breed

D

Dacrocystitis

When the lacrimal sac becomes inflamed and tears, causing draining.

dacryoadenitis

A condition in which the lacrimal gland becomes inflamed.

dacryocystectomy

The process of removing the lacrimal sac by surgery

dacryocystotomy

The process of cutting into the lacrimal sac.

dairy herd improvement association (dhia)

A group that tests cows for milk and fat and keeps records of feeding.

dairy type

Any cow that is used for the production of milk products, not meat or reproduction.

daisy cutter

Any horse that barely touches the ground while trotting; prone to stumbling.

dam

Any female animal that has given birth.

dapple

A circular pattern of fur with an off color.

data

A collection of information that has been collected as pertaining to an experiment.

daughter

The female offspring of any living thing.

daughter cell

A cell that is formed when another cell divides

deacon

A calf marked for veal meat before it is a week old.

dead mouth

Term used to describe a horse who does not respond to directing by rein and bit as far as the mouth is concerned.

dead weight

The weight of meat after the animal has been slaughtered.

deaf ear

The folds of skin below the ear in a fowl bird.

deafness

Loss of hearing in whole or in part.

death loss

The number of animals lost as the result of death by accident, disease, or otherwise.

debarking

A procedure in which vocal cords are trimmed to make a dog’s bark less harsh.

debeaker

A tool used to cut the beak off of a chicken or turkey for the safety of other birds.

debeaking

The process of removing part of the beak to prevent damage to other chickens, cannibalism, and other undesirable behavior.

debilitated

Losing of strength; becoming weaker.

debridement

Removing foreign tissue or matter; taking out damaged or contaminated tissue.

decalcification

Removing calcium from an animal’s bones.

decay

Decomposing of matter with the help of fungus and bacteria; matter is completely oxidized.

deciduous teeth

Temporary teeth that go away as maturity approaches

decubital ulcer

A bedsore; loss of tissue or skin due to pressure being applied for too long.

deep

Below the surface of something, as in position.

defecation

The exiting of excrement from the body; bowel movements.

defect

a) Any blemish that impairs an animal’s value b) Any deviation from what is normally regarded as far as breed is concerned.

deferred grazing

The process of keeping livestock out of a pasture until there is enough flora to sustain grazing.

defibrillation

Using electrical shock to bring the heart beat back into normal limits.

deficiency

Less than what is normally required or needed of something

deflea

To remove the fleas off of an animal’s coat

deformity

Anything that looks different from what is considered to be normal and healthy for that species

degrease

The process of removing the oil from fiber

degree of grazing

Term refers to how closely grazed a pasture is; ungrazed, lightly grazed, etc.

dehiscence

Any opening in a wound from surgery

dehorn

To remove the horns or horn buds through heat, chemical, or other methods

dehorning clippers

Clippers used to remove the horns of certain animals; like large scissors

dehydrate

To take the moisture out of something

dehydration

A medical condition in which the body has lost fluid or water in excessive amounts

delactation

The condition of not being able to give milk

deleterious

Has the potential to cause harm to something

delivery

When the fetus leaves the body

delousing

The removal of lice from the skin with chemicals

demiluster

A type of wool that is somewhat lustrous but does not merit a classification of lustrous wool

demyelination

When myelin is lost or destroyed

dendrites

Small roots on neurons that receive impulses and send them the right way

density

a) Mass per volume b) The number of animals in a given area

dental calculus

A mineral deposit on the teeth; commonly referred to as tartar

dental caries

Cavities; decay of teeth

dental cup

A dip in the incisor teeth of horses; dark in color

dental formula

A guide to the number of teeth and kinds of teeth found in an animal’s mouth

dental pad

Term used in cattle terms; refers to the hard ridge in a cattle’s mouth that replaces upper teeth

dental plaque

A soft deposit from food left on the teeth; easily removed

denticulate

Small dentate teeth

dentin

The tissue that holds the tooth in place in the mouth

dentition

Refers to the pattern of teeth; the way teeth are arranged

deoxyribonucleic acid (dna)

