| Progressive atrophic rhinitis. |
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| The number of litters a female has farrowed. |
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| A sow that has been bred, but has not yet farrowed. |
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| Depopulating one area of the barn or phase of production. |
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| Giving birth; called farrowing or pigging in swine. |
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| A pork production system in which pigs are housed in large paddock containing grass or legume forages. Housing is usually limited to primitive, portable, open front buildings that are manually ventilated and bedded with straw, corn stalks or other materials as needed. |
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| Any organism that causes disease. |
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| Polymerase Chain Reaction. |
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| Virus and disease complex suspected to cause PMWS (post-weaning multisystemic wasting syndrome). |
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| A tabulation of names of ancestors, usually only those of the three closest generations. |
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| When a boar is placed in a pen with a group of sows to allow for breeding. |
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| Total consumption of a good divided by total U.S. population. Can be measured on a carcass weight, retail weight or a boneless equivalent basis. |
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| The record of the individual animal for reproduction, production, and carcass merit. |
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| The systematic collection of comparative production information for use in decision making to improve efficiency and profitability of pork production. |
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| The area between the anus and the vulva. |
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| A gelatinous protective covering on the hoof. Its purpose is to protect the uterus from kicking by the piglets. As soon as the piglet begins to walk the periople falls off the hoof. |
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| The hydrogen ion concentration of a solution. PH is commonly used as a measure of the acidity or alkalinity of a solution. A pH of 7 is neutral, pH measures above 7 are alkaline, while those below 7 are acid. |
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| A microscope with a special lens that allows you to observe cellular components without special staining techniques. |
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| The external appearance or a measurable characteristic of an individual. |
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| The observed relationship between traits, caused by both genetic and environmental effects. |
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| Porcine intestinal adenomatosis caused by Lawsonia intracellularis. |
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| A wholesale cut of pork comprised of the lower portion of the shoulder and front leg. |
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| Term usually applied to young, immature swine. |
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| The number of square feet (meters) per pig. |
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| The movement of pigs through a barn or series of barns. |
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| A young pig of either sex. |
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| The number of pigs that are born alive/yr divided by the average sow inventory in the same period. |
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| The sales of stated type/yr divided by the average sow inventory. |
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| The total number of pigs of a defined type sold/yr. |
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| The number of pigs weaned/yr divided by the average number of farrowing crates during the same time period. |
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| The number of pigs weaned/yr divided by the average female inventory during the same time period. |
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| The number of pigs weaned/yr divided by the average sow inventory during the same time period. |
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| The number of pigs weaned/yr divided by the average sow capacity during the same time period. |
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| Tissue associated with the uterus during pregnancy and through which the fetuses are nourished. |
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| The fluid portion of blood. |
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| Postweaning multisystemic wasting syndrome results in emaciation and is caused by porcine circovirus II. |
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| The meat of pigs. |
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| Any young hog. |
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| The air pressure within the building is slightly higher than outside, causing air to be forced out of the building. |
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| The post-weaning death loss multiplied by 100 and divided by the number of pigs weaned in the same group. |
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| Pigs that die between weaning and slaughter, expressed as a percentage of the number of at-risk pigs. |
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| A measure of cutability and growth combined, it is calculated from predicted carcass lean divided by age in days. |
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| Porcine parvovirus. |
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| Pork Quality Assurance Program. Program designed to enhance the wholesomeness of pork by identifying the best management and treatment options for the herd. |
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| Porcine respiratory corona virus. |
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| The condition of a female animal having a living fetus in the uterus; occurs after the ovum has been fertilized by the male sperm cell. See: Gestation Period. |
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| The number of sows that become pregnant within 40 d of service divided by the number of sows serviced in the same time period. |
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| The birth of fetuses before the 110th day of pregnancy and survive for more than 24 hr. |
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| The number of preweaning death losses multiplied by 100 and divided by the number of live born pigs in the same group. |
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| A pig that is born alive but dies before weaning. |
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| Herd derived from caesarean section that is free of specific pathogens. |
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| The number of pounds of a specific meat produced. Determined by the number of animals slaughtered and the average weight of the animals. |
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| A criterion for measuring the relationship between income and expenses for different investments, operations, or firms. |
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| Determining the breeding value of an animal by studying its progeny. |
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| A fatty acid hormone that is produced by the uterus and contributes to the regression of the corpus luteum. |
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| A combination of analytical procedures used to quantify the protein, lipid, dry matter , ash and carbohydrate content. |
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| Porcine reproductive and respiratory syndrome. |
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| Porcine reproductive and respiratory syndrome virus. |
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| Pseudorabies virus, also called Aujeszky´s disease. |
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| Pale soft exudative muscle, associated with the PSS gene. |
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| Porcine stress syndrome. |
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| Designating an animal belonging to one of the recognized breeds of livestock. Such animals are registered or eligible for registry in the official herdbook of the breed. Purebred, registered, and pedigree stock are often used interchangeably, and the term "thoroughbred" is often improperly used for "purebred". |
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| Preweaning mortality. |