Estrus Detection and Artificial Insemination Flashcards Preview

CTC Junior Vet science > Estrus Detection and Artificial Insemination > Flashcards

Flashcards in Estrus Detection and Artificial Insemination Deck (16):
1

Natural Insemination

Deposition of semen by male into reproductive tract of a receptive female under normal body conditions

2

Artificial Insemination

Deliberate introduction of semen into a female for purpose of fertilization by means other than ejaculation directly into the vagina

3

Capacitation

Change undergone by sperm in female reproductive tract enables them to penetrate and fertilize an egg

4

Ways to detect estrus

Visual
Teaser animals
Marker aids

5

Visual estrus detection

30 minutes in morning and evening
Swollen vulva
Mucus
Standing to be mounted
Mounting other animals

6

Teaser animal estrus detection

Surgically altered (vasectomized / Gomer bull)
Androgenized cows/steers

7

Marker aid estrus detection

Chin ball marker
Heat- mount detectors
Chalk/paint tail head

8

Advantages of Artificial Insemination

Genetic improvement through increased use of superior sires
Disease control
Eliminates need for keeping bulls
Improving record keeping

9

Disadvantages of Artificial Insemination

Time required to detect estrus
Percent of cows in estrus during breeding season
Trained personnel required
Over use of inferior bulls

10

Major Steps of AI

Collect sperm for the male
Preserve and extend sperm
Insemination of the female

11

Ways to collect semen

Artificial vagina
Electro ejaculation

12

Artificial vagina

Device that simulates vaginal conditions of a female in estrus

13

Electro Ejaculation

Electrical stimulation of the accessory sex glands and pelvic urethra resulting in ejaculation

14

When is electro ejaculation used

in males of high genetic value that cannot physically perform mounting and ejaculation

15

Extender

Solution in which spermatozoa are diluted and extends number of sperm and function

16

Good seminal extenders must

Minimum cold damage
Provide nutrients
prevent microbial growth
maintain viability
low in cost