Yeast of Saccharomyces cerevisiae（SCY） origin has over long time been incorporated into domestic animal diets. In calves, several products have offered improved performance and health. Although several types of rese...Yeast of Saccharomyces cerevisiae（SCY） origin has over long time been incorporated into domestic animal diets. In calves, several products have offered improved performance and health. Although several types of research have been completed, the mode of action of SCY is not clear in calves. Under this review, we have highlighted the works available in the literature on the use of SCY in calves performance, health, immunity, and the gut environment. Both active live yeast and yeast culture have positive effects on growth, rumen, small intestines, immunity and general health of the calf. Specifically, SCY can improve DMI, growth, feed efficiency and reduce diarrhea in calves. Furthermore, subtle improvements are seen in rumen fermentation（increased butyrate production） and rumen papillae growth. These positive results are, however, more pronounced in calves that are under stress or exposed to significant levels of disease-causing agents. There is a need for further research in areas such as gut morphology, gut microbiology and immunity using latest molecular methods to fully understand how SCY helps the growth and development of calves.展开更多
A number of ethnic minorities are being distributed in southwest China.Yunnan Province is an area inhabited by multi-ethnic groups.For a long time,the ethnic groups have been interacted by others in the cultural aspec...A number of ethnic minorities are being distributed in southwest China.Yunnan Province is an area inhabited by multi-ethnic groups.For a long time,the ethnic groups have been interacted by others in the cultural aspect,while retaining their own ethnic traditions.The performances of ethnic groups’dwelling houses are similar as determined by natural and cultural elements of the same area.This paper mainly analyzes decisive factors behind similar appearances by the way of field research on two minorities,Nu ethnic group and Li-su ethnic group,in the Fugong county,Nujiang Li-su autonomous prefecture.Moreover,the paper tries to summarize the commonality and individuality of the minorities in order to provide useful theoretical reference for the minorities building of new socialist countryside in the future.展开更多
基金supported by Beijing Agricultural Committee(20160146)Tianjin Commission of Science and Technology(15YFXQNC00020)+1 种基金National Dairy Industry and Technology System(CARS-37)Key Technologies R&D Program of China(2012BAD12B06)
文摘Yeast of Saccharomyces cerevisiae（SCY） origin has over long time been incorporated into domestic animal diets. In calves, several products have offered improved performance and health. Although several types of research have been completed, the mode of action of SCY is not clear in calves. Under this review, we have highlighted the works available in the literature on the use of SCY in calves performance, health, immunity, and the gut environment. Both active live yeast and yeast culture have positive effects on growth, rumen, small intestines, immunity and general health of the calf. Specifically, SCY can improve DMI, growth, feed efficiency and reduce diarrhea in calves. Furthermore, subtle improvements are seen in rumen fermentation（increased butyrate production） and rumen papillae growth. These positive results are, however, more pronounced in calves that are under stress or exposed to significant levels of disease-causing agents. There is a need for further research in areas such as gut morphology, gut microbiology and immunity using latest molecular methods to fully understand how SCY helps the growth and development of calves.
基金supported by the National Natural Science Foundation for Innovative Research Groups of China(Grant No.50921005).
文摘A number of ethnic minorities are being distributed in southwest China.Yunnan Province is an area inhabited by multi-ethnic groups.For a long time,the ethnic groups have been interacted by others in the cultural aspect,while retaining their own ethnic traditions.The performances of ethnic groups’dwelling houses are similar as determined by natural and cultural elements of the same area.This paper mainly analyzes decisive factors behind similar appearances by the way of field research on two minorities,Nu ethnic group and Li-su ethnic group,in the Fugong county,Nujiang Li-su autonomous prefecture.Moreover,the paper tries to summarize the commonality and individuality of the minorities in order to provide useful theoretical reference for the minorities building of new socialist countryside in the future.
