Navigation Links
British cattle give TB to badgers, finds UC Davis expert

The controversial practice of killing wild badgers to prevent tuberculosis in cattle is unlikely to succeed, according to a newstudy led by Rosie Woodroffe, an ecologist at the University ofCalifornia, Davis, and a member of Britain's Independent Scientific Group on Cattle TB.

In Britain, farming interests and badger protectionists have battled for 30 years over the merits of culling badgers to fight cattle tuberculosis, a disease which can occasionally be transmitted to people. Farming ministers are currently deciding whether culling should be continued, following a public consultation on the issue which provoked over 47,000 responses.

Woodroffe's report, published Oct. 2 in the Proceedings of theNational Academy of Sciences of the USA, highlights the limitations of badger culling as a control strategy for cattle TB.

Woodroffe examined the outcomes when badgers were culled as part of a seven-year experiment conducted by the British Department for Environment, Food and Rural Affairs. Conventional wisdom suggested that this should reduce transmission among badgers, as well as from badgers to cattle. Instead, after four years of culling, infection rates in badger had doubled.

"Culling disrupts badgers' territorial behavior so they travel further and interact with more other badgers; that is probably why disease spreads more rapidly," said Woodroffe, the leader of a team which also included researchers from Britain's Central Science Laboratory and Veterinary Laboratories Agency. The biggest increases in infection rates happened in culling areas that could most easily be repopulated by badgers migrating in from neighboring land.

Today's report also provides the first evidence of widespread TB transmission from cattle to badgers. Woodroffe's team found that in 2001, when a nationwide epidemic of foot-and-mouth disease in England temporarily halted routine TB testing of cattle, infection rates in badgers doubled. At this time, infect ed cattle remained in their herds and the researchers suggest that this allowed them to transmit the disease to other cattle and to badgers.

"Our findings helps to explain why badger culling has had limited success as a TB control strategy," noted Woodroffe.

An earlier study by the same research team showed that badger culling reduced TB infection in cattle by just 19 percent inside the culling areas, and actually increased cattle TB on neighboring farms.

"In the past, policymakers assumed that infected badgers were the source of most cattle TB cases, and could be 'cleaned out' by culling," Woodroffe said. "But our results show not only that culling can increase TB in badger populations, but also that cattle themselves play an important role in maintaining the infection."


'"/>

Source:University of California - Davis


Related biology news :

1. Oil spills and climate change double the mortality rate of British seabirds
2. Oldest dated evidence of cattle in southern Africa found
3. Retinal scans eyed for New Mexico show cattle
4. Genomics-based vaccine could prevent deadly cattle disease
5. Current human embryonic stem cell lines contaminated UCSD/Salk team finds
6. Study finds more than one-third of human genome regulated by RNA
7. ASU researchers finds novel chemistry at work to provide parrots vibrant red colors
8. Same mutation aided evolution in many fish species, Stanford study finds
9. NC State scientist finds soft tissue in T. rex bones
10. Genrate: a generative model that finds and scores new genes and exons in genomic microarray data
11. Genetically modified rice in China benefits farmers health, study finds
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/16/2017)... HANOVER, Germany , March 16, 2017 CeBIT 2017 - Against ... Continue Reading ... Used combined in one project, multi-biometric solutions ... ... Identification Systems) ...
(Date:3/7/2017)... , March 7, 2017   HireVue , ... top global companies identify the best talent, faster, today ... Chief Sales Officer (CSO) and Diana Kucer ... round out a seasoned executive team poised to drive continued ... building on a year of record bookings in 2017. ...
(Date:3/2/2017)... , March 2, 2017 Australian stem ... (ASX: CYP), has signed an agreement with the ... the Monash Biomedicine Discovery Institute and Department of Pharmacology ... conduct a further preclinical study to support the use ... of asthma.  Asthma is a chronic, ...
Breaking Biology News(10 mins):
(Date:3/30/2017)... ... March 30, 2017 , ... Accelovance, ... medicine, recently announced the hiring of Bruce Wakeman into the role of VP ... Associate Vice President, Proposals & Marketing. , Bruce brings Accelovance over 20 years’ ...
(Date:3/30/2017)... 30, 2017 Personal Genome Diagnostics Inc. (PGDx) today ... American Association for Cancer Research (AACR) Annual Meeting 2017, being ... D.C.  The company also announced that five scientists associated with ... th Annual AACR Team Science Award. ... Doug Ward , ...
(Date:3/29/2017)... March 29, 2017 QIAGEN N.V. (NASDAQ: QGEN ... the U.S. launch of its ipsogen ® JAK2 RGQ PCR ... and Drug Administration as a qualitative in vitro diagnostic test for the detection ... ... processed on QIAGEN,s Rotor-Gene ® Q MDx system, which is a member ...
(Date:3/29/2017)... , ... March 29, 2017 , ... ... announce that Nerium International Mexico has been approved as an active member of ... achieve satisfaction and protection among distributers and consumers in relationship marketing. This professional ...
Breaking Biology Technology: