentralblatt Fur Veterinarmedizin Reihe A, 1993, 40(8):615-623.
[29] ARIBI M, MEZIANE W, HABI S, et al.Macrophage bactericidal activities against
Staphylococcus aureus are enhanced
in vivo by selenium supplementation in a dose-dependent manner[J].PLoS One, 2015, 10(9):e0135515.
[30] CHUNG S, ZHOU R H, WEBSTER T J.Green synthesized BSA-coated selenium nanoparticles inhibit bacterial growth while promoting mammalian cell growth[J].International Journal of Nanomedicine, 2020, 15:115-124.
[31] 倪丽丽.有机硒对奶牛瘤胃发酵、抗氧化功能及免疫功能的影响[D].硕士学位论文.呼和浩特:内蒙古农业大学, 2011. NI L L.Effects of organic selenium on rumen fermentation, antioxidant function and immune function in dairy cows[D].Master's Thesis.Hohhot:Inner Mongolia Agricultural University, 2011.(in Chinese)
[32] WHEELER M L, DEFRANCO A L.Prolonged production of reactive oxygen species in response to B cell receptor stimulation promotes B cell activation and proliferation[J].Journal of Immunology, 2012, 189(9):4405-4416.

[33] OGURA M, INOUE T, YAMAKI J, et al.Mitochondrial reactive oxygen species suppress humoral immune response through reduction of
CD19 expression in B cells in mice[J].European Journal of Immunology, 2017, 47(2):406-418.

[34] PLAZA-DÍAZ J, FONTANA L, GIL A.Human milk oligosaccharides and immune system development[J].Nutrients, 2018, 10(8):1038.
[35] WALLACE L G, BOBE G, VORACHEK W R, et al.Effects of feeding pregnant beef cows selenium-enriched alfalfa hay on selenium status and antibody titers in their newborn calves[J].Journal of Animal Science, 2017, 95(6):2408-2420.

[36] 王传蓉, 王加启, 赵国琦, 等.母牛补饲维生素E和硒对新生犊牛生长和免疫的影响[J].中国兽医学报, 2009, 29(12):1625-1628. WANG C R, WANG J Q, ZHAO G Q, et al.Effects of supplementary vitamin E and selenium for cows on growth and immune of neonatal calves[J].Chinese Journal of Veterinary Science, 2009, 29(12):1625-1628.(in Chinese)
[37] 吴凌, 夏成, 张洪友, 等.泌乳奶牛血浆硒水平与机体抗氧化和免疫功能的关系[J].中国兽医学报, 2015, 35(12):1974-1978. WU L, XIA C, ZHANG H Y, et al.Plasma Se level and its relationship with antioxidant and immune function in lactation cows[J].Chinese Journal of Veterinary Science, 2015, 35(12):1974-1978.(in Chinese)
[38] BATES A, WELLS M, LAVEN R A, et al.Reduction in morbidity and mortality of dairy calves from an injectable trace mineral supplement[J].The Veterinary Record, 2019, 184(22):680.
[39] GENTHER O N, HANSEN S L.The effect of trace mineral source and concentration on ruminal digestion and mineral solubility[J].Journal of Dairy Science, 2015, 98(1):566-573.

[40] LIU Y J, WANG C, LIU Q, et al.Effects of sodium selenite addition on ruminal fermentation, microflora and urinary excretion of purine derivatives in Holstein dairy bulls[J].Journal of Animal Physiology and Animal Nutrition, 2019, 103(6):1719-1726.

[41] ZHANG Z D, WANG C, DU H S, et al.Effects of sodium selenite and coated sodium selenite on lactation performance, total tract nutrient digestion and rumen fermentation in Holstein dairy cows[J].Animal, 2020, 14(10):2091-2099.

[42] WEI J Y, WANG J, LIU W, et al.Short communication:effects of different selenium supplements on rumen fermentation and apparent nutrient and selenium digestibility of mid-lactation dairy cows[J].Journal of Dairy Science, 2019, 102(4):3131-3135.

