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Dairy Quiz Bowl 2024 > Reproduction Definitions > Flashcards

Reproduction Definitions Flashcards

1
Q

Premature expulsion of a fetus

A

Abortion

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2
Q

Failure to have an estrous cycle

A

Anestrus

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3
Q

Situation that exists when cows are not ovulating

A

Anovulation

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4
Q

Process of freezing semen from a bull and thawing it later to fertilize ova

A

Artificial Insemination (AI)

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5
Q

Period from one calving to the next calving, usually measured in months

A

Calving Interval

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6
Q

Physiological changes that occur to sperm membranes which are essential to attainment of fertilization potential

A

capacitation

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7
Q

Uterine side of the placental attachment points

A

Caruncle

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8
Q

Permanent injury to the supreme caused by a sudden decrease in semen temperature after thawing

A

Cold Shock

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9
Q

Percent of services (breedings) that result in a pregnancy

A

Conception Rate

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10
Q

Temporary gland that forms on the ovary after the ovum is released; also called yellow body

A

Corpus Luteum

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11
Q

Placental side of the placental attachment points

A

Cotyledon

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12
Q

Condition when one or both testes fail to descend from the abdomen into the scrotum, often affecting fertility

A

Cryptorchidism

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13
Q

Days from calving until conception or successful breeding date

A

Days Open

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14
Q

Days from calving until first breeding date

A

Days to First Service

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15
Q

Process of removing a fertilized ovum from a donor cow and transferring it to another cow or heifer; Most embryo transfers are conducted on day 7 or 8 after breeding

A

Embryo Transfer

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16
Q

inflammation of the uterine lining

A

Endometritis

17
Q

period of heat in dairy cattle

A

Estrus

18
Q

process of joining and ovum and a sperm. It takes place in the oviduct

A

Fertilization

19
Q

Sterile heifer born twin to a bull

A

Freemartin

20
Q

Thin cylinder in which frozen semen is preserved

A

French Straw

21
Q

Period of pregnancy; it begins at fertilization and ends at birth

A

Gestation

22
Q

Number of animals bred divided by the number of animals eligible for breeding, typically each 21-day cycle

A

Heat Detection Rate

23
Q

Describes the animal that is neither normally fertile nor totally sterile

A

Infertility

24
Q

Process where the uterus returns to normal size after calving

A

Involution

25
Q

Infection of the uterus

A

Metritis

26
Q

Process of releasing an ovum from the follicle on the ovary

A

Ovulation

27
Q

Act of giving birth (also called calving, freshing)

A

Parturition

28
Q

Percent of cows that become pregnant out of those cows eligible to become pregnant in a period, usually 21 days

A

Pregnancy Rate (PR)

29
Q

An animal that received a fertilized ovum from a donor

A

Recipient

30
Q

Condition when the fetal membranes remain attached to the maternal Caruncles within the uterus for an extended period after calving (greater than 24 hours)

A

Retained Placenta

31
Q

Proportion of cows eligible for service in a set period (usually every 21-day period) that are bred

A

Service Rate

32
Q

An evaluation of artificial insemination (AI) service-sire fertility computed
by the Council on Dairy Cattle Breeding; calculated for Ayrshire, Brown Swiss, Guernsey, Holstein,
Jersey, and Milking Shorthorn bulls

A

Sire Conception Rate (SCR)

33
Q

Describes the animal that cannot reproduce

A

Sterility

34
Q

Process that involves treating a cow with a hormone (FSH) to increase the number of ova produced

A

Superovulation

35
Q

Use of ultrasonography to view the ovary while removing oocytes
through the vagina using a needle; harvested oocytes are matured and fertilized in vitro

A

Transvaginal Aspiration

36
Q

Time period after calving when the dairy producer chooses not to
breed a cow; most common VWP is 60 days

A

Voluntary Waiting Period (VWP)

37
Q

A fertilized ovum

A

Zygote

Dairy Quiz Bowl 2024 (3 decks)

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