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
160
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
A、ThemancouldnotwaittoseeSusan.B、Susaniseagertopasstheinformationsheknows.C、Susantalkstopeopleonlyonthep
Americanshavelonger,butnotnecessarilyhealthierlivesduetohighratesofpreventablechronicdisease,accordingtoanann
A、Shegotapairoffunnyglassessometimeago.B、Manypeopleaskedherwhysheworemakeup.C、Shehasonlymadesomechangesf
Two-thirdsofAmericansareoverweightorobese.Developingcountriesarecatchingup.InChinanearly30%ofadultsaretoowid
Researchonfriendshiphasestablishedanumberoffacts,someinteresting,someevenuseful.Didyouknowthattheaveragestud
Unlikeothercountrieswhereitiscommontoseetwowomenortwomenholdinghands,suchbehaviorisfrowneduponinWesternco
A、Shecouldn’ttellredfromgreen.B、Shewastoooldtoseethetrafficlight.C、Shedrovetoofasttostopthecar.D、Shewas
A、Thereweretoomanycars.B、Hesawatrafficaccident.C、Hehitacarinfrontofhim.D、Hiscarsuddenlyflamedout.A男士说最近一次
TheymaynothavethenamerecognitionofaGoogleoraYahoo,buttheycanclaimtobelonginthesameleague.Thewebsitesof
随机试题
间变性肿瘤是指
药物相互作用对药效学的影响A、拮抗作用B、敏感化作用C、作用相加或增加疗效D、增加毒性或不良反应E、协同作用和减少不良反应甲氧氯普胺不宜联用吩噻嗪类抗精神病药
某故意杀人案,经过一审、二审后,判处被告人死刑缓期执行。在死刑缓期执行期间,真凶出现并供述了杀人的全过程,人民检察院提起抗诉,下列关于审判监督程序的表述错误的是:()
分析取源部件的取样点的周围不应有()和物料堵塞或非生产过程的化学反应。
某建设单位准备建一座图书馆,建筑面积5000m2,预算投资3500万元,建设工期为10个月。工程采用公开招标的方式确定承包商。按照(《中华人民共和国招标投标法》和《中华人民共和国建筑法》的规定,建设单位编制了招标文件,并向当地的建设行政管理部门提出了招标申
下列选项中属于银行汇票的绝对记载事项的有( )。
2005年5月23日,中国人民银行发布了《短期融资券管理办法》。根据该办法规定,短期融资券是指企业依照该办法规定的条件和程序在证券交易所发行和交易,约定在一定期限内还本付息,最长期限不超过两年的有价证券。()
甲公司2×15年至2×20年发生以下交易或事项:2×15年12月31日购入一栋管理用办公楼,实际取得成本为6000万元。该办公楼预计使用年限为20年,预计净残值为零,采用年限平均法计提折旧。因公司迁址,2×18年6月30日甲公司与乙公司签订租赁协议。该协
制作感觉比率量表的直接方法是()
Howmanytabletsatmostcanapersonover12havein24hours?Whatistheadviceforonewhocannotsleepwellaftertakingt
最新回复
(
0
)