Livestock disease controls are often linked to movements between farms, for example, via quarantine and pre- or post-movement testing. Designing effective controls, therefore, benefits from accurate assessment of herd-to-herd transmission. Household models of human infections make use of R*, the number of groups infected by an initial infected group, which is a metapopulation level analogue of ...

evaluating the implemented sprinkler irrigation systems, made it possible to determine these systems level of success; and presented practical solutions to improve the efficiency of these systems and offered suggestions for future systems. the main objective of this study was to evaluate the status and performance of the implemented center pivot systems in the study area. in this study, 5 cente...

Introduction This chapter addresses the question “Can smallholder livestock production systems in developing countries be transformed to take advantage of the increasing demand for meat?”, a question that has been posed by many authors (for example, Tarawali et al. 2011). On the basis of a case study that followed smallholder cattle development in Ea Kar, a district in the central highlands of ...