The reproductive performance of pigs is one of the main determinants of the profit farmers make from pig production. This study was undertaken to describe whether periods of high environmental temperature have an effect on the farrowing rate, litter sizes and number of stillbirths in commercial breeding units in South Africa. Data were collected weekly from four commercial breeding units with g...

it is fair to say that the man by including agricultural, industrial activities and exploitation-of natural resources in his survival agenda is the most responsible of all for environmental changes. fundamentall development in various parts of a watershed is unavoidable and sometimes necessary. in recent years, large number of environmentally improper developments including new town development...

in order to determine optimum landuses (in accordance with natural capability) and improve the current land management, landuse planning process was applied by using gis. within the framework of system analysis approach basic ecological and socio-economic , data were mapped. the mapped data were digitized and imported to idrisi and arc/info to build a database ,along with other descriptive data...

the main objective of this study was to investigate the environmental impacts of cotton production in golestan province of iran using life cycle assessment methodology. the data used in the study were obtained from cotton farmers with face-to-face questionnaire method during 2011-2012. the questionnaires included total inputs of cotton production in the region and yield weight. environmental im...