calving


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calving

act of parturition in a bovine female, and presumably in any animal that bears a calf as its newborn. See also block calving, ease of calving.

calving-to-conception interval
interval between calving and the next conception date.
difficult calving
calving facilities
yards, crush, chute, hot and cold water, shelter, all the resources necessary for capturing and restraining a cow while helping her to deliver a calf.
calving-to-first-estrus interval
interval between calving and the first observed estrus. Data used as a measure of reproductive performance, especially dairy herds where block mating needs to be completed in as brief an interval as possible.
calving-to-first-service interval
alternative to calving-to-first-estrus interval but does not take into account any deferral of mating for managerial reasons.
calving grounds
cows that are run on very extensive grazing may need to be under close surveillance by calving time. A small area of land can be enclosed or the herd herded into it—the calving ground.
calving index
any method of expressing reproductive efficiency on the basis of the number of calves produced. May refer to the average calving interval or to the percentage of calves produced by the mated group of cows.
calving induction
see parturition induction.
calving injury
damage to the uterus, vagina and vulva or surrounding tissues, especially obturator and sciatic nerves, caused by the parturition process.
calving interval
the average time interval between successive calvings.
calving pad
a small area specifically prepared with sand or limestone base and bedding of material such as rice hulls or sawdust, where all cows are located for calving. Allows intense supervision of periparturient and calving cows.
calving paralysis
see maternal obstetric paralysis.
calving pattern
of a herd is a chronological list of calving dates. In seasonally calving herds a compact list indicates high fertility, a stretched out list indicates an indifferent fertility level.
calving percentage
see calf crop percentage.
calving record
a record of the reproductive efficiency of each dam in the form of dates, events and procedures related to reproductive function.
calving season
season of the year at which the herd, or other population of cows, calves, e.g. spring calving.
seasonal calving
when the cows in a herd calve at about the same time. Thus spring calving, autumn calving. Usually used as a management tool to take maximum advantage of seasonal feed supplies or climate.
year-round calving
herd management system in which cows are mated so that some cows in the herd will calve at all times of the year thus maintaining a regular milk supply for a fresh milk supply.
References in periodicals archive ?
Our results indicate that application of Ontario' s Moose Habitat Guidelines (OMNR 1988) may reduce the distance between successive calving sites used by cow moose.
In some cases prolonged calvings can result in more calf deaths.
Fitted to a cow close to calving, Moocall sent out a text message an hour before she calved.
Asked whether the EAD is making any preparations to facilitate the calving season, the official said there is nothing to do but monitor it because it is a natural process.
Cows are housed over winter and, for ease of management, all calving is done indoors.
b = The vector of fixed effects consisting of herd and birth year for FC, DIM, LS, LP and fixed effects consisting of herd and birth year and calving year for SC and TC,
Table 3 shows the effect of sex of calf, parity of cow or season of calving on the age at first calving and calving interval of the Friesian x Sanga cows.
Calving begins in northeast Minnesota and Ontario around 10 May, with peak calving during the following 3 weeks (Addison et al.
The floppy vulva is a sign that the cow or heifer is approaching her calving date, but she can still keep you guessing awhile because some individuals become loose and floppy several weeks before calving.
Calving difficulty--or dystocia--can cause the death of calves and cows, increase the susceptibility of calves to disease, and lower weaning weights.
He also contends that this calving does not in itself signal any catastrophic global warming trend.
Calving among red deer occurs an average of 233 days after conception.