[43] 张清月, 武霞霞, 赵艳丽, 等.有机硒与无机硒对奶牛体外瘤胃发酵特性的影响[J].饲料与畜牧, 2018(11):48-55. ZHANG Q Y, WU X X, ZHAO Y L, et al.Effects of organic selenium and inorganic selenium on rumen fermentation characteristics of dairy cows
in vitro[J].Animal Agriculture, 2018(11):48-55.(in Chinese)
[44] 武霞霞.硒源及硒水平对奶牛体外瘤胃发酵及营养物质降解的影响[D].硕士学位论文.呼和浩特:内蒙古农业大学, 2012. WU X X.Effects of selenium sources and selenium levels on rumen fermentation and nutrient degradation
in vitro in dairy cows[D].Master's Thesis.Hohhot:Inner Mongolia Agricultural University, 2012.(in Chinese)
[45] 刘强, 黄应祥, 王聪, 等.包被硒对西门塔尔牛瘤胃发酵和尿嘌呤衍生物的影响[J].饲料工业, 2007, 28(18):6-8. LIU Q, HUANG Y X, WANG C, et al.Effects of dietary rumen-by-pass selenium supplementation on rumen fermentation and purine derivatives in Simmental steers[J].Feed Industry, 2007, 28(18):6-8.(in Chinese)
[46] 张颖, 姚旋, 宋宜云, 等.甲状腺激素与代谢调控[J].生命科学, 2013, 25(2):176-183. ZHANG Y, YAO X, SONG Y Y, et al.Thyroid hormone and metabolic regulation[J].Chinese Bulletin of Life Sciences, 2013, 25(2):176-183.(in Chinese)
[47] BECKETT G J, MACDOUGALL D A, NICOL F, et al.Inhibition of type Ⅰ and type Ⅱ iodothyronine deiodinase activity in rat liver, kidney and brain produced by selenium deficiency[J].The Biochemical Journal, 1989, 259(3):887-892.

