Risk factors for calf mortality in large Swedish dairy herds
نویسندگان
چکیده
منابع مشابه
Calf mortality in Norwegian dairy herds.
The aims of this study were to estimate mortality rates in Norwegian dairy calves and young stock up to 1 yr of age, identify risk factors for calf mortality, and evaluate the etiology of calf mortality based on postmortem analyses. The material comprised 3 data sets. The first data set included information on 289,038 offspring in 14,474 dairy herds registered in the Norwegian Dairy Herd Record...
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An increase in on-farm mortality (euthanasia and death) in dairy herds has been reported in several countries in the last decade. This does not only imply possible problems with animal welfare, but it also causes economic losses to the farmer. The objective of this study was to evaluate time trends in on-farm dairy cow mortality in Sweden and identify potential herd-level risk factors. Data wer...
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A high rate of on-farm cow mortality (i.e. unassisted death and euthanasia) is both a financial concern and an important animal welfare issue. The overall aim of this thesis was to evaluate the development of mortality in Swedish dairy herds and to identify characteristics associated with on-farm mortality at cow and herd levels. In paper I, two analyses were performed using data from the cattl...
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The association between some risk factors and the presentation of post-partum uterine infections in dairy cattle has been established. However, this association is not comprehensive and the role of other factors has not been widely studied. Here the importance of age, parity, calving season, dystocia and retained foetal membranes (RFMs) was established as some of the potential risk factors for ...
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Delayed conception is defined as an interval of greater than 90 days postpartum before a cow becomes pregnant again. In this study, the risk factors for delayed conception in Korean dairy herds were determined by evaluating several reproductive factors in individual cows. The following data was recorded from 1,012 pregnancies in eight dairy herds (designated A-H) from July 2001 to June 2006: he...
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ژورنال
عنوان ژورنال: Preventive Veterinary Medicine
سال: 2011
ISSN: 0167-5877
DOI: 10.1016/j.prevetmed.2010.12.001