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Infection through the farm gate

studies on movements of livestock and on-farm biosecurity

Nöremark, Maria (2010). Infection through the farm gate. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2010:11
ISBN 978-91-576-7488-3
[Doctoral thesis]

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This thesis is based on studies of movements of livestock, on-farm biosecurity and disease awareness among farmers in Sweden; factors which can affect the spread of contagious livestock diseases. The structure of the cattle and pig movements were analysed using data obtained from the Swedish Board of Agriculture. Most movements were within 100 km, however, there were also long distance movements up to 1200 km for cattle and 1000 km for pigs. This supports an initial total standstill in case of an outbreak of foot-and-mouth disease. Network analysis was used to investigate the contact patterns. Many of the farms did not sell or buy animals or had only limited trade, whereas some farms had many contacts. The measure 'ingoing infection chain' was constructed to capture indirect movements, some farms with few direct contacts had many indirect contacts and this measure can potentially be very useful for disease control and risk based surveillance. On-farm biosecurity was investigated through a posted questionnaire study to 1498 farmers and response was retrieved from 34% of them. Among farmers declining participation, the major reason was not having livestock. There was large variation in biosecurity routines among farmers. In general farmers with pigs had higher biosecurity compared to farmers with cattle, sheep/goats or mixed species or hobby farmers. Many farmers and visitors did not have sufficient routines to prevent spread of disease and some reported inconsistent routines, indicating a lack of knowledge of how to prevent spread of disease. A need for improvement of onfarm biosecurity was identified. Disease awareness and information retrieval among pig farmers in relation to an outbreak of PRRS in 2007 was investigated using posted questionnaires to 153 farmers. Farmers with large herds were in general aware of the outbreak and how to protect their farm. However, hobby farmers were identified as a group difficult to reach with information in case of an outbreak. Active search for information was associated with distance from the outbreak. The Swedish Animal Health Service, followed by the veterinary authorities, were considered the most important and reliable source of information.

Authors/Creators:Nöremark, Maria
Title:Infection through the farm gate
Subtitle:studies on movements of livestock and on-farm biosecurity
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2010
Number of Pages:68
ALLI. Maria Nöremark, Nina Håkansson, Tom Lindström, Uno Wennergren, Susanna Sternberg Lewerin (2009). Spatial and temporal investigations of reported movements, births and deaths of cattle and pigs in Sweden. Acta Veterinaria Scandinavica Oct 7;51:37. http://www.actavetscand.com/content/51/1/37 II. Maria Nöremark, Nina Håkansson, Susanna Sternberg Lewerin, Ann Lindberg, Annie Johnsson. Network Analysis of cattle and pig movements in Sweden; measures relevant for risk based surveillance. (Submitted manuscript). III. Maria Nöremark, Jenny Frössling, Susanna Sternberg Lewerin. Application of routines that contribute to on-farm biosecurity as reported by Swedish livestock farmers. (Submitted manuscript). IV. Maria Nöremark, Ann Lindberg, Ivar Vågsholm, Susanna Sternberg Lewerin (2009). Disease awareness, information retrieval and change in biosecurity routines among pig farmers in association with the first PRRS outbreak in Sweden. Preventive Veterinary Medicine, Volume 90, Issues 1-2, 1 July 2009, Pages 1-9.
Place of Publication:Uppsala
ISBN for printed version:978-91-576-7488-3
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:cattle, swine, sheep, live animal transport, disease transmission, disease control, farmers, human behaviour, sweden
Keywords:livestock movement, network analysis, biosecurity, disease control, farmers, human behaviour, sweden awareness, ingoing infection chain, cattle, pig, sheep
Permanent URL:
ID Code:2227
Department:(VH) > Dept. of Clinical Sciences
Deposited By: Maria Nöremark
Deposited On:11 Feb 2010 00:00
Metadata Last Modified:02 Dec 2014 10:17

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