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 ?
2008) noted that F1 Montbeliarde x Holstein cows had shorter intervals from calving to first service than pure Holstein cows.
This study included field records on calving from Holstein heifers (first calving cows) that calved between 1993 and 2015.
The age at first calving has major implications for the lifetime production of a breeding suckler cow," she said.
As well as age at first calving, calving spread has a huge impact on calving interval.
Subsequent aerial surveys in 2007-09 revealed progressively lower numbers of breeding cows on a reduced fraction of the traditional Beverly calving grounds (Fig.
Earlier, dolphin calving was not detected as there was no dedicated research institute or researchers on dolphins in Abu Dhabi, senior officials told Gulf News.
Two of the Eugenie x Blackberet heifers have since been introduced into the flushing programme The Tweeddale herd has three main calving blocks, providing a year-round supply of pedigree bulls from their Limousin and Charolais herds.
Sex of calf and season of calving did not have a significant (P > 0.
It is best to provide single calving pen for individual pregnant animals to prevent cross infection.
Over the last few months we have been called to two or three calvings per day.
1999), and may be important to consider as influencing choice of calving habitat in Minnesota where black bear (Ursus americanus) and wolves (Canis lupus) occur.
Secondly, if a cow is zero-grazed for some of her life it does not mean she will not go outdoors--many go outside to exercise and spend up to three months outdoors before calving.