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Reproductive Terms
Reproductive and Genetic Terminology
Term | Definition |
---|---|
Abortion | premature expulsion of a fetus, either by nature or intent |
Afterbirth | placenta and fetal membranes expelled from uterus in parturtion |
Albino | genetic trait causing lack of pigment in the skin, hair, and irises of the eye |
Alter | to neuter a male animal or spay a female animal |
Artificial insemination | introduction of semen into the uterus by other than natural means |
Billy goat | male goat |
Bitch | female dog |
Boar | male pig |
Breed (n.) | group of related animals similar enough to produce similar offspring |
Breed (v.) | to supervise the sexual propagation of animals |
Brood | offspring from one hatching of a bird's eggs |
Broody | hen sitting on eggs |
Buck | male deer, goat, rabbit, or kangaroo |
Bull | male of various large mammals especially cattle |
Bullock | castrate bull or steer |
Calf | bovine younger than one year |
Capon | neutered rooster |
Castration | removal of the testicles; neutering a male animal |
Cesarean section | removal of unborn young by surgical incision into the uterus |
Chick | young bird, especially a chicken |
Chromosome | bodies within the cell nucleus that store genetic information |
Clutch | group of eggs laid at one time by a bird |
Cob | male swan |
Cock | male chicken older than one year |
Cockerel | male chicken younger than one year |
Colostrum | protein- and antibody-rich milk secreted by the mother after giving birth |
Colt | male horse before maturity |
Congenital | condition existing at birth but not hereditary |
Cow | female of various large animals, especially cattle |
Cygnet | young swan |
Dam | female parent |
Doe | adult female goat or dear |
Drake | male duck |
Duckling | young duck |
Embryo | undeveloped fetus; the young in an early stage of development |
Estrus | time of reproductive cycle when the female is receptive to mating |
Ewe | female sheep of breeding age |
Fertilization | union of the sperm and egg |
Fetus | unborn developing animal |
Filly | female horse under four years old |
Fledgling | young bird just learning to fly |
Foal | young or newborn horse |
Gander | male goose |
Gelding | neutered male horse |
Gene | part of chromosomes carrying hereditary information |
Genitalia | part of the reproductive anatomy |
Gestation period | time between conception and birth of an offspring |
Gilt | young female pig |
Gobbler | male turkey |
Gosling | young goose |
Gravid | pregnant; containing developing young |
Heat | estrus condition |
Heifer | young cow |
Hereditary | transmissible from parent to offspring; genetically determined |
Inguinal hernia | protusion of tissue through inguinal canals of males |
Jack | male donkey; jackass |
Jenny | female donkey |
Kid | young goat |
Kitten | young cat |
Lamb | young sheep |
Litter | several offspring from one birth, especially in mammals |
Mammary glands | glands of female mammals that secrete milk after parturition |
Mare | female horse four years or older |
Miscarriage | expulsion of underdeveloped fetus |
Monestrous | having one estrus period per year |
Mongrel | mixed-breed dog; a mutt |
Nanny goat | female goat |
Neonate | newborn animal |
Nest | structure made or place chosen for breeding or laying eggs |
Neuter | removal of the reproductive organs |
Nuptial plumage | brilliant mating-season plumage exhibited by some birds, usually males |
Oviparous | animals whose eggs develop outside the mother's body |
Ovovivparious | animals whose eggs develop within the mothers oviduct |
Parturition | process of giving birth |
Pen | female swan |
Piglet | young pig |
Placenta | organ within the gravid uterus, expelled after birthing |
Polyestrous | having more than one estrous period per year |
Pouch | fold of skin for carrying young on abdomen of female marsupial |
Pregnancy | condition in which offspring develop in the female uterus |
Prepuce | protective sheath covering the penis |
Pullet | female chicken younger than one year |
Pup | young dog or seal |
Queen | mature female cat used for breeding |
Ram | sexually mature male sheep |
Rooster | male chicken |
Shoat | pig under one year old |
Sire | male parent of any quadruped, especially a horse |
Sow | female pig |
Spay | to remove the ovaries and uterus; to neuter a female animal |
Squab | fledgling pigeon |
Stag | male deer |
Stallion | male horse |
Steer | Neutered bull |
Stud | male horse used for breeding |
Tom | male cat or turkey |
Umbilical cord | vessel connecting the fetus to the placenta |
Vagina | female passage for copulation and birthing |
Viviparous | giving birth to live young developed in the uterus |
Vixen | female fox |
Wether | neutered ram or billy goat |
Whelp (v.) | giving birth to, said especially of dogs |