Nucleic acid that carries genetic information

depauperatum

Stunted; limited in growth

depot fat

Fat that has collected in the body

depraved appetite

A type of appetite or craving not normal in an animal

dermal

Related to or of the skin

dermatitis

A condition in which the skin becomes inflamed

dermatologist

A professional who deals with studying the skin

dermatology

The study of skin

dermatomycosis

A growth on the skin due to a type of fungus

dermatophyte

A type of fungus that can be found on the skin

dermatosis

A condition of the skin

dermis

The skin; also referred to as the corium

descending

Moving downward or toward the end

determinant growth

Growth that will only reach a certain point once a certain age has been reached

deutectomy

Removal of the yolk sack from chicks that were just born

dewclaw

The first digit on dogs and cats; has no function

dewlap

The pendulum of skin hanging from an animal’s throat

deworm

To get rid of parasitic worms in an animal

dialysis

A procedure used to get waste out of the blood when the kidneys are unable to function

diaphragm

The muscle in the abdomen that aids in breathing

diarrhea

Fecal material that is wary in consistency

diastole

The dilation of the ventricles of the heart

dickey

A donkey or bird; slang word

diecious

Animals that possess both male and female traits

diestrus

The time between estrous cycles

dietary fiber

Material from plants that resists the action of enzymes in the digestive system

differentiation

The process of developing different organisms over evolution

diffusion

Movement of material from an area highly concentrated to an area where there is a lower concentration

digestibility

How easily a substance can be turned into an appropriate digestible form

digestible energy

The amount of energy that can be obtained from the digestible portion of any amount of food

digestible nutrient

The amount of a certain nutrient that can be digested into the body

digestible protein

The amount of protein that can be absorbed into an animal’s system

digestive tract

The whole system involved in digestion from mouth to anus

digitigrade

The act of walking on the toes

dilate

To make something wider

dilation

The widening of something

diluent

Any material that is designed to dilute another ingredient

dilute

To make something weaker or more liquid by mixing it with something else

diluted color

Term used to refer to the colors of feather in chickens; indicates a softer color, like tan

diluted feed

Feed with a great deal of fiber

diluters

A fluid that is used to make more semen and increase its volume

diopter

A measurement unit; refers to the refractivity in a lens

diplopia

Having double-sightedness

dipping vat

A tub filled with a chemical; animals are dipped into it to be disinfected or rid of parasites

disbud

To remove the horns of young animals by heat or chemicals

disc fenestration

Removing a disc in the spine by cutting it and scraping out the contents

discharge

Any substance that oozed from a wound or an opening in the body

discriminate breeder

An animal that is picky when it comes to breeding partners

disease control

A process that helps to control the effect of organisms that are known to cause disease or contribute to diseased conditions

disease resistant

Refers to animals or plants that can hold up against certain diseases

disinfect

To take the organisms that may cause disease out of an object

disinfectant

Anything that is designed to kill those organisms that are known to cause disease

dismount

To get down; to get off of

disorientation

A medical condition; has to do with confusion

disposition

An animal’s attitude or temperament

disqualification

In terms of animal husbandry, term refers to some defect that prevents an animal from registering with the breed or participating in a show

dissect

To cut something out in order to examine it

distal

The furthest distance from the middle or the top of a body

distal convoluted tubules

The tubes that can be found between the Hene and the tubules around it

distal spots

Spots or circles that are found on the coronet band

distention

The process of making something larger by dilating or stretching it

distichia

Two sets of eyelashes; often results in an injury to the lining of the eye

distichiasis

A condition in which there are two rows of lashes in place of one

distributor

A type of device that spreads milk out in order to let it cool

diuresis

The increase in the amount of urine produced

diuretic

Anything that causes excessive urination

diverticulitis

An inflammation of the diverticulum

diverticulum

The sac in the wall of a tube shaped organ

dizygotic twins

Term for twins that develop from two separately fertilized ovaries

dobbin

The term used to denote a gentle horse; a term of affection

docile

Indicates that an animal has a gentle nature

dock

To cut an animal’s tail short; also used to indicate the space where the tail was

docking

The removal of the tail or part of the tail; can also refer to a decrease in value

doddie

A cow that has been polled

doe

A female goat, rabbit, or deer that has not been spayed

dogie

A term used for a calf with no mother; slang term

dogtrot

A slow trot; gentle

dolichocephalic

A long head, usually very narrow like a greyhound

domesticate

To take a wild animal and put it under human control over an extended period of time; happens over generations

dominance

An animal’s tendency to overpower another, in character or in activity

dominant gene

The opposite of a recessive gene

donation

The act of creating or producing sound in something

donkey

An animal; also called an ass

dorsal

Refers to something being toward the back, as in a dorsal fin

dorsal plane

A line that divides the body in half, front to back (imaginary line)

