s 42, 93-103. Wollny, C. B. A. 2003. The need to conserve farm animal genetic resources in Africa: should policy makers be concerned? Ecological Economics 45, 341-351. Zeven, A. C. (1998) Landraces: A review of definitions and classifications. Euphytica 104, 127-139.

the house fly, musca domestica l., is known as one of the most important hygiene problems worldwide. it has shown a high potential to develop resistance to chemical insecticides. this study was undertaken to determine the susceptibility or resistance of the house fly, which were collected from 3 livestock farms near the city of ahvaz, to prevalent pyrethroid insecticides (delthamethrin, lambda-...

Mixed crop-livestock systems, combining livestock and cash crops at farm level, are considered to be suitable for sustainable intensification of agriculture. Ensuring the survival of mixed crop-livestock systems is a challenge for European agriculture: the number of European mixed crop-livestock farms has been decreasing since 1970. Analysis of farming system dynamics may elucidate past changes...

Several studies have investigated the effect of livestock farm emissions on the respiratory health of local residents, but results are inconsistent. This study aims to explore associations between the presence of livestock farms and respiratory health in an area of high-density livestock farming in the Netherlands. We focused especially on associations between farm exposures and respiratory sym...

BACKGROUND We consider the potential for infection to spread in a farm population from the primary outbreak farm via livestock movements prior to disease detection. We analyse how this depends on the time of the year infection occurs, the species transmitting, the length of infectious period on the primary outbreak farm, location of the primary outbreak, and whether a livestock market becomes i...

The interest of consumers in farming activities is evident and agricultural producers have responded to this increasing interest in a number of ways, including inviting visitors to farm operations through tourism or farm visits. Livestock industries, in particular, are interacting with the public in numerous ways, including via marketing channels for their products, interacting with community l...

The expanding demand for livestock products in developing countries is expected to drive changes in livestock farming systems, such as intensification and technological development. However, while large commercial farms can take advantage of these new opportunities, semi-subsistence agriculture will be the main option for many poor livestock keepers. Development pathways may depend on local and...

nt matter & 2007 IAgrE. temseng.2007.03.012 thor. [email protected] (S.X. In livestock farming, odour measurement and reduction are necessary for a cleaner environment, lower health risks to humans, and higher quality of livestock production. There have been many studies on modelling of livestock farm odour by analysing the chemical components in odorous air. It is suggested that the component ...

Monitoring and analysis of livestock farm environments require collection and management of large amount of data from distributed farms. There is an increasing demand for collaboration among livestock producers, environment agencies and governments. This paper presents a collaborative system for monitoring and analyzing livestock farm odours remotely, and for enhancing the collaboration among u...

Inflation-adjusted farm prices and farm-wholesale marketing margins for beef and pork have declined over several decades. For example, from 1970 to 1998, real slaughter steer and hog prices declined by 50% and 66%, respectively, while real beef and pork farm-wholesale (FW) marketing margins declined by 57% and 65%, respectively (Figures 1 and 2). These changes have been attributed to declining ...