AVS 1112 - Goats and Sheep Quiz #5

Ewe

female sheep over 1 year of age

Ram

intact male sheep over 1 year of age

Wether

castrated male sheep

Lamb

sheep under 1 year of age

Ram Lamb

male under 1 year of age

Ewe Lamb

female under 1 year of age

Flock

group of sheep

Doe or nanny

female goat over 1 year of age

Buck or billy

intact male goat over 1 year of age

Wether

castrated male goat

Kid

goat under 1 year of age

Buckling

baby male goat

Doeling

baby female goat

Herd, flock, or trip

group of goats

Butting

a method of fighting among goats by the goats striking each other's head and horns

Rambouillet

Hampshire

Suffolk

Dorset

Dorper

La mancha

Gopher (less than 1 inch) ears or elf (about 2 inches) ears

Nubian

Toggenburg

Angora

Nigerian dwarf

Boer

Myotonic

Have myotonia congenita

Sheep dominant traits

hairy fleece, white wool, brown eyes, normal leg length

Sheep recessive traits

wooly fleece, black wool, blue eyes, short leg length

Goat dominant traits

white hair, red boer, blue eyes, polled, wattles

Goat recessive traits

colored hair, black boer, brown eyes, horned, myotonia

Shape of ovary in both

almond-shaped

What occurs during ovulation?

the egg is released into the oviduct where fertilization will occur, but the embryo remains in the oviduct for about 3-6 days until moving to the uterus

What type of uterus do they have?

a bicornuate uterus, but they have less developed uterine horns like the cow

What is attached to the uterus?

the cervix, which is closed tight except for during estrus and calving

External portion of the female reproductive tract includes:

the vestibule and vulva, whereas the vagina is the breeding organ

What are the testicles responsible for?

the production of sperm and testosterone

Where do the testicles develop and descend?

the testicles develop in the abdomen and descend into the scrotum

What is uncommon in males?

cryptorchidism, where one or both testicles do not descend into the scrotum

Type of penis

fibroelastic with a sigmoid flexure

Ram and buck have a unique what?

glans penis, or tip of the penis, because it has a filiform urethral process

Puberty reached

5-8 mo of age

How long is the estrous cycle?

14-19 days for sheep, 18-24 for goats

What kind of breeders are they?

short day breeders, meaning their normal breeding season is from August to December

Estrous cycle in females, what are they called?

seasonally polyestrous, meaning they have many estrous cycles throughout the year

Gestation period:

143-152 days, or 5 months

How to manipulate their reproductive cycle?

1. melatonin application

2. light control (gradual reduction of light)

3. ram effect or buck effect (exposed to male pheromones to bring them into estrous earlier)

Process of giving birth

lambing and kidding

Three stages of lambing and kidding

1. dilation of cervix and contractions

2. expulsion of lamb or kid

3. expulsion of the placenta

What is rare in sheep and goats?

freemartin, (1%) where the lamb or kids share a placenta or if a female has multiple male siblings

Multiparous

produce singles, twins, and triplets, twins are most common

record born to doe and ewe

doe - nigerian dwarf - 7

ewe - texel - 7

IVF

the collection of eggs directly from the ovary before the follicles have fully developed. The eggs are then fertilized (in a test tube or environment outside the body) and allowed to develop to the stage appropriate for placement into recipients

Vaginal AI

depositing semen into vagina

Cervical AI

semen is deposited into the first fold of the cervix

- common

Trans-cervical AI

semen is deposited into the uterus using a tube passed through the cervix

Laprascopic AI

semen is deposited into the uterine horns intraabdominally

Wool

the fiber that grows instead of hair on sheep

Chamois or chammy

leather made from sheep or goat skin

Cashmere

soft undercoat of goats

Chevre

goat cheese

Feta and ricotta

types of sheep cheese

Lamb

meat from sheep under 1 year of age

Mutton

meat from sheep older than 1 year of age

Cabrito or capretto

meat from goats under 1 year of age

Chevon

meat from goats older than 1 year of age

Containment

sheep - easier to contain thru fencing

goats - harder to contain thru fencing

Polled or horned

sheep - usually polled

goats - usually horned

Climates

sheep - better adapted to adverse climate

goats - less adapted to adverse climate

Handling

sheep - easier to handle

goats - curious and intelligent

Growth rate

sheep - fast growth rate

goats - slower growth rate

Tail position

sheep - tail hangs down

goats - tail goes up