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 ?
Meurig Raymond, a Pembrokeshire farmer, wants Wales and the UK to follow Ireland's robust culling approach to the costly disease in cattle.
Regional Friends of Wildlife ACT had always been against the kangaroo culling and had been calling for the government to produce further scientific proof that culling is essential to Australia's ecology.
Lydia has set up a Coventry and Warwickshire Against the Badger Cull protest group, launching an online petition to Warwickshire County Council, Coventry City Council and Nuneaton and Bedworth Borough Council, hoping to force a debate in local council chambers and urging each authority to rule out any culling on council-owned land.
But opponents say culling the protected animal will have only a small effect on infection rates in cattle and will lead to badgers suffering.
They studied a treatment area (9,496 acres) where intensive culling was applied, and a control area of similar size (9,429 acres) where they did not cull any bucks.
Culling would mean the trapping, snaring, shooting and gassing of these creatures with an unknown effect on the ecosystem by their demise.
Officials have been culling birds since Saturday when a fresh outbreak of bird flu was reported in the region bordering Bangladesh.
Badger Trust Cymru spokesman Trevor Lawson said: "There is a very real danger that the Welsh Assembly Government will sleepwalk into badger culling despite the overwhelming evidence that it doesn't work.
The Environment, Food and Rural Affairs committee (Efra) said yesterday that badger culling should be given the go-ahead to tackle TB in cattle in high-risk areas - but only under certain conditions.
A recent test of badger removal in Ireland, which didn't look beyond the culling zones, found a drop in cattle-TB incidence.
Culling one of Australia's national icons will generate a negative image and drive away tourists, says Tabart.
ANTI-blood sport campaigners have demanded the Government follow Britain's lead and stop the culling of badgers.