Explaining mastitis incidence in Dutch dairy farming: The influence of farmers’ attitudes and behaviour
- 1 November 2009
- journal article
- Published by Elsevier BV in Preventive Veterinary Medicine
- Vol. 92 (3), 210-223
- https://doi.org/10.1016/j.prevetmed.2009.08.015
Abstract
When mastitis incidence increases, either infection pressure has increased or cows’ resistance has decreased. This usually indicates that farm management is not optimal. Numerous quantitative studies have demonstrated the effect of management practices on mastitis. In most of these studies, the identified risk factors could explain only part of the variance in mastitis incidence on farms. Several studies suggest that the unexplained variance is caused by farmers’ attitudes towards different aspects of mastitis treatment and preventive behaviour. This study aims to determine, to quantify and to specify the extent to which farmers’ attitudes, over and above farmers’ behaviour, are factors that explain the variation in mastitis incidence, measured in terms of the quantifiable effect of management factors. An extensive survey on self-reported attitudes, behaviour and mastitis incidence was conducted on 336 Dutch dairy farms. Results of multiple linear regression analyses show that farmers’ self-reported behaviour and attitudes together explain 48%, 31% and 23% of the variation within, respectively, the average farm bulk milk somatic cell count (BMSCC), the clinical mastitis incidence and the combined clinical and subclinical mastitis incidence. Both behaviour and attitudes explain part of the variance. However, most of the variance in all three dependant measures is explained solely by the attitude variables. The variation in BMSCC value is best explained by (1) farmers’ normative frame of reference about mastitis, (2) farmers’ perceptions about the control of mastitis and (3) the perceived effect of a BMSCC penalty level. The variation in clinical mastitis is best explained by farmers’ perceptions about mastitis control. The variation in the combined clinical and subclinical mastitis incidence rate is best explained by the perceived effect of a BMSCC penalty level and the frequency of contact with others. The results of this study show that farmers’ attitudes are a better measure than farmers’ self-reported behaviour to explain and predict differences in mastitis incidence between farms. Consequently, future research and animal health promotion programs should take into account not only farmers’ behaviour, but also farmers’ attitudes. This study provides a first empirical investigation into the social processes applicable to mastitis incidence and is therefore considered a good starting point for future research to further investigate the causal effect of attitude change on farmers’ behaviour and animal health.This publication has 26 references indexed in Scilit:
- Cow, Farm, and Management Factors During the Dry Period that Determine the Rate of Clinical Mastitis After CalvingJournal of Dairy Science, 2007
- Risk factors associated with the incidence of veterinary-treated clinical mastitis in Swedish dairy herds with a high milk yield and a low prevalence of subclinical mastitisPreventive Veterinary Medicine, 2006
- Farmers' Attitudes, Objectives, Behaviors, and Personality Traits: The Edinburgh Study of Decision Making on FarmsJournal of Vocational Behavior, 1999
- An overview of techniques for dealing with large numbers of independent variables in epidemiologic studiesPreventive Veterinary Medicine, 1997
- Relationships between culling criteria in dairy herds and farmers' management stylesPreventive Veterinary Medicine, 1996
- The theory of planned behaviorOrganizational Behavior and Human Decision Processes, 1991
- Attitudes, management practices, and herd performance — a study of Ontario dairy farm managers. II. AssociationsPreventive Veterinary Medicine, 1985
- Disease, production and culling in Holstein-Friesian cows VI. Effects of management on disease ratesPreventive Veterinary Medicine, 1984
- The psychological interaction between the stockman and his animals and its influence on performance of pigs and dairy cowsPublished by Wiley ,1984
- The Application of Electronic Computers to Factor AnalysisEducational and Psychological Measurement, 1960