culling


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Related to culling: gladiatorial

culling

(kul'ing)
1. The process of removal of abnormal or damaged blood cells from the circulation by the spleen.
2. In public health, slaughtering herds of potentially infected animals, to prevent the spread of diseases like avian influenza or mad cow disease to humans.
See: pitting; spleen

culling

removal of inferior animals from a group of breeding stock. The removal is premature, i.e. before completion of its life span, disposal of an animal from a herd or other group. In farm animals this means disposal because of their being superfluous to the needs of the group to maintain its size. Animals may be culled because of age, either because thay are too old or because they are very young and their retention would necessitate culling an older, more desirable animal. Animals may also be culled because of disease, failure to produce or reproduce, because of inherited defects or because of undesirable conformation or breed type. There are two general classes of culls, involuntary culls, e.g. deaths, and voluntary culls, e.g. age culls.

biological culling
culling of animals on the biological grounds of incapacity to pass a productivity test.
culling program
a set of rules for a manager to follow in carrying out culling within a herd.
culling rate
the number of animals culled as a proportion of the number of animals from which the culling was done.
References in periodicals archive ?
The YouGov poll also revealed few people think badger culling is an important issue for the country, with just 2% listing it as one of the five top subjects, compared to more than three-quarters (77%) who thought the economy was important and 64% who named immigration and asylum as key.
Once again, a campaigning group has been found guilty of misleading the general public regarding the issue of badger culling," said FUW vice president Brian Walters, the union's spokesman on bovine TB (bTB).
The study, funded by the Department for Environment Food and Rural Affairs (Defra), comes ahead of a Government announcement today on the controversial issue of badger culling.
They point to a 10-year study by the Independent Scientific Group (ISG Report) which concluded that "badger culling cannot meaningfully contribute to the future control of cattle TB in Britain.
It appeared likely the Environment Department would allow a cull, after experts including its chief scientist and chief vet concluded that co-ordinated and sustained culling of badgers, which can spread the disease to livestock, was likely to reduce TB rates in cattle.
They studied the Randomised Badger Culling Trial (RBCT) in England and found that while widespread culling does reduce cattle TB, the benefits disappeared within four years.
Ministers ordered part of a badger culling trial to be suspended yesterday after results showed it was counter-productive in the fight against tuberculosis in cattle.
And the only carrot we can possibly give them is culling badgers.
LOCALISED reactive badger culling can more than double the risk of TB infecting cattle, a new study has shown.
If the review is granted by the High Court, the Trust hopes it will be heard before the culling starts.
Warwickshire Badger Group committee member Mr Jack Reedy said extensive culling of badgers had been progressively discredited over the past 23 years.
Germany, Poland and Spain have been killing deer and wild boar, and the Australians have been culling feral water buffalo.