herd

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Related to the herd instinct: Herd behavior

herd

(hĕrd),
A group of people or animals in a given area.
[O.E. heord]

herd

(hĕrd)
A group of people or animals in a given area.
[O.E. heord]

herd

[AS. heord]
Any large aggregation of people or animals.

herd

a group of animals, usually cattle, or pigs, or related wild animal species, which live a collective life together. This may be a natural pattern of behavior or be imposed by a human operated management system.

herd abnormality
an abnormality detectable only by examination of epidemiological data, e.g. milk yield per hectare, conception rate to first service.
herd composition
includes bulls (where applicable), cows in milk, dry cows, heifers not yet calved, bred heifers, virgin heifers, yearlings, calves weaned and suckers or at foot. Called also herd structure.
herd diagnosis
a diagnosis made to fit a herd problem which may be, for example, a low reproduction rate, or wool yield, or win rate at the races.
dairy herd
herd used exclusively for milk production.
herd epidemic
an epidemic confined to one herd.
herd fertility control scheme
programs based on surveillance of all reproduction data and comparison of indexes with preset targets. Correction of inefficiencies may be implemented by the farmer but diagnosis of the cause and treatments and prophylaxes are largely the province of the veterinarian.
herd health program
a health management system based on periodic visits to the herd by a veterinarian to check the status of a series of identifiable health parameters including production, reproductive efficiency, mastitis prevalence, calf survival, cow culling and mortality rate, fecal egg counts. Superior programs also include production management so that genetics, nutrition, housing, disease control and financial management are coordinated in a wholefarm approach.
herd immunity
a level of resistance in a herd or flock which is sufficient to prevent the entry of a particular disease into, or its spread within, the herd. The resistance may be innate, a genetically based resistance, or acquired as a result of previous exposure to the particular agent or of vaccination. The general usage of the term relates to the prevention of spread of infection at an epidemic level. So that in a herd in which there are 70 to 80% of immune animals there may be sporadic cases but the prevalence is unlikely to be significant. The same comments apply to larger populations, e.g. a wild animal or companion animal population which is really not managed as a herd.
herd level test
test performed on the entire herd or an adequate sample of it.
rolling herd average (RHA)
the average milk production per herd per year based on the 12 months just finished. Upon completion of a new test record, usually at monthly intervals, the record for the same period of the previous year is deducted and the new record is added, then a new rolling 365-day average is calculated. RHSs are updated with each new test. See also moving average.
herd sampling
examination, either physical or clinical pathological, of a herd to determine the herd status in a particular epidemiological parameter.
herd size
a critical factor in planning for productivity efficiency. May be quoted as the number of animals of a particular age or stage of production, e.g. milking cows, assuming that other, usually young, stock are also carried on the farm.
herd structure
see herd composition (above).
herd udder health
status of the herd with respect to the prevalence of quarter infection, clinical mastitis, teat lesions.
References in periodicals archive ?
58) The nature of the herd instinct in Trotter's treatment of it, on the other hand, allowed a critical capacity of the healthy mind to come into view: the sensitiveness to environmental influences which the gregarious animal must develop to survive, emphasising the pervasiveness and creativity of processes of imitation and suggestion across the whole landscape of everyday life (Instincts, p87).
The herd instinct was a prime factor in a number of financial disasters, most recently the 2000 to 2001 "tech wreck.
It must become a habit of the mind, nurtured in newsroom environments open to fresh ideas, encouraging of creative ways of looking at old subjects and resistant to the herd instinct.
The unflattering canine term is applied to horses who, either through a retention of the herd instinct or just pure laziness, refuse to run as fast as they can.
Although we'll never know for certain, the number 250,000 probably evolved out of sloppy reporting of Bosnian government claims, a demonstration of the herd instinct at work among journalists.
Titled "Resisting the Herd Instinct in a Down Market: A Maverick's Guide to CRM Outcomes," this issue discusses the importance of taking a more "balanced" approach to CRM Outcomes, rather than over-emphasizing one area.
The trouble with this thinking is it is prone to what businessman Warren Buffett calls 'Mr Market' which can be overzealous and under-zealous as the herd instinct takes control of the price.
But despite the fact the herd instinct has much to do with the severe fluctuations on the money markets, investors should have realised by now that past history has shown a large market downturn is eventually followed by a market recovery.
We are always being told that horses are 'flight' animals, who are encouraged to run by the herd instinct.
TUC general secretary Brendan Barber said: 'The bank was right to ignore the herd instinct of the City, urging a higher rate.
Judge Gerald Price told them, "It was the herd instinct.