Animal Science Lab Exam 1 (final)

What is a group of sheep called

flock

What is the adjective for a sheep

Ovine

What is the genus and species of a sheep

Ovis Aries

What is the act of parturition of a sheep

Lambing

What is the general term for a sheep

Lamb

What is a young male sheep called

Ram lamb

What is a young female sheep called

Ewe lamb

What is a mature male sheep called

Ram

What is mature female sheep called

Ewe

What is a castrated male sheep called

Wether

What state has the most sheep

Texas

What are some uses for sheep whool

Can absorb moister
Fire resistance
Shrink when wet
Can be itchy

Wool shorn at one time from all parts of the sheep

Fleece

The length of the wool fibers

Staple length

The diameter of wool fibers

Fineness

How many yards of yarn are in a hank and what does it measure

560 yards, fineness

Waves or kinks in the wool fiber

Crimp

What is the class and grades for sheep

Class: staple length, Grade: fineness

Difference between an open face and close face sheep

Open: wool does not grow around the eyes, Closed: wool does grow around the eyes

What is a farm flock

In the Midwest and west coast, usually more lambs per ewe

What is a range flock

Western states, range lands, have predators

What is the meat at finish

Finish 90-120 days weighing 120-130

Lamb vs mutton

Lamb under 1 year of age and has a break joint, Mutton over 1 year of age and has a spool joint

When is breeding season for sheep

Mainly in fall

When does a sheep reach maturity

5 months

What can higher temperatures cause in rams

Heat sterility

What is the adjective for a cow

Bovine

What is the genus and species of a cow

Bos Taurus or Bos Indicus

What is the act of parturition in cows

Calving

What is the general term for young

Calf

What is a young male cow called

Bull

What is a you female cow called

Heifer

What is a mature male cow called

Bull

What is mature female cow called

Cow

What is castrated male cow called

Steer

A group of organisms having common ancestors and certain distinguishable characteristics

Breed

Sire traits vs Dam traits

Sire: Paternal- growth, size, and muscling
Dam: Maternal- raising healthy of spring, ex: fertility, milk production, calving ease, care

Types of cattle- Bos Taurus

Developed to perform in temperature climates, from Great Britain's and Western Europe, mostly for beef or milk production

Types of cattle- Bos Indicus

Developed to perform in hot, tropical climates, primarily India and Southeast Asia, selected for draft power and beef

Originated in Scotland, black in color with a recessive red, pulled, most popular beef breed, high carcass qualityadd marbling quickly, highe fertility, milk production, highly desirable cross breeding, slightly nervous, not overly cold tolerant but not d

Angus

Originated in US, same characteristics as Angus, red in color

Red Anus

Originated in England, red body white extremities, horned, do well in open range, hardy in cold, excellent libido, high fertility, good disposition, low milk production, some udder problems, do not marble well

Hereford

Originated in the United States, same genetics as Hereford, pulled, larger frame but less muscling than Hereford, tend to have pendulous sheath

Pulled Hereford

Originated in England, red roan or white, horned or pulled, utility type, first popular breed in US but declining, easy calving, good disposition, moderate size, good cross for other breed, patchy fat deposition, light muscling, poor quality

Shorthorn

Example: Angus X Hereford, results in a calf with a black body and white face, terminal cross market, black baldy or Brockle face

Commercial Crossbred Cattle

Developed in continental Europe, mature later, heavy muscle, lower fertility, increased calving problems, less marbling, used as sire/ paternal breeding

Exotic/ Continental breeds

Originated in France, creamy white in color, horned or pulled, one of the first exotic breeds introduced in the United States, heavy muscling, rapid growth, yield, low fertility, low milk, calving difficulty

Charolais

Originated in Switzerland, yellow to red to white, predominately horned, triple purpose breed, high milk production, rapid growth rate, calving difficulties, nutrition related fertility problems

Simmental

Originated on France, golden yellow, horned or pulled, most popular exotic breed in US, Highest yield, easy calving, good as sire or dam, slow average Dailey gain, nervous, small scrotal circumference

Limousin

Originated in Austria and west Germany, yellow to golden red, horned or pulled, rapid growth, good carcass characteristics, good maternal traits, genes compliment other breed, calving difficulty, thick front end

