Livestock Reproduction

Front 1

Artificial insemination

Back 1

Implantation of live spermatoza into the genital tract of the female

Front 2

Calf Crop

Back 2

Number or percentage of calves produced within a herd in a give year divided by the number of cows and heifers exposed to breeding

Front 3

Cesarean Section

Back 3

Birth of a fetus accomplished by performing a surgical incision through the maternal abdomen and uterus

Front 4

Chorionic Ganadotropin

Back 4

Hormone that promotes secrection of progesterone by the corpus luteum

Front 5

Crossbreeding

Back 5

Hybridization

Front 6

Dystocia

Back 6

Abnormal or difficult birth

Front 7

Electroejaculation

Back 7

Device consisting of a rectal probe, a power control system, which gives stepwise control over the current applied, and a stimulator control, which permits variation within the steps

Front 8

Embryo Transfer

Back 8

Placement of an embryo into the uterus for implantation

Front 9

Estimated Progeny Differences (EPDs)

Back 9

Estimated breeding values give an estimate of the average transmitting ability of the parent

Front 10

Estrus Synchronization

Back 10

Parctice of using hormones to alter the reproductive cycle of females so that they all are in the same phase of estrus at the same time

Front 11

External Preputial Ring

Back 11

Rim of the external orifice of the prepuce proper, the internal prepuce, on the penis of the horse

Front 12

Fetotomy

Back 12

Dissection of a dead fetus in utero

Front 13

Flushing

Back 13

Nutritional practice of increasing a female's intake of protein and/or carbohydrates just before breeding, to improve ovulation and conception rate in ruminants and swine

Front 14

Genetics

Back 14

Science of heredity, dealing with resembalnces and differences of related organisms resulting from interaction of their genes and the environment

Front 15

Gomer

Back 15

Male that has been surgically prepared to ensure that it cannot mate or is not fertile

Front 16

Grade

Back 16

Animal without documentable lineage

Front 17

Grading up

Back 17

Animal of inferior breeding and quality is bred to one of much superior standing

Front 18

Hand Mating

Back 18

Mating in which the femal detected to be in estrus is handheld while she is mated or is let into a paddock or pen with a male, where she is the only female

Front 19

Heat Detection

Back 19

In most natural mating situations, the male is the best possible detector. For artifical or hand mating techquinces like tail paint, chin ball, siresine harnesses, or infertil teasers are used to detected famales in heat

Front 20

Heterosis

Back 20

Increased growth , size, fecundity, function, yield, or other characteristics in hybrids over those of the parents

Front 21

Inbreeding

Back 21

Breeding of closely related individuals

Front 22

Individual Breeding

Back 22

Mating of two animals, unobserved

Front 23

Linebreeding

Back 23

Form of inbreeding directed toward keeping the offspring closely related to a superior ancestor

Front 24

Live Cover

Back 24

Natural practice of a male naturally mating a female

Front 25

Lordosis

Back 25

Characteristic standing response seen in some animals during estrus

Front 26

Mutation

Back 26

In gentetics, a permanent transmissible change in the genetic material, usually in a single gene

Front 27

Outcrossing

Back 27

Practice of introducing unrelated genetic material into a breeding line

Front 28

Paraphimosis

Back 28

Inability to retract the penis back into the prepuce, usually due to excessive swelling of prepuce and/or penis

Front 29

Parturition

Back 29

Birth

Front 30

Pen Mating

Back 30

In species other than pigs, form of mating that is synoymous with hand mating

Front 31

Penile Paralysis

Back 31

Inability to retract the penis into the prepuce due to nerve or muscle disease

Front 32

Phimosis

Back 32

Inability to extend the penis from the prepuce, usually due to excessive swelling of the prepuce, which prevents the penis form exiting

Front 33

Priapism

Back 33

Prolonged erection unrelated to sexual desire, usually due to failure of the blood to exit the erectile tissue of the glans penis

Front 34

Purebreeding

Back 34

Mating two animals of the same breed

Front 35

Sheath

Back 35

Common term for prepuce

Front 36

Sidewinder

Back 36

Male that has been surgically prepared to ensure that it cannot mate or is not fertile

Front 37

Standing Heat

Back 37

Stage of estrus in which the cow stands to be mounted by other cows or by the bull

Front 38

Stillbirths

Back 38

Belivery of a dead neonate

Front 39

Superovulation

Back 39

Extraordinary acceleration of ovulation, producing a greater number of oocytes, usually as a result of administartation of exogenous gonadotropins

Front 40

Teaser

Back 40

Animal used to sexually teas but not to impregnate the members of the opposite sex

Front 41

Traction

Back 41

Act of drawing or exerting a pulling force, as along the long axis of a structure

Front 42

Vasectomized

Back 42

Having undergone removal of the ductus deferentes by surgical means