A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Daily live weight gain
The gross weight of a live animal as compared with the dressed weight after slaughter.
Dam
The female parent.
Dam line
A breed selected to contribute the female parents of the slaughter generation in a breeding program.
Days to market
The number of days from a pig´s date of birth to that pig´s date of slaughter.
Death percentage, females
The number of females that die/yr multiplied by 100 and divided by the average female inventory.
Death percentage, sows
The number of sows that die/yr multiplied by 100 and divided by the average sow inventory.
Demand
The quantities of a good consumers are willing and able to purchase at alternative prices.
Depopulation/Repopulation (Depop/repop)
Depopulating the entire farm, cleaning and disinfecting the facilities, and then repopulating with genetics free of specific diseases.
Depreciation
The decrease in value of business assets caused by wear and obsolescence.
Deviation
Difference between an individual record and the average for that trait for that contemporary group. These differences sum to zero when the correct average is used.
Diamond Skin disease
Caused by Erysipelothrix rhusiopathiae.
Didi Boar
A male with a portion of the epididymis removed and used for heat detection.
Diet
A regulated mixture of feedstuffs provided on a continuous or prescribed schedule. A balanced diet supplies all nutrients needed for normal health and production.
Differential
The differential refers to the temperature difference between activation or de-activation of ventilation stages and is generally an input on most controllers. The advantage is that all the temperature settings are relative to the set point temperature. If the set point is changed, all other stage settings remain the same relative to the set point.
Digestibility
Percentage of a feed that is digested and absorbed from the gastro-intestinal tract.
DNA
A linear chemical chain composed of alternating units of four different nucleic acids. The order of these units codes for various genotypes in the animals.
Dominance
Dominant genes affect the phenotype when present in either homozygous or heterozygous condition. A dominant gene need only be obtained from one parent to achieve expression.
Double Mating
Breeding a sow twice during one estrus cycle.
Down Time
Time during which there are no animals in the barn to enable cleaning and disinfecting.
Dressing percentage
Carcass weight divided by live weight and multiplied by 100.
Dry matter
Portion of a feed remaining after water is removed, usually expressed as a percent.
Duodenum
Upper part of small intestine into which the pancreas secretions and liver bile are emptied.