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
37
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] The disease caused by listeria______.
选项
A、is linked to poultry products cooked enough
B、is especially dangerous not only to newborn babies but also to people with weakened defenses
C、is not dangerous
D、is dangerous only to pregnant women and newborn babies
答案
B
解析
细节题。根据短文第二段第一句This disease is especially dangerous topregnant women,newborn babies and people with weakened defenses.可知,李氏杆菌病对孕妇、新生婴儿以及抵抗力差的人都有很大的危害。故答案为B。
转载请注明原文地址:https://tihaiku.com/zcyy/3385308.html
相关试题推荐
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillionsre
Researchershaveidentified1.4millionanimalspeciessofar—andmillion
Researchershaveidentified1.4millionanimalspeciessofar—andmillion
Researchershaveidentified1.4millionanimalspeciessofar—andmillion
Researchershaveidentified1.4millionanimalspeciessofar—andmillion
Researchershaveidentified1.4millionanimalspeciessofar—andmillion
Researchershaveidentified1.4millionanimalspeciessofar—andmillion
随机试题
在中国,食物是用大的公用盘子(communalplate)来盛装的,而且基本上都会提供公用的筷子来将食物从公用的盘子里弄到你自己的盘子里。如果有公用的
下列各项不属于绝对责任免除内容的是()A.不可抗力 B.他人的责任 C.
策划城市中商业步行区时,下列阐述中哪项是错误的?A.步行区内的步行道路和广场面积
交通事故中急救中毒伤员,以下做法错误的是()。A.尽快将中毒人员移出毒区 B.
动脉导管未闭A.肝脏收缩期搏动 B.GrA.hA.m-StE.E.
(2016年真题)下列关于债券的偿还期限,描述错误的是()。A.按偿还期限
下列各项中,不符合内部牵制的要求的是()。A、出纳人员管票据 B、出纳人员
Thechangeinthatvillagewasmiraculou
(2015年真题)关于税法属于义务性法规的说法,正确的有()A.纳税人履行纳税
下列不属于招标前使项目具备招标条件的准备工作的是()。A:按照国家有关规定需要履
最新回复
(
0
)