نتایج جستجو برای: dairy farms
تعداد نتایج: 64468 فیلتر نتایج به سال:
Decision Support Systems, here in dairy cows, ask for certain database requirements. This article shows some of the problems that occurred while working with data from four different dairy farms as well as shows methods and approaches used by the authors for further processing of that data.
14 15 In this paper the implementation of a tool was considered, based on Machine Learning (ML) techniques to improve 16 the detection of subclinical mastitis in dairy herds. The analysed population included 71 dairy farms in Asturias 17 (Northern Spain) and a total of 2,407 lactating cows. Four sources of information were available: a) a questionnaire 18 survey describing facilities, milking r...
Dairy cow mortality is an increasingly severe problem for the US dairy industry. The objective of this study was to examine a variety of herd management practices and herd characteristics to identify factors associated with increased cow mortality in US dairy herds. The National Animal Health Monitoring System's Dairy 2002 study surveyed dairy operations in 21 major dairy states. The complete d...
In this study, data on resource use and emissions for dairy farms in southwestern Sweden were collected and analysed with Life Cycle Assessment (LCA) methodology. The purpose of the study was to gain increased knowledge of the environmental impact of today´s milk production and of the variations between farms regarding resource use and emissions. Data were collected from 23 dairy farms in the H...
Foot-and-mouth disease (FMD) is a highly contagious viral disease of ruminants, which causes fever and blisters in their mouth and feet. This study, as a case- study design, was conducted to determine the factors related to FMD occurrence in the industrial dairy farms of Qazvin Province, Iran. The case unit was referred to any industrial dairy farms that had at least one cow or calf with clinic...
The aim of this study was to assess the effect of grazing (G) vs. zero-grazing (ZG), level of milk production, and quality and type of housing system [free stalls (FS) and straw yards (SY)] on the prevalence of lameness and leg injuries in dairy cows. Observations were made on 37 commercial dairy farms across Great Britain. A single visit of 5 d duration was made to each farm. During this visit...
Bovine neosporosis caused by the apicomplexan protozoan parasite N. caninum, was initially recognized in 1989 and is now reported as a leading infectious cause of reproductive failure in dairy cattle in world wide. The aim of this study was to determine the seroprevalence of N. caninum infection in industrial dairy cattle of Hamedan province (west of Iran) by ELISA method. Blo...
The research evaluated the feasibility of centralised pre-processing and pasteurisation of source-separated domestic food waste followed by transport to farms for anaerobic codigestion with dairy cattle slurry. Data from long-term experiments on the co-digestion of these two substrates was used to predict gross energy yields; net yields were then derived from full system analysis using an energ...
Summary studies of dairy cow removal indicate increasing levels of mortality over the past several decades. This poses a serious problem for the US dairy industry. The objective of this project was to evaluate associations between facilities, herd management practices, disease occurrence and death rates on US dairy operations through an analysis of the National Animal Health Monitoring System's...
BACKGROUND Fasciola hepatica is a helminth parasite of global importance in livestock, with major economic impact. However information on F. hepatica infections in Irish pasture-based dairy herds is limited. Therefore this study was conducted in order to determine the prevalence, seasonality and management factors associated with F. hepatica. A total of 319 Irish dairy herds were selected for t...
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