tailieunhanh - Báo cáo khoa học: "Endocrine Profiles, Haematology and Pregnancy Outcomes of Late Pregnant Holstein Dairy Heifers Sired by Bulls Giving a High or Low Incidence of Stillbirth"

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 Profiles, Haematology and Pregnancy Outcomes of Late Pregnant Holstein Dairy Heifers Sired by Bulls Giving a High or Low Incidence of Stillbirth. | Acta vet. scand. 2004 45 47-68. Endocrine Profiles Haematology and Pregnancy Outcomes of Late Pregnant Holstein Dairy Heifers Sired by Bulls Giving a High or Low Incidence of Stillbirth By B. Kornmatitsuk1 E. Dahl3 E. Ropstad3 J. F Beckers4 H. Gustafsson2 and H. Kindahl1 Department of Obstetrics and Gynaecology Centre for Reproductive Biology in Uppsala CRU Swedish University of Agricultural Sciences Uppsala 2Swedish Dairy Association Eskilstuna Sweden 3Department of Reproduction and Forensic Medicine Norwegian College of Veterinary Medicine Oslo Norway and 4Department of Physiology of Reproduction Faculty of Veterinary Medicine University of Liège Sart-Tilman Belgium. Kornmatitsuk B Dahl E Ropstad E Beckers Gustafsson H Kindahl H Endocrine profiles haematology and pregnancy outcomes of late pregnant Holstein dairy heifers sired by bulls giving a high or low incidence of stillbirth. Acta vet. scand. 2004 45 47-68. - The high incidence of stillbirth in Swedish Holstein heifers has increased continuously during the last 15 years to an average of 11 today. The pathological reasons behind the increased incidence of stillbirth are unknown. The present experiment was undertaken to investigate possible causes of stillbirth and to study possible physiological markers for predicting stillbirth. Twenty Swedish Holstein dairy heifers sired by bulls with breeding values for a high risk of stillbirth n 12 experimental group and a low risk of stillbirth n 8 control group group B were selected based on information in the Swedish AI-data base. The experimental group consisted of 2 subgroups of heifers groups A1 and A2 inseminated with 2 different bulls with and 9 higher stillbirth rates than the average and the control group consisted of heifers pregnant with 5 different bulls with 0 -6 lower stillbirth rates than the average. The bull used for group A1 had also calving difficulties due to large calves as compared to the bull in group A2 showing no calving difficulties. .

TÀI LIỆU LIÊN QUAN
TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.