[Abbitt B., Ball L., Kitto G.P., Sitzman C.G., Wilgenburg B., Raim L.W., Seidel GEJr. (1978). Effect of three methods of palpation for pregnancy diagnosis per rectum on embryonic and fetal attrition in cows. J. Am. Vet. Med. Assoc., 173: 973–977.]Search in Google Scholar
[Balhara A.K., Gupta M., Singh S., Mohanty A.K., Singh I. (2013). Early pregnancy diagnosis in bovines: current status and future directions. Sci. World. J., 2013: 958540.10.1155/2013/958540]Search in Google Scholar
[Beal W.E., Perry R.C., Corah L.R. (1992). The use of ultrasound in monitoring reproductive physiology of beef cattle. J. Anim. Sci., 70: 924–929.10.2527/1992.703924x]Search in Google Scholar
[Bott R.C., Ashley R.L., Henkes L.E., Antoniazzi A.Q., Bruemmer J.E., Niswen-der G.D., Bazer F.W., Spencer T.E., Smirnova N.P., Anthony R.V., Hansen T.R. (2010). Uterine vein infusion of interferon tau (IFNT) extends luteal life span in ewes. Biol. Reprod., 82: 725–735.10.1095/biolreprod.109.079467]Search in Google Scholar
[Diskin M.G., Morris D.G. (2008). Embryonic and early foetal losses in cattle and other ruminants. Reprod. Domest. Anim., 43: 260–267.10.1111/j.1439-0531.2008.01171.x]Search in Google Scholar
[Forde N., Carter F., Spencer T.E., Bazer F.W., Sandra O., Mansouri-Attia N., Okumu L.A., Mc Gettigan P.A., Mehta J.P., Mc Bride R., O’Gaora P., Roche J.F., Lonergan P. (2011). Conceptus-induced changes in the endometrial transcriptome: how soon does the cow know she is pregnant? Biol. Reprod., 85: 144–156.10.1095/biolreprod.110.090019]Search in Google Scholar
[Fricke P.M. (2002). Scanning the future – ultrasonography as a reproductive management tool for dairy cattle. J. Dairy Sci., 85:1918–1926.10.3168/jds.S0022-0302(02)74268-9]Search in Google Scholar
[Friedrich M., Holtz W. (2010). Establishment of an ELISA for measuring bovine pregnancy-associated glycoprotein in serum or milk and its application for early pregnancy detection. Reprod. Domest. Anim., 45: 142–146.10.1111/j.1439-0531.2008.01287.x]Search in Google Scholar
[Gifford C.A., Racicot K., Clark D.S., Austin K.J., Hansen T.R., Lucy M.C., Da-vies C.J., Ott T.L. (2007). Regulation of interferon-stimulated genes in peripheral blood leukocytes in pregnant and bred, nonpregnant dairy cows. J. Dairy Sci., 90: 274–280.10.3168/jds.S0022-0302(07)72628-0]Search in Google Scholar
[Giordano J.O., Fricke P.M., Cabrera V.E. (2013). Economics of resynchronization strategies including chemical tests to identify non-pregnant cows. J. Dairy Sci., 96: 949–961.10.3168/jds.2012-5704]Search in Google Scholar
[Green J.C., Okamura C.S., Poock S.E., Lucy M.C. (2010 a). Measurement of interferon-tau (IFN-) stimulated gene expression in blood leukocytes for pregnancy diagnosis within 18–20 d after insemination in dairy cattle. Anim. Reprod. Sci., 121: 24–33.10.1016/j.anireprosci.2010.05.01020554404]Search in Google Scholar
[Green J.C., Okamura C.S., Mathew D.J., Newsom E.M., Lucy M.C. (2010 b). Hot topic: Successful fixed-time insemination within 21 d after first insemination by combining chemical pregnancy diagnosis on d 18 with a rapid resynchronization program. J. Dairy Sci., 93: 5668–5672.10.3168/jds.2010-339521094738]Search in Google Scholar
