نتایج جستجو برای: culling

تعداد نتایج: 2053  

2010
Helen E. Jenkins Rosie Woodroffe Christl A. Donnelly

BACKGROUND In the British Isles, control of cattle tuberculosis (TB) is hindered by persistent infection of wild badger (Meles meles) populations. A large-scale field trial--the Randomised Badger Culling Trial (RBCT)--previously showed that widespread badger culling produced modest reductions in cattle TB incidence during culling, which were offset by elevated TB risks for cattle on adjoining l...

2016
Jenkins

In the British Isles, control of cattle tuberculosis (TB) is hindered by persistent infection of wild badger (Meles meles) populations. A large­scale field trial—the Randomised Badger Culling Trial (RBCT)—previously showed that widespread badger culling produced modest reductions in cattle TB incidence during culling, which were offset by elevated TB risks for cattle on adjoining lands. Once cu...

A. Sedighi G. R. Mohammadi,

This study was designed to determine the culling rates of 23 Holstein dairy herds (with an average size of180 cows per herd) in Neyshabur area in northeastern Iran over a period of three years from 2001 to 2003.The average annual culling rate was 13.1%, (98.5% involuntary and 1.5% voluntary). Of the total disposals(1612 cows), 53.48% were culled by the end of five years of age. Poor fertility w...

2012
Maryam Ansari-Lari Mehdi Mohebbi-Fani Abbas Rowshan-Ghasrodashti

This study was designed to investigate causes of culling in industrial dairy herds in Fars province and to describe the pattern of reason-specific culling with respect to age of animal and interval from calving to culling. A total number of 9 dairy herds were selected for the study and information about culling reasons, birth date, last calving date and culling date was collected for culled cow...

Journal: :iranian journal of veterinary research 2009
g. r. mohammadi a. sedighi

this study was designed to determine the culling rates of 23 holstein dairy herds (with an average size of180 cows per herd) in neyshabur area in northeastern iran over a period of three years from 2001 to 2003.the average annual culling rate was 13.1%, (98.5% involuntary and 1.5% voluntary). of the total disposals(1612 cows), 53.48% were culled by the end of five years of age. poor fertility w...

Journal: :International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases 2008
Helen E Jenkins Rosie Woodroffe Christl A Donnelly

BACKGROUND The effective control of human and livestock diseases is challenging where infection persists in wildlife populations. The Randomised Badger Culling Trial (RBCT) demonstrated that, while it was underway, proactive badger (Meles meles) culling reduced bovine tuberculosis (TB) incidence inside culled areas but increased incidence in neighboring areas, suggesting that the costs of such ...

Journal: :Journal of animal science 2012
Yosuke Sasaki Yuzo Koketsu

The objective of the present study was to investigate culling guidelines for gilts and sows in Japanese commercial herds and to compare differences between culling guidelines and actual culling practices in different herd productivity groups. A questionnaire survey was undertaken to obtain information on culling guidelines in 115 commercial swine herds that participated in the PigCHAMP data-sha...

2015
C. A. Donnelly A. I. Bento A. V. Goodchild S. H. Downs

In the UK, badgers (Meles meles) are a well-known reservoir of infection, and there has been lively debate about whether badger culling should play a role within the British Government's strategy to control and eventually eradicate tuberculosis (TB) in cattle. The key source of information on the potential for badger culling to reduce cattle TB in high-cattle-TB-incidence areas remains the Rand...

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