Gelbvieh

Brahman and Brahman crosses, desirable characteristics: heat tolerant, parasite tolerant, crosses with British and exotic breeds produce high heterosis, Undesirable: nervous, tough meat, pendulous sheath, not adaptable to cold

Bos Indicus

Originated in India and Southeast Asia, white gray, horned, droopy ears, loose skin, deep sheath, several breed variants, easy calving, good dam, highest butterfat corn=tent of any breed, low fertility, slow growth, light muscling

Brahman

Originated in the United States ( King Ranch in Texas), red, horned or pulled, 5/8 shorthorn and 3/8 Brahman, first breed developed inUS, Nicknamed Gerts, rapid growth, good milk production, work well as sire or dam breed, low fertility, lack if muscle

Santa Gertrudis

Originated in the US, black, polled, 5/8 angus, 3/8 Brahman, good milk production, high fertility, primarily and dam breed

Brangus

What state base the most cattle

Texas

What rank is Alabama for the cattle

15

Operations where animals are bred and raised for slaughter

Commercial

Operator raises calf from birth to weaning (6-10 months of age)

Cow- Calf

Weaning to 600- 850, primarily on a roughage diet

Stocker- yearling

High energy feed to finish ar=t a slaughter weight and degree of finish

Feedlot

Similar to cow- calf, but primarily sell bulls to commercial producers or other purebred producers, may sell semen for A.I. Purposes

Purebred or seedstock

What are some economically important traits

Reproductive performances, weaning weight, feed efficiency, longevity, conformation, freedom from genetic defects , carcass merit

Trait of highest economic importance, reproductive traits have low heritability, birth weight and scrotal circumstance are highly heritable

Reproductive Performance

What do you need to do to improve reproductive performance

Improve environment, select bulls on breeding soundness, use bulls with light birth weight, use bulls with large scrotal circumference

Reflects the milking and mothering ability of the cow and the preweaning growth rate of the calf

Weaning weight

Growth is from weaning to finish weight

Postwening

Is pounds of feed required for one pound of gain

FE

Is measured by quality and yield grades

Carcass merit

Measures the length of productive life

Longevity

Is the form, shape, and visual appearance of an animal

Conformation

What does EPD stand for

Expected progeny differences

What is EPD used for

Used by breed associations to monitor individual performance or offspring performance

How do you select replacement heifers

Conceive early, calve easily, give a flow of milk supply consistent with feed supply, wean heavy calves

What is heterosis

Performance of offspring is greater than the average parents

What does it mean when cattle are ruminants

Stomach has 4 compartments

In cow calf management how do producers analyze the criteria

Calf crop percentage weaned, average weight of calves at weaning, annual cow cost

What do you do to manage for optimum weaning weight

Calves that are born earlier in season are heavier, amount of forage available, use of Roth stimulants to nursing calves, creep feed calves, genetic selection for good milk production, cross breeding

Dairy cattle: Holland/ Netherlands, feminine qualities, black and white markings, most popular of all dairy breeds because they tend to produce more milk than other breeds

Holstein

How many lactation does an average friesian cow have in their life time

3.2

US/ Canada, feline qualities, red and white marking, heat tolerant, strong immune system, darker hooves

Red and White Holstein

Isle of jersey in the English Channel, some shade of fawn with or without white marking, muzzle is black encircled by a light colored ring, switch may be either black or white, second most popular breed

Jersey

Scotland, strong and robust, light to deep cherry red, mahogany, brown, or any combination of these with white, very hardy

Ayshire

Switzerland, body and switch solid brown varying light to dark, muzzle has black nose encircled by a white ring, large furry ears, milk has longer-chain fatty acids and smaller fat globules which means the cream rises much more slowly and ideal for cheese

Brown Swiss

Isle of guernsey in the English Channel of the cost of France, shade of fawn and white markings, also known as the royal breed because of there golden hue in their milk which has rich flavor

Guernsey

Northern eastern England, red or white or any combination but not black, known for having the shortest calving interval of any breed- 12.8 months

Milking shorthorn

Is an evaluation process for longevity

Dairy Judging

How many years does it take for a cow to produce enough milk to cover the cost of raising her to this point of her life

1.75

When was the Purebred Dairy Cattle Association (PDCA)

1943