[Greiner M., Pfeiffer D., Smith R.D. (2000). Principles and practical application of the receiver-operating characteristic analysis for diagnostic tests. Prev. Vet. Med., 45: 23–41.10.1016/S0167-5877(00)00115-X]Search in Google Scholar
[Han H., Austin K.J., Rempel L.A., Hansen T.R. (2006). Low blood ISG15 mRNA and progesterone levels are predictive of non-pregnant dairy cows. J. Endocrinol., 191: 505–512.10.1677/joe.1.07015]Search in Google Scholar
[Kimura K. (2005). Mechanisms for establishment of pregnancy in mammalian species. J. Mamm. Ova. Res., 22: 101–118.10.1274/jmor.22.101]Search in Google Scholar
[Kizaki K., Shichijo-Kizaki A., Furusawa T., Takahashi T., Hosoe M., Hashi-zume K. (2013). Differential neutrophil gene expression in early bovine pregnancy. Reprod. Biol. Endocrinol., 11: 6.10.1186/1477-7827-11-6]Search in Google Scholar
[Kose M., Kaya M.S., Aydilek N., Kucukaslan I., Bayril T., Bademkiran S., Kiy-ma Z., Ozyurtlu N., Kayis S.A., Guzeloglu A., Atli M.O. (2016). Expression profile of interferon tau-stimulated genes in ovine peripheral blood leukocytes during embryonic death. Theriogenology, 85: 1161–1166.10.1016/j.theriogenology.2015.11.032]Search in Google Scholar
[Lee J.I., Kim I.H. (2007). Pregnancy loss in dairy cows: the contributing factors, the effects on reproductive performance and the economic impact. J. Vet. Sci., 8: 283–288.10.4142/jvs.2007.8.3.283]Search in Google Scholar
[Lucy M.C. (2001). Reproductive loss in high-producing dairy cattle: where will it end? J. Dairy Sci., 84: 1277–1293.10.3168/jds.S0022-0302(01)70158-0]Search in Google Scholar
[Mamo S., Mehta J.P., Forde N., Mc Gettigan P., Lonergan P. (2012). Conceptus-endometrium crosstalk during maternal recognition of pregnancy in cattle. Biol. Reprod., 87: 1–9.10.1095/biolreprod.112.099945]Search in Google Scholar
[Mauffré V., Grimard B., Eozenou C., Inghels S., Silva L., Giraud-Delville C., Capo D., Sandra O., Constant F. (2016). Interferon stimulated genes as peripheral diagnostic markers of early pregnancy in sheep: a critical assessment. Animal, 10: 1856–1863.10.1017/S175173111600077X]Search in Google Scholar
[Oliveira J.F., Henkes L.E., Ashley R.L., Purcell S.H., Smirnova N.P., Veeramach-aneni D.N., Anthony R.V., Hansen T.R. (2008). Expression of interferon (IFN)-stimulated genes in extrauterine tissues during early pregnancy in sheep is the consequence of endocrine IFN-tau release from the uterine vein. Endocrinology, 149: 1252–1259.10.1210/en.2007-0863]Search in Google Scholar
[Pugliesi G., Miagawa B.T., Paiva Y.N., França M.R., Silva L.A., Binelli M. (2014). Conceptus-induced changes in the gene expression of blood immune cells and the ultrasound-accessed luteal function in beef cattle: how early can we detect pregnancy? Biol. Reprod., 91: 95.10.1095/biolreprod.114.121525]Search in Google Scholar
[Reese S.T., Pereira M.H.C., Edwards J.L., Vasconcelos J.L.M., Pohler K.G. (2018). Pregnancy diagnosis in cattle using pregnancy associated glycoprotein concentration in circulation at day 24 of gestation. Theriogenology, 106: 178–185.10.1016/j.theriogenology.2017.10.020]Search in Google Scholar
[Ricci A., Carvalho P.D., Amundson M.C., Fourdraine R.H., Vincenti L., Fric-ke P.M. (2015). Factors associated with pregnancy-associated glycoprotein (PAG) levels in plasma and milk of Holstein cows during early pregnancy and their effect on the accuracy of pregnancy diagnosis. J. Dairy Sci., 98: 2502–2514.10.3168/jds.2014-8974]Search in Google Scholar
