PubMed · 7846868
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
H Bjørn. 1994. Workshop summary: anthelmintic resistance.. https://doi.org/10.1016/0304-4017(94)90106-6
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
Periodic (4-monthly) surveillance of pig herds for antibodies against swine vesicular disease (SVD) is obligatory in the Netherlands since 1993. Samples should be collected "at random' in as many compartments as possible, with a maximum of one pig per pen. This prerequisite for a sensitive surveillance will be elucidated using four examples of SVD outbreaks in the Netherlands.
The use of growth promotors, such as steroid hormones, beta-agonists and somatotropins, may result in animal health and welfare risks and raise ethical questions. From this point of view some fundamental statements are discussed. Growth promotors do not contribute to an efficient production of essential nutritional needs for man. There is a need for a consistent policy aiming at sustainable agriculture and world food supply. Animal husbandry cannot be regarded as a simple technical-economical enterprise because of the intrinsic biological values involved. If growth promotors are almost exclusively judged on safety criteria than questions of principle are avoided. The choice to use growth promotors cannot be left to self-regulation based on self-interest and/or be made subject to international trade agreements governed by economic considerations only. In the production of food the price for the protection of the environment and the animals ought to be paid. It is time to make future oriented choices.
OBJECTIVE: To use an on-farm recording form to quantity the effect of specific management practices on apparent prevalence of Mycobacterium paratuberculosis in dairy cattle herds. DESIGN: Epidemiologic survey. ANIMALS: 26 commercial Wisconsin dairy farms. PROCEDURES: An instrument was developed on the basis of literature review and expert interviews to quantify on-farm management practices associated with increased apparent prevalence of M paratuberculosis. On-farm visits were conducted to assess how specific management practices were conducted. Apparent prevalence of M paratuberculosis infection was measured for all animals > 20 months old on all farms, using a commercial ELISA. Regression analysis was used to identify management variables that were significantly associated with apparent prevalence of M paratuberculosis. RESULTS: Regression analysis (R2 = 0.90) identified that high scores for environmental conditions, newborn calf care, grower calf care, bred heifer care, and manure handling were significantly associated with M paratuberculosis apparent prevalence in Wisconsin dairy herds. CLINICAL IMPLICATIONS: Environmental conditions, newborn calf care, grower calf management, bred heifer management, and manure handling factors may serve as a prioritized checklist for instructing owners and managers where to place emphasis in changing management practices to limit M paratuberculosis prevalence. Likewise, the factors identified as having low association with apparent prevalence may be de-emphasized in control programs, allowing dairy managers to focus time and finances on more effective components of an M paratuberculosis control program.