[48] THOMPSON K M, HAIBACH H, SUNDE R A.Growth and plasma triiodothyronine concentrations are modified by selenium deficiency and repletion in second-generation selenium-deficient rats[J].The Journal of Nutrition, 1995, 125(4):864-873.
[49] 李飞, 杨华, 侯延旭.亚硒酸钠VE对犊牛生长发育的影响[J].中国草食动物, 2000, 2(5):18-19. LI F, YANG H, HOU Y X.Effect of sodium selenite VE on growing period of the calf[J].China Herbivore Science, 2000, 2(5):18-19.(in Chinese)
[50] 韩东魁.富硒锗酵母培养物制作及其对延边黄牛生产性能的影响[D].硕士学位论文.延吉:延边大学, 2019. HAN D K.Preparation of se-enriched germanium yeast culture and its effect on the production performance of
Yanbian yellow cattle[D].Master's Thesis.Yanji:Yanbian University, 2019.(in Chinese)
[51] 李春梅, 李国梅, 贺顺忠, 等.妊娠后期母牦牛补Se和VE对犊牦牛生长发育的影响[J].青海畜牧兽医杂志, 2020, 50(1):27-30. LI C M, LI G M, HE S Z, et al.Effects of Se and VE supplementation on growth and development of calve yak in late pregnant female yak[J].Chinese Qinghai Journal of Animal and Veterinary Sciences, 2020, 50(1):27-30.(in Chinese)
[52] SALLES M S V, ZANETTI M A, JÚNIOR L C R, et al.Performance and immune response of suckling calves fed organic selenium[J].Animal Feed Science and Technology, 2014, 188:28-35.
[53] HAUG A N, VHILE S G, BERG J, et al.Feeding potentially health promoting nutrients to finishing bulls changes meat composition and allow for product health claims[J].Meat Science, 2018, 145:461-468.
[54] MALBE M, KLAASSEN E, KAARTINEN L, et al.Effects of oral selenium supplementation on mastitis markers and pathogens in Estonian cows[J].Veterinary Therapeutics:Research in Applied Veterinary Medicine, 2003, 4(2):145-154.
[55] 杨钢.内分泌生理与病理生理学[M].2版.天津:天津科学技术出版社, 2000. YANG G.Endocrine physiology & pathphysiology[M].2nd ed.Tianjin:Tianjin Science and Technology Press, 2000.(in Chinese)
[56] 王玲, 吕永艳, 程志伟, 等.复合酵母培养物对奶牛产奶性能、氮排放及血液生化指标的影响[J].草业学报, 2015, 24(12):121-130. WANG L, LYU Y Y, CHENG Z W, et al.Milk production, nitrogen excretion and blood biochemical parameter responses to dietary addition of compound yeast cultures in dairy cows[J].Acta Prataculturae Sinica, 2015, 24(12):121-130.(in Chinese)
[57] WANG C, LIU Q, YANG W Z, et al.Effects of selenium yeast on rumen fermentation, lactation performance and feed digestibilities in lactating dairy cows[J].Livestock Science, 2009, 126(1/2/3):239-244.
[58] 王治华, 杨志飞, 王连仲, 等.日粮中硒和维生素E对奶牛泌乳性能的影响[J].中国草食动物, 2005, 25(2):33-34. WANG Z H, YANG Z F, WANG L Z, et al.Effect of dietary Se and vitamin E on performance of dairy cows[J].China Herbivore Science, 2005, 25(2):33-34.(in Chinese)
[59] 郝宏晓, 刘光磊, 张佩华.日粮添加硒对围产期奶牛生产性能和氧化应激状态的影响[J].黑龙江畜牧兽医, 2017(13):40-45, 48. HAO H X, LIU G L, ZHANG P H.The effects of dietary selenium supplementation on performance and oxidative stress status of transition dairy cows[J].Heilongjiang Animal Science and Veterinary Medicine, 2017(13):40-45, 48.(in Chinese)
[60] 蒋昊.硒和维生素E对泌乳水牛乳房炎发病率、生产及繁殖性能的影响[D].硕士学位论文.南宁:广西大学, 2012. JIANG H.Effects of selenium and vitamin E on the incidence, production and reproductive performance of lactating buffalo mastitis[D].Master's Thesis.Nanning:Guangxi University, 2012.(in Chinese)
[61] RABIEE A R, LEAN I J, STEVENSON M A, et al.Effects of feeding organic trace minerals on milk production and reproductive performance in lactating dairy cows:a meta-analysis[J].Journal of Dairy Science, 2010, 93(9):4239-4251.

[62] KARKOODI K, CHAMANI M, BEHESHTI M, et al.Effect of organic zinc, manganese, copper, and selenium chelates on colostrum production and reproductive and lameness indices in adequately supplemented Holstein cows[J].Biological Trace Element Research, 2012, 146(1):42-46.

[63] RAN L W, WU X S, SHEN X Z, et al.Effects of selenium form on blood and milk selenium concentrations, milk component and milk fatty acid composition in dairy cows[J].Journal of the Science of Food and Agriculture, 2010, 90(13):2214-2219.

[64] AHSAN U, KAMRAN Z, RAZA I, et al.Role of selenium in male reproduction-a review[J].Animal Reproduction Science, 2014, 146(1/2):55-62.
[65] QAZI I H, ANGEL C, YANG H X, et al.Selenium, selenoproteins, and female reproduction:a review[J].Molecules, 2018, 23(12):3053.
[66] STUSS M, MICHALSKA-KASICZAK M, SEWERYNEK E.The role of selenium in thyroid gland pathophysiology[J].Endokrynologia Polska, 2017, 68(4):440-465.