[Rodrigues Hoffmann A., Dorniak P., Filant J., Dunlap K.A., Bazer F.W., dela Concha-Bermejillo A., Welsh C.J., Varner P., Edwards J.F. (2013). Ovine fetal immune response to cache valley virus infection. J. Virol., 87: 5586–5592.10.1128/JVI.01821-12]Search in Google Scholar
[Selim A.M., Elhaig M.M., Gaede W. (2014). Development of multiplex real-time PCR assay for the detection of Brucella spp., Leptospira spp. and Campylobacter foetus. Vet. Ital., 50: 269–275.]Search in Google Scholar
[Sheridan M.P., Browne J.A., Mac Hugh D.E., Costello E., Gormley E. (2012). Impact of delayed processing of bovine peripheral blood on differential gene expression. Vet. Immunol. Immunopathol., 145: 199–205.10.1016/j.vetimm.2011.11.006]Search in Google Scholar
[Shirasuna K., Matsumoto H., Kobayashi E., Nitta A., Haneda S., Matsui M., Ka-washima C., Kida K., Shimizu T., Miyamoto A. (2012). Upregulation of interferon-stimulated genes and interleukin-10 in peripheral blood immune cells during early pregnancy in dairy cows. J. Reprod. Dev., 58: 84–90.10.1262/jrd.11-094K]Search in Google Scholar
[Shridhar P.B., Noll L.W., Shi X., An B., Cernicchiaro N., Renter D.G., Nagara-ja T.G., Bai J. (2016). Multiplex quantitative PCR assays for the detection and quantification of the six major non-O157 Escherichia coli serogroups in cattle feces. J. Food. Prot., 79: 66–74.10.4315/0362-028X.JFP-15-319]Search in Google Scholar
[Sinedino L.D., Lima F.S., Bisinotto R.S., Cerri R.L., Santos J.E. (2014). Effect of early or late resynchronization based on different methods of pregnancy diagnosis on reproductive performance of dairy cows. J. Dairy Sci., 97: 4932–4941.10.3168/jds.2013-7887]Search in Google Scholar
[Soltan M.A., Wilkes R.P., Elsheery M.N., Elhaig M.M., Riley M.C., Kennedy M.A. (2015). Circulation of bovine viral diarrhea virus-1 (BVDV-1) in dairy cattle and buffalo farms in Ismailia Province, Egypt. J. Infect. Dev. Ctries., 9: 1331–1337.10.3855/jidc.7259]Search in Google Scholar
[Sreenan J.M., Diskin M.G. (1987). Factors affecting pregnancy rate following embryo transfer in the cow. Theriogenology, 27: 99–113.10.1016/0093-691X(87)90073-2]Search in Google Scholar
[Toji N., Shigeno S., Kizaki K., Koshi K., Matsuda H., Hashiyada Y., Imai K., Takahashi T., Ishiguro-Oonuma T., Hashizume K. (2017). Evaluation of interferon-stimulated genes in peripheral blood granulocytes as sensitive responders to bovine early conceptus signals. Vet. J., 229: 37–44.10.1016/j.tvjl.2017.10.007]Search in Google Scholar
[Wiltbank M.C., Baez G.M., Garcia-Guerra A., Toledo M.Z., Monteiro P.L., Me-lo L.F., Ochoa J.C., Santos J.E., Sartori R. (2016). Pivotal periods for pregnancy loss during the first trimester of gestation in lactating dairy cows. Theriogenology, 86: 239–253.10.1016/j.theriogenology.2016.04.037]Search in Google Scholar
[Yoshino H., Toji N., Sasaki K., Koshi K., Yamagishi N., Takahashi T., Ishiguro-Oonuma T., Matsuda H., Yamanouchi T., Hashiyada Y., Imai K., Izaike Y., Kizaki K., Hashizume K. (2018). A predictive threshold value for the diagnosis of early pregnancy in cows using interferon-stimulated genes in granulocytes. Theriogenology, 107: 188–193.10.1016/j.theriogenology.2017.11.014]Search in Google Scholar