Zobrazeno 1 - 10
of 265
pro vyhledávání: '"A.A. Dijkhuizen"'
Publikováno v:
Livestock Production Science 75 (2002)
Livestock Production Science, 75, 157-166
Livestock Production Science, 75, 157-166
The aim of the current study was to obtain expert data on the effects on productivity (EPs) associated with bovine respiratory disease (BRD) in dairy heifers. Expert knowledge on the EPs of BRD was elicited because a complete insight into these effec
Publikováno v:
Veterinary Quarterly. 23:71-76
Summary In May 1998, a compulsory eradication programme for BHV1 started in the Netherlands. In December 1999 approximately 24% of Dutch dairy farms were certified BHV1‐free (Animal Health Service (AHS)). Ninety‐three certified BHV1‐free dairy
Publikováno v:
Netherlands Journal of Agricultural Science, 49, 343-356
Netherlands Journal of Agricultural Science 49 (2001)
Netherlands Journal of Agricultural Science 49 (2001)
The risk environment of farmers is changing. For example, price and production risks are increasing and governments increasingly encourage agriculture to find private market solutions for catastrophic risks like floods and epidemic diseases. We studi
Publikováno v:
Preventive Veterinary Medicine, 51, 289-305
Preventive Veterinary Medicine 51 (2001)
Preventive Veterinary Medicine 51 (2001)
A more-closed farming system can be a good starting point for eradication of infectious diseases from within a herd. The economic implications of a more-closed farming system will not always be obvious to farmers. The management decisions are related
Publikováno v:
Netherlands Journal of Agricultural Science, 48, 151-164
Netherlands Journal of Agricultural Science 48 (2000)
Scopus-Elsevier
Netherlands Journal of Agricultural Science 48 (2000)
Scopus-Elsevier
Dairy farming contributes substantially to Dutch environmental problems. A dynamic heifer rearing model was used to determine the extent to which the rearing activity influences nutrient flows on a dairy farm. Based on current rearing conditions, the
Publikováno v:
Journal of Agricultural Engineering Research 76 (2000) 1
Journal of Agricultural Engineering Research, 76(1), 37-49
Journal of Agricultural Engineering Research, 76(1), 37-49
The aim of this paper is to explore the stochastic nature of the usage of facilities in a robotic milking barn, independent of the barn layout. It presents experimental data obtained by monitoring 10 dairy cows over a period of 18 days. To minimize r
Publikováno v:
Journal of Dairy Science, 83(9), 1989-1997
Journal of Dairy Science 83 (2000) 9
Journal of Dairy Science 83 (2000) 9
We used a dynamic programming model to determine optimum rearing decisions of dairy replacements. Heifers were described in the model by age, season, body weight, pregnancy state, and prepubertal growth rate. Prices and parameters were chosen to repr
Publikováno v:
Preventive Veterinary Medicine. 42:297-317
Using the spatial, temporal and stochastic simulation model InterCSF, several alternative pre-emptive slaughter strategies that could have been applied in the Dutch Classical Swine Fever (CSF) epidemic of 1997–1998 were evaluated. Furthermore, effe
Publikováno v:
Preventive Veterinary Medicine. 42:271-295
The simulation model InterCSF was developed to simulate the Dutch Classical Swine Fever (CSF) epidemic of 1997-98 as closely as possible. InterCSF is a spatial, temporal and stochastic simulation model. The outcomes of the various replications give a
Publikováno v:
Livestock Production Science, 60, 371-382
Livestock Production Science 60 (1999)
Livestock Production Science 60 (1999)
The prevalence of Bovine herpes virus type 1 (BHV1) at dairy farms is dependent on several factors. First, the prevalence is influenced by introduction of BHV1 at the farms, which is dependent on the risk factors for introduction. Second, the BHV1 pr