首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Researchers say extra vitamin E fed to turkeys appears to help control infections from listeria(李氏杆菌). People who eat foods that
Researchers say extra vitamin E fed to turkeys appears to help control infections from listeria(李氏杆菌). People who eat foods that
admin
2015-01-31
89
问题
Researchers say extra vitamin E fed to turkeys appears to help control infections from listeria(李氏杆菌). People who eat foods that contain this bacteria can get listeriosis(李氏杆菌病).
This disease is especially dangerous to pregnant women, newborn babies and people with weakened defenses. The United States has more than two thousand cases of listeriosis each year and five hundred people die of it. Some cases have been linked to poultry(家禽)products that have not been cooked enough. The researchers found that vitamin E improved the ability of turkeys to fight the growth of listeria. The findings could help other meat industries as well.
Irene Wesley led the study for the United States Department of Agriculture. Researchers from Iowa State University and the University of Arkansas also took part. The findings appeared in Poultry Science magazine earlier this year.
Vitamin E is found in oils from vegetables, grains and animals. It helps protect some kinds of fatty acids that are necessary for healthy cells. Vitamin E helps prevent oxygen from combining with these fats to cause damage to cells.
Turkeys need vitamin E for normal development. But the scientists added extra amounts to the diet of two groups of turkeys. The birds were one day old. Two other groups were not given any extra vitamin E. After six weeks, the researchers infected all the young turkeys with listeria. The scientists then tested the birds for the presence of the bacteria over a period of time.
The results showed that the birds that received extra vitamin E did not get infected as often as the others. The birds that received the largest amount had the lowest number of infections.
The scientists say vitamin E has a similar effect on chickens. They say chickens and turkeys that receive added vitamin E develop more infection-fighting cells called lymphocytes. The increased number of these cells appears to also help protect against other diseases that can be carried by birds.
The scientists continue tests. They want to see if vitamin E can stop other dangerous bacteria that can enter food. They are testing it against salmonella and Campylobacter.
What is the best title for this article?
选项
A、The seriousness of Literia
B、Protection of the poultry
C、The New Discovery about Vitamin E
D、Research in the Universities
答案
C
解析
主旨题。通读全文可知,整篇文章都在讲术关于维生素E的新发现,即可以防止李氏杆菌病。故答案为C。
转载请注明原文地址:https://kaotiyun.com/show/zgq7777K
0
大学英语四级
相关试题推荐
Alotofpeopleinstinctivelybelieve—withoutreallyknowing—thatpoorreadersarenotespeciallysmart.Anewstudybyres
Alotofpeopleinstinctivelybelieve—withoutreallyknowing—thatpoorreadersarenotespeciallysmart.Anewstudybyres
Alotofpeopleinstinctivelybelieve—withoutreallyknowing—thatpoorreadersarenotespeciallysmart.Anewstudybyres
A、Thewomanshouldbealerttoheavytraffic.B、Manypeoplegotothecountrysideattheweekend.C、Thewomanshouldguardagain
Peoplewhosejobsrequirethemtositforlongperiodsoftimesufferasmuchfrombackpainaspeoplewholiftalldaylong.
Peoplewhosejobsrequirethemtositforlongperiodsoftimesufferasmuchfrombackpainaspeoplewholiftalldaylong.
Peoplewhosejobsrequirethemtositforlongperiodsoftimesufferasmuchfrombackpainaspeoplewholiftalldaylong.
Peoplewhosejobsrequirethemtositforlongperiodsoftimesufferasmuchfrombackpainaspeoplewholiftalldaylong.
随机试题
丹参在清营汤中的作用是
毛泽东提出对待古今中外一切文化成果的方针是( )
50岁妇女,2个月来因消瘦行妇科检查发现盆腔肿物。胃溃疡20多年,已绝经2年。妇科检查:阴道正常,宫颈光滑,子宫平位,正常大小,子宫两侧均可及直径10cm大小实性肿物,活动,与子宫可分开。应考虑为下列哪一项
根据《国家突发重大动物疫情应急预案》,在特别重大突发动物疫情的应急响应中,不属于兽医行政管理部门的职责是
A.脂肪变性层B.透明层C.脱矿层D.细菌侵入层E.坏死崩解层
A.15日前B.30日C.60日前D.6个月《药品经营许可证》的许可事项发生变更的,提出变更登记申请期限为许可事项发生变更
下列关于偿债备付率的表述中,正确的是( )。
金融市场最基本的功能是()。
甲是中国公民,在境内开办了A、B两个个人独资企业,2008年10月,A企业取得的收入总额为10万元,B企业取得的收入总额为20万元,A企业和B企业均采用核定征收办法,核定的应税所得率均为20%;同月,甲出版书籍取得稿酬收入5万元;转让股票取得转让收益5万元
WilliamShakespeare(1564-1616)wrotemanyplaysandpoemswhichareknowntheworldover.IfyouthinktheworksofanElizabe
最新回复
(
0
)