dorsal recumbence

The act of an animal lying on its back

dorsoventral projection

A beam of ray that goes from the back to the stomach

dosage

The amount of medication to be administered

dosage interval

The length of time that should pass before a drug is administered again

dose

The amount of medicine to be given, measured in grams or units

dose syringe

A syringe that is used to forcefully give medicine to animals

double cross

To cross two hybrids of living thing

double mating

The process of mating livestock twice during estrous to ensure that they become pregnant; also called double cover

double reins

Two reins attached to two bits

double rigged saddle

A saddle with two cinches

downer

Term used to indicate an animal that is unable to stand due to illness

downy

Covered with weak, soft hairs or feathers

draft animal

An animal used to plow or pull loads; a working animal

draining pen

An enclosure with a sloped bottom in which animals are placed after they are dipped; fluids drip off of the animals and into the vat of chemicals

drake

An adult male duck

drawing blood

The removal of blood from the body for diagnostic purposes

dress out

The process of removing feathers, skin, or fur and trimming a carcass

dress weight

The weight of a dressed animal versus its weight while live

dressage

A type of horseback riding in which the rider guides the animal rather than using hands and feet to do so

dressed weight

The weight of the carcass of an animal or a slaughtered bird

dressing comb

A type of comb used to beautify an animal’s coat for show; also referred to as a currycomb

dressing loss

The amount of weight lost in an animal before and after it is slaughtered

dressing percent

The number that is calculated when the carcass weight is divided by the weight of the live animal and multiplied by one hundred.

drinking cup

A device used for watering an animal; the opening has a floater in it that releases water when moved so the animal can drink at will.

drive-ins

Term used for cattle that are herded into the market versus those who get there by cattle transport or other methods

drop band

A herd of female goats or sheep that are separated for the purpose of having young

droppings

The feces of an animal

dropsy

Swelling throughout an animal’s entire body

drug residue

Anything left over from a drug in the body of an animal

dry band

A band of sheep where there are no lambs

dry cow

A cow that no longer gives milk

dry lot

An enclosure used to keep livestock to prepare for slaughter, including fattening

dry matter

The amount of matter in a certain type of feed without the moisture

dry period

The period of time before giving birth that an animal stops lactating

dry picked

The dressing of a bird without scalding; bird may have been bled already

dry rendered

What is left of animal tissue after it has been steamed until the water evaporated; a method of removing fat

drying off

The process of causing an animal to stop lactating when they are not producing much milk

dual purpose

Animals that are used for meat and milk

dual use range

A range that has enough forage so that two or more kinds of livestock can use the area separately or together

duckling

A young duck with down feathers

ductless glands

Glands in the body that secrete directly into the blood or lymph, like the endocrine glands

ducts

A passage in the body with walls

ductus deferens

The duct found at the end of the vas deferens

dummy

a) Term used for a horse who is not bright, due to injury or otherwise b) A dummy built in the shape of a female, may be covered in a hide and used to cause excitement in male animals

dumpy

a) Refers to an animal that is not feeling up to par but not infected with anything serious b) A short, stumpy looking animal

dun

An animal’s color; term refers to animals who are black in color or have a stripe over the shoulders of a dark color

dung

The feces of an animal; excrement or manure

dung locks

Locks of wool on a sheep that have been crusted over with dung

dunging pattern

Refers to an animal’s tendency to drop waste in certain areas

duodenum

The first part of the small intestine; can be found between the pylorus and the jejunum

dura mater

The outermost part of the meninges

dust

A type of fungicide or insecticide that is applied dry, as in regular dust

dusting

The manner in which chinchillas bathe; rolling in dust

dwarf

An animal who has not grown to its full potential, due to disease, deficiency, or otherwise

dyschezia

A condition characterized by difficulty with normal defectation

dyscrasia

A condition of the blood in which blood cells are abnormal

dysecdysis

Shedding differently or abnormally

dysentery

A condition characterized by intestinal trouble and inflammation

dysfunction

Not working like usual

dyspepsia

Difficulty with normal digestion

dysphagia

Condition in which eating and/or swallowing is difficult

dysplasia

A condition in which growth and development are not up to normal standards

dyspnea

Having a hard time breathing; breathing takes great pains

dysrhythmia

A condition in which normal heart rhythms are not apparent; also referred to as arrhythmia

dystocia

Difficulty giving birth

dystrophy

A condition in which a muscle or body part grows defectively

dysuria

Having a hard time urinating; pain while urinating