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
2024-02-06
19
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/3426923.html
相关试题推荐
Theneedforbirthcontrolmethodshasdevelopedfairlyrecently,withthed
Theneedforbirthcontrolmethodshasdevelopedfairlyrecently,withthed
Theneedforbirthcontrolmethodshasdevelopedfairlyrecently,withthed
Theneedforbirthcontrolmethodshasdevelopedfairlyrecently,withthed
[originaltext]Recentlysomeresearchersconductedaninterestingcasestudy
[originaltext]Recentlysomeresearchersconductedaninterestingcasestudy
[originaltext]Recentlysomeresearchersconductedaninterestingcasestudy
Whydoescreamgobadfasterthanbutter?Someresearchersthinkthatitcom
Whydoescreamgobadfasterthanbutter?Someresearchersthinkthatitcom
Whydoescreamgobadfasterthanbutter?Someresearchersthinkthatitcom
随机试题
TheSupremeCourt’sdecisionsonphysician-assistedsuicidecarryimportant
[originaltext]M:Goodmorning,thisisAllenPiercebroadcastingfromuniversit
A.较大子宫壁间肌瘤 B.输卵管炎症 C.子宫内膜异位症 D.宫颈原位癌
有些人煮稀饭为了增加粘稠性而加碱,这种烹调方式损失最多的营养素是( )。A.蛋
深昏迷时以下哪种反射消失?()A.角膜反射 B.咳嗽反射 C.吞咽反射
参苓白术散主治A.脾胃虚寒证 B.脾虚食滞证 C.脾虚痰湿证 D.脾胃气虚
/t/isnotfullypronouncedin__________.
用过氧化氢液进行口腔含漱,其浓度为()。A.0.05% B.0.1% C.
在如图23所示电路中,稳压管DZ1的稳定电压为5V,DZ2的稳定电压为7V,则输
郭念锋提出的评估心理健康水平的标准包栝()。 (A)心理活动的灵活性(B
最新回复
(
0
)