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Báo cáo khoa học: "Growth rate, health and welfare in a dairy herd with natural suckling until 6–8 weeks of age: a case repor"

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú y đề tài: Growth rate, health and welfare in a dairy herd with natural suckling until 6–8 weeks of age: a case report. | Acta Veterinaria Scandinavica BioMed Central Case report Open Access Growth rate health and welfare in a dairy herd with natural suckling until 6-8 weeks of age a case report Ann Margaret Grondahl 1 Ellen Margrete Skancke1 Cecilie Marie Mejdell2 and Johan Hogset Jansen3 Address department of Companion Animal Clinical Sciences Norwegian School of Veterinary Science P.O. Box 8146 Dep. N-0033 Oslo Norway 2National Veterinary Institute P.O. Box 8156 Dep. N-0033 Oslo Norway and department of Basal and Aquatic Medicine Norwegian School of Veterinary Science P.O. Box 8146 Dep. N-0033 Oslo Norway Email Ann Margaret Grondahl - ann.margaret.grondahl@veths.no Ellen Margrete Skancke - ellen.skancke@veths.no Cecilie Marie Mejdell - cecilie.mejdell@vetinst.no Johan H0gset Jansen - jhj@veths.no Corresponding author Published 23 June 2007 Received 2 October 2006 Acta Veterinaria Scandinavian 2007 49 16 doi 10.1186 1751-0147-49-16 Accepted 23 June 2007 This article is available from http www.actavetscand.com content 49 1 16 2007 Grondahl et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http creativecommons.Org licenses by 2.0 which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Over a period of two years growth rate and health were measured for dairy calves allowed to suckle their mothers up to 6-8 weeks of age. Thirty-one calves were weighted weekly and the mean daily growth rate was 1.2 0.03 kg from birth up to 13 weeks of age. Illness in calves and young stock was not observed. In the cows the mean incidences of ketosis displaced abomasum puerperal paresis mastitis teat injury and retained placenta were 0 0 8 22 1 and 1 respectively during a 6-year period. The mean daily gain of 56 growing bulls was 1.4 kg when slaughtered at 15 months of age which is higher than the mean daily gain of 0.95 kg in the population. .