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
2014-12-31
137
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.
Who took part in the research?
选项
A、Researchers from the University of Arkansas.
B、Researchers from Iowa State University.
C、Irene Wseley.
D、All the above.
答案
D
解析
细节题。根据短文第三段内容可判断出参与此研究的包括A、B、C三项,故D选项All the above正确。
转载请注明原文地址:https://kaotiyun.com/show/tRq7777K
0
大学英语四级
相关试题推荐
Americanshavelonger,butnotnecessarilyhealthierlivesduetohighratesofpreventablechronicdisease,accordingtoanann
Americanshavelonger,butnotnecessarilyhealthierlivesduetohighratesofpreventablechronicdisease,accordingtoanann
A、Inabank.B、Inasupermarket.C、Inadoctor’soffice.D、Inalawyer’soffice.A场景推断题。男士告诉女士有关他的账户有几件事情不是很清楚,他想问女士几个问题;女士请男士首先
A、Tochatonlinewithhisbrother.B、Tosearchforinformationforhisresearch.C、Tojointhenewsgroupfordiscussion.D、Togi
A、Itismeanttoprotecttheteendrivers.B、Nightdrivinganddrunkendrivingarebanned.C、Thesystemhasbeenputintoeffect
HappinessandSadnessHappinessandsadnessaretwomostbasicandfamiliarfeelingsforhumanbeings.Recently,peoplehave
HappinessandSadnessHappinessandsadnessaretwomostbasicandfamiliarfeelingsforhumanbeings.Recently,peoplehave
Unlikeothercountrieswhereitiscommontoseetwowomenortwomenholdinghands,suchbehaviorisfrowneduponinWesternco
TodayAmericanparentsarefindingthemselvesinadilemmaabouthowtodealwithteenagedrinking,aserioussocialproblem.A
A、Thereweretoomanycars.B、Hesawatrafficaccident.C、Hehitacarinfrontofhim.D、Hiscarsuddenlyflamedout.A男士说最近一次
随机试题
甘草具有的功效是
伤寒肥达反应中,O凝集效价大于多少时有诊断价值
某药品生产企业研发出的新药经批准后进入了临床试验阶段上述临床试验的病例数
以下不应该按1/2计算建筑面积的是( )。
下列关于前期差错的表述中,正确的有()。
位于瑞典的宜家家居公司,是一个在44个国家有分公司、在2006年实现销售利润235亿美元的全球家居零售企业。该公司的愿景是“低价的完美设计和实用功能”。既讲究款式又要求低价的年轻消费者构成了宜家公司的目标市场。针对这些顾客,宜家公司提供的家具产品综合了如下
个案工作中经常采用的评估方法有()。
世界上跨经度最多的大洲是()。
近年来我国频繁发生的严重水旱灾害,造成重大生命财产损失,暴露出农田水利等基础设施十分薄弱,为此,2010年12月31日党中央、国务院发布了《关于加快水利改革发展的决定》,就大力加强水利建设提出了明确要求。为贯彻落实这一文件精神,具体部署有关工作,××市人民
A、AtacigarettestoreB、AtabusstationC、AtagasstationD、AtAuntMary’sC
最新回复
(
0
)