include the type of crossbreeding system, the selection applied within the lines, the importance of starting up relatively quickly, of maintaining efficient production within the breeding herds and of structuring the scheme so that improvements are passed down quickly to the commercial slaughter pigs.do...
Changes in patterns of association between men and women can be traced, in the first instance, to altered management practices necessitated by intensified pig production. That intensification, in turn, reflects the growing importance of money in the local economy, a shift which, through its ...
Fatness in pigs is of prime economic importance due to market incentives for production of lean pork and elevated fatness increasing the feed costs. Leptin... C.-C.Chen,T.Chang,H.-Y.Su - 《Animal Biotechnology》 被引量: 105发表: 2004年 Genetic identification of members of the Bemisia taba...
When attempting to assess welfare and economic attributes of systems, there are certain caveats that require discussion, in particular weighting of the contribution of different design attributes to pig welfare, the relative importance of the sow and her piglets and the many potential confounding ...
Economic efficiency of pig breeding schemes: A breeding company view This review examines some aspects of pig breeding schemes which affect their economic efficiency. These include the type of crossbreeding system, the selection applied within the lines, the importance of starting up relatively quickly...
Panel data Number of pigs, cows, and sheep, agricultural management data 2010–2020 County level Qionglai Statistics Bureau Urban and rural population, GDP Township level Comprehensive energy consumption of industrial enterprises above designated size in terms of GDP per 10,000 yuan of total industria...
Culture of sturgeon species is of great economical and ecological importance for those countries whose natural stocks of Acipenseridae spp. have declined o... G. Kksal,F Rad,M Kindir - 《Turkish Journal of Veterinary & Animal Sciences》 被引量: 33发表: 2000年 Effects of Two Seaweeds (Ulva...
aThe Millennium Bridge example points to the importance of the dual role of prices. Not only are 千年桥梁例子点到价格的双重角色的重要性。 不仅是[translate] aeconomic agents. 正在翻译,请等待...[translate]
1978. Isoflavone precursors of the pterocarpan phytoalexin maackiain inTrifolium pratense. Phytochemistry 17: 1751–1754. Article CAS Google Scholar Duke, J. A. 1980. Handbook of Legumes of World Economic Importance. Plenum, New York. Duncan, W. H., P. I. Piercy, and R. J. Starling. ...
food types such as beef and poultry rise, while prices for maize and soybean used in feed decline. There is a slight decline in average per capita calorie availability in China, indicating the importance of assuring the dietary needs of low-income populations. Outside China, projections for cal...