首页
登录
职称英语
Researchers say extra vitamin E fed to turkeys appears to help control infec
Researchers say extra vitamin E fed to turkeys appears to help control infec
游客
2024-01-22
70
管理
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. [br] 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://tihaiku.com/zcyy/3385312.html
相关试题推荐
Researchershaveidentified1.4millionanimalspeciessofar—andmillion
Researchershaveidentified1.4millionanimalspeciessofar—andmillion
Researchershaveidentified1.4millionanimalspeciessofar—andmillion
[originaltext]Europehassomeofthetoughestguncontrollawsintheworld
[originaltext]Europehassomeofthetoughestguncontrollawsintheworld
[originaltext]Attheendofeveryyear,U.S.weatherresearcherslookback
[originaltext]Attheendofeveryyear,U.S.weatherresearcherslookback
[originaltext]ResearchersreportedtheirfindingsinTheLancetmedicaljou
[originaltext]ResearchersreportedtheirfindingsinTheLancetmedicaljou
[originaltext]Attheendofeveryyear,U.S.weatherresearcherslookback
随机试题
TheworksofallthefollowingwritersfeatureNaturalismEXCEPTA、FrankNorris.
数字证书被撤销后存放于( )。A.CA B.CRL C.ACL D.RA
通过样本记录值与审计值的差异来推断总体记录值与审计值差异,进而对总体记录值做出评
64、线路悬垂串第一片绝缘子采用大盘径绝缘子的,可以不拆除线路绝缘子上方的鸟巢。
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
“十三五”时期,我国经济社会发展应以提高发展质量和效益为中心,以()为主线。
干净、整洁、低能源消耗、是全世界都需要的东西,所以我从不怀疑"城市车"概念的__
下列不属于我国商业银行二级资本的是()A.二级资本工具及其溢价 B.资本公积
电气装置通电检查及调整试验的具体内容包括()。A.先一次回路通电检查,后二次回
最新回复
(
0
)