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Tuyển tập các báo cáo nghiên cứu về bệnh thú y được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành thú y đề tài: Endocrine Measurements and Calving Performance of Swedish Red and White and Swedish Holstein Dairy Cattle with Special Respect to Stillbirth. | Acta vet. scand. 2003 44 21-33. Endocrine Measurements and Calving Performance of Swedish Red and White and Swedish Holstein Dairy Cattle with Special Respect to Stillbirth By B. Kornmatitsuk1 G. Franzen1 H. Gustafsson1 and H. Kindahĩ1 Department of Obstetrics and Gynaecology Centre for Reproductive Biology in Uppsala 2Department of Animal Breeding and Genetics Swedish University of Agricultural Sciences Uppsala and 3Swedish Dairy Association Eskilstuna Sweden. Kornmatitsuk B Franzen G Gustafsson H Kindahl H Endocrine measurements and calving performance of swedish red and white and swedish holstein dairy cattle with special respect to stillbirth. Acta vet. scand. 2003 44 21-33. - During 3 consecutive calving seasons calving performance placental characteristics and endocrine profiles of total 98 pregnancies of late pregnant Swedish Red and White SRB and Swedish Holstein SLB dairy heifers and cows were investigated. Ninety-four singleton pregnancies and 4 sets of twins were recorded. In animals with singleton pregnancy 8 stillbirths 7 weak calves 3 premature parturitions and 1 abortion were registered. In the SLB heifers 19 of stillbirth 5 26 were observed while 5 2 42 were noted for the SRB heifers. One stillborn calf derived from the SRB cows and none was found from the SLB cows. In the heifers and cows delivering a normal living calf with unassisted parturition the placentome thickness monitored by ultrasonography was constant towards the end of pregnancy. The numbers of foetal cotyledons varied individually between animals but in total fewer cotyledons were found in the foetal membranes of the SRB animals than in the SLB animals 69 19 vs. 88 29 p 0.05 . No morphological and numerical differences of the placentome thickness in animals delivering a stillborn or weak calf compared to animals delivering a normal living calf could be observed. In animals with unassisted parturition and without birth complications the levels of progesterone P4 PGF2a metabolite .
