The Relationships of Blood Protein Polymorphism with Reproduction in Qinchuan Yellow Cattle

Haemoglobin(Hb),transferring(Tf),post transferring(P_(Tf)),albumin(Alb),post albumin(Pa) polymorphism in the blood of 148 individuals in Qinchuan Yellow Cattle were investigated by polyacrylamide gel electrophoresis in this study.Data on their genotype and gene frequencies of the five polymorphic loci were tabulated.Relationships between genetic markers and reproductive performance were analyzed by least square.The results revealed that AFS and AFC of Hb AA were remarkable earlier than Hb AB's(P0.01).AFS and AFC of Tf AA were remarkable earlier than Tf DD's(P0.05).AFS of P_(Tf) SS was remarkable earlier than P_(Tf) FS's and P_(Tf) FF'S(P0.05).AFS of Alb AA was remarkable earlier than Alb AC's(P0.05).CI of Pa AA was remarkable shorter than PaBB's.The gene replacement average effect of Tf A substitute TfD was AFS 1.68 days and AFC 19.89 days.The gene replacement average effect of Alb A substitute Alb B was AFS 8.06 days.