[67] CEKO M J, O'LEARY S, HARRIS H H, et al.Trace elements in ovaries:measurement and physiology[J].Biology of Reproduction, 2016, 94(4):86.
[68] CEKO M J, HUMMITZSCH K, HATZIRODOS N, et al.X-ray fluorescence imaging and other analyses identify selenium and GPX1 as important in female reproductive function[J].Metallomics, 2015, 7(1):71-82.

[69] RAYMAN M P.Selenium and human health[J].The Lancet, 2012, 379(9822):1256-1268.

[70] KAMADA H.Effects of selenium-rich yeast supplementation on the plasma progesterone levels of postpartum dairy cows[J].Asian-Australasian Journal of Animal Sciences, 2017, 30(3):347-354.
[71] ULLAH H, KHAN R U, MOBASHAR M, et al.Effect of yeast-based selenium on blood progesterone, metabolites and milk yield in Achai dairy cows[J].Italian Journal of Animal Science, 2019, 18(1):1445-1450.

[72] LIZARRAGA R M, ANCHORDOQUY J M, GALARZA E M, et al.Sodium selenite improves
in vitro maturation of
Bos primigenius taurus oocytes[J].Biological Trace Element Research, 2020, 197(1):149-158.

[73] KHATTI A, MEHROTRA S, PATEL P K, et al.Supplementation of vitamin E, selenium and increased energy allowance mitigates the transition stress and improves postpartum reproductive performance in the crossbred cow[J].Theriogenology, 2017, 104:142-148.
[74] SPEARS J W, WEISS W P.Role of antioxidants and trace elements in health and immunity of transition dairy cows[J].The Veterinary Journal, 2008, 176(1):70-76.

[75] SORDILLO L M.Selenium-dependent regulation of oxidative stress and immunity in periparturient dairy cattle[J].Veterinary Medicine International, 2013, 2013:154045.
[76] KEHR S, MALINOUSKI M, FINNEY L, et al.X-ray fluorescence microscopy reveals the role of selenium in spermatogenesis[J].Journal of Molecular Biology, 2009, 389(5):808-818.

[77] BROWN K M, ARTHUR J R.Selenium, selenoproteins and human health:a review[J].Public Health Nutrition, 2001, 4(2B):593-599.

[78] SHETTY S, MARSICANO J R, COPELAND P R.Uptake and utilization of selenium from selenoprotein P[J].Biological Trace Element Research, 2018, 181(1):54-61.

[79] OLSON G E, WINFREY V P, NAGDAS S K, et al.Selenoprotein P is required for mouse sperm development[J].Biology of Reproduction, 2005, 73(1):201-211.

[80] ZHOU J C, ZHENG S J, MO J L, et al.Dietary selenium deficiency or excess reduces sperm quality and testicular mRNA abundance of nuclear glutathione peroxidase 4 in rats[J].The Journal of Nutrition, 2017, 147(10):1947-1953.

[81] EL-SHARAWY M, EID E, DARWISH S, et al.Effect of organic and inorganic selenium supplementation on semen quality and blood enzymes in buffalo bulls[J].Animal Science Journal, 2017, 88(7):999-1005.

[82] KHALIL W A, EL-HARAIRY M A, ZEIDAN A E B, et al.Impact of selenium nano-particles in semen extender on bull sperm quality after cryopreservation[J].Theriogenology, 2019, 126:121-127.
[83] 杨文瑾.亚硒酸钠维生素E对牛冷冻精液品质的影响[J].中国奶牛, 2012(2):21-25. YANG W J.Effect of sodium selenite-vitamin E mixture on the quality of bovine frozen semen[J].China Dairy Cattle, 2012(2):21-25.(in Chinese)
[84] 陈浩, 王纯洁, 斯木吉德, 等.牛肉品质及其影响因素研究进展[J].动物营养学报, 2021, 33(2):669-678. CHEN H, WANG C J, SI M J D, et al.Research progress on beef quality and its influencing factors[J].Chinese Journal of Animal Nutrition, 2021, 33(2):669-678.(in Chinese)
[85] JO C, AHN D U.Fluorometric analysis of 2-thiobarbituric acid reactive substances in turkey[J].Poultry Science, 1998, 77(3):475-480.

