6Juan E. Romano,Jamie E. Larson.Accuracy of pregnancy specific protein-B test for early pregnancy diagnosis in dairy cattle[J].Theriogenology.2010(6)
7E. Silva,R.A. Sterry,D. Kolb,N. Mathialagan,M.F. McGrath,J.M. Ballam,P.M. Fricke.Accuracy of a Pregnancy-Associated Glycoprotein ELISA to Determine Pregnancy Status of Lactating Dairy Cows Twenty-Seven Days After Timed Artificial Insemination[J].Journal of Dairy Science.2007(10)
8AAyad,NMSousa,JSulon,MIguer‐Ouada,JFBeckers.Comparison of Five Radioimmunoassay Systems for PAG Measurement: Ability to Detect Early Pregnancy in Cows[J].Reproduction in Domestic Animals.2007(4)
9Juan E. Romano,James A. Thompson,Duane C. Kraemer,Mark E. Westhusin,David W. Forrest,Michael A. Tomaszweski.Early pregnancy diagnosis by palpation per rectum: Influence on embryo/fetal viability in dairy cattle[J].Theriogenology.2006(3)
10Jeffrey S. Stevenson,Joshua A. Cartmill,Betty A. Hensley,Samir Z. El-Zarkouny.Conception rates of dairy cows following early not-pregnant diagnosis by ultrasonography and subsequent treatments with shortened Ovsynch protocol[J].Theriogenology.2003(3)
