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| Offspring resulting from the mating of a purebred boar to a purebred female of another breed. |
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| The second-generation progeny produced by crossing two F1 individuals. |
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| To give birth to piglets. |
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| A production system that contains all production phases, from breeding to gestation to farrowing to nursery to grow-finishing to market. |
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| Normal-delivery of one or more live, stillborn, or mummified pigs, on or after the 110th day of pregnancy. |
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| A crate or cage in which a sow is placed at time of farrowing. The crate is constructed as to prevent the sow from turning around or crushing the newborn pigs as she lies down. |
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| The date on which the first pig of the litter was born. |
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| The number of farrowings per sow per year divided by average sow inventory. |
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| The number of days between a sow´s two consecutive farrowing dates. |
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| The number of farrowings/yr divided by the number of farrowing services. |
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| The number of sows that farrowed divided by (the number of services minus the number of sows that were culled for non-reproductive reasons). |
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| Failure to farrow within 120 d after an effective service. |
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| (1) Grain, or other processed feed for livestock. (2) The quantity of feed in one portion. (3) To furnish with essential nutrients. |
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| The initial feed inventory, plus feed purchases and farm-produced feed; subtract the ending feed inventory, feed sales, and feed eaten by other livestock. |
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| The rate at which an animal converts feed to meat. Calculated as the amount of feed used divided by the total weight gained: If an animal consumes 25 lb of feed and gains 9 lb, it is said to have a 2.78 feed conversion ratio. |
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| A term for the number of pounds of feed required for an animal to gain 1 lb of weight. See also Feed conversion ratio. |
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| The rate at which animals consume feed. NOTE: What we really measure is the rate of FEED DISAPPERANCE, which includes both consumption AND waste. In slatted systems with poorly-designed troughs, waste can easily exceed 5% of allocation. |
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| Feed that is fed but is not eaten. |
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| Feeding manure or tissues of pigs to gestating sows or gilts to expose them to infectious agents endemic to the herd. |
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| A pig 8-12 wk of age and approximately 50 lb (25 kg) that is transferred from the nursery to finishing unit. |
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| A production system where pigs are sold out of the nursery phase to a finishing operation to grow them to market weight. |
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| The total number of all maiden gilts on a farm or those selected from the finishing accommodation, plus all mated sows until they are culled and removed. |
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| A statistic reached by adding the culling percentage and the death percentage for all females in a herd. |
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| An unmated or mated female kept for breeding purposes. |
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| The average female inventory divided by the average boar (breeding and unworked) inventory. |
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| Union of the male´s sperm with the female´s egg. |
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| An unborn animal. |
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| To feed a pig until it reaches market weight. |
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| Stage after feeder pig - 50 lb (25 kg) to market weight 265 lb (120 kg). |
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| An operation that purchases feeder pigs and feeds them to market weight. |
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| The first-generation progeny that is produced by crossbreeding two different lines. |
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| After a successful pregnancy, a sow between the date of the first effective service and the date of the next effective service. |
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| A crossbreeding or hybrid system that places breeds or lines in fixed positions as sire and dam lines; the final progeny are slaughtered and purebred or crossbred parents are provided as replacements. |
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| Specialized housing with perforated floors and temperature-controlled environment for recently weaned pigs. |
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| Putting the pigs´ feed directly on the floor. |
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| Foot-and-mouth disease. |
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| Blister-like growths on the ovary. Follicles contain the eggs before ovulation and secrete hormones. |
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| Transferring piglets from one litter to another. |
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| Air speed in feet per minute. |
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| A feed or ration being fed to the limit of an animal´s appetite. |
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| Individuals that have the same parents; can include littermates and full brothers and sisters from repeated services of the same parents. |
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