[86] SUN Q, SENECAL A, CHINACHOTI P, et al.Effect of water activity on lipid oxidation and protein solubility in freeze-dried beef during storage[J].Journal of Food Science, 2002, 67:2512-2516.
[87] ROSSI C A, COMPIANI R, BALDI G, et al.The effect of different selenium sources during the finishing phase on beef quality[J].Journal of Animal and Feed Sciences, 2015, 24(2):93-99.

[88] COZZI G, PREVEDELLO P, STEFANI A L, et al.Effect of dietary supplementation with different sources of selenium on growth response, selenium blood levels and meat quality of intensively finished Charolais young bulls[J].Animal, 2011, 5(10):1531-1538.

[89] 徐娥, 夏先林, 张运国.添加有机硒对育肥牛肉质和血液生理生化指标的影响[J].黑龙江畜牧兽医, 2011(7):65-66. XU E, XIA X L, ZHANG Y G.Effects of organic selenium on quality and blood physiological and biochemical indexes of fattened beef[J].Heilongjiang Animal Science and Veterinary Medicine, 2011(7):65-66.(in Chinese)
[90] SUNDE R A, BOWMAN B, RUSSELL R.Selenium in present knowledge in nutrition[J].International Life Sciences, 2006, 9:480-497.
[91] KHALILI M, CHAMANI M, AMANLOU H, et al.The effect of feeding inorganic and organic selenium sources on the hematological blood parameters, reproduction and health of dairy cows in the transition period[J].Acta Scientiarum Animal Sciences, 2020, 42(1):e45371.
[92] BECK P A, WISTUBA T J, DAVIS M E, et al.Effects of feeding supplemental organic or inorganic selenium to cow-calf pairs on selenium status and immune responses of weaned beef calves[J].The Professional Animal Scientist, 2005, 21(2):114-120.

[93] 孙玲玲.蛋氨酸硒羟基类似物或酵母硒对泌乳奶牛血清及乳中硒浓度、生产性能及抗氧化能力的影响[D].硕士学位论文.北京:中国农业科学院, 2018. SUN L L.The effect of methionine selenium hydroxy analogue or yeast selenium on the selenium concentration, production performance and antioxidant capacity of lactating dairy cows[D].Master's Thesis.Beijing:The Chinese Academy of Agricultural Sciences, 2018.(in Chinese)
[94] NIWIŃSKA B, ANDRZEJEWSKI M.Effects of selenium supplement forms on the diet-cow-calf transfer of selenium in Simmental cattle[J].Czech Journal of Animal Science, 2017, 62(5):201-210.

[95] MEHDI Y, DUFRASNE I.Selenium in cattle:a review[J].Molecules, 2016, 21(4):545.
[96] VIERO V, FISCHER V, MACHADO S C, et al.Efeito da suplementação com diferentes níveis de selênio orgȃnico e inorgȃnico na produção e na composição do leite e no sangue de vacas em lactação[J].Arquivo Brasilro de Medicina Veterinária e Zootecnia, 2010, 62(2):382-390.

[97] JUNIPER D T, PHIPPS R H, GIVENS D I, et al.Tolerance of ruminant animals to high dose in-feed administration of a selenium-enriched yeast[J].Journal of Animal Science, 2008, 86(1):197-204.

[98] 王尚.不同硒源与添加水平对热应激奶牛饲喂效果的研究[D].硕士学位论文.合肥:安徽农业大学, 2017. WANG S.Effects of different selenium sources and supplementation levels on the feeding of heat-stressed cows[D].Master's Thesis.Hefei:Anhui Agricultural University, 2017.(in Chinese)
[99] ORTMAN K, PEHRSON B.Effect of selenate as a feed supplement to dairy cows in comparison to selenite and selenium yeast[J].Journal of Animal Science, 1999, 77(12):3365-3370.