CDE Test 2 Flashcards
Hormones are organic catalyst that influence the growth and development of the body and are produced in the:
endocrine system
In what part of the respiratory system are the passages from the nostrils and the mouth joined?
pharynx
The pancreas produces which hormone?
insulin
What major mineral is often lacking in animal rations?
calcium
The proportion of the total variation is offspring from parents due to additive gene effects:
heritability
Which trait in beef cattle has the highest heritability estimate?
ribeye area
Which trait in sheep has the lowest heritability estimate
fee efficiency
The diploid number (pairs of chromosomes) for sheep is:
27
Which gland in the male produces the sperm cells?
testicles
The average age for cattle to reach puberty is:
6-8 months
The average length of the estrus cycle in swine is:
21 days
The release of the egg from the ovary is called:
ovulation
Which region of the United States produces the most beef cattle?
Southwest
Which breed of cattle is classified as a Bos indicus type?
Braham
What is the standard number of days that beef cattle weaning weights are adjusted to?
205
The normal average bod temperature for healthy beef cattle is:
101.5 degrees F
What is the length of time that bacteria causing Anthrax can remain in the soils?
40 years
Pinkeye, the common name of this disease, is carried by insects and affects the eyes of the animal:
Infectious Keratitis
Which nutritional disease is a hear condition of beef cattle at high altitudes?
Brisket Disease
White Muscle disease is caused by deficiency of the trace element:
selenium
Which breed of swine is known to produce the largest loin muscle area based on performance tests?
Hampshire
What term refers to the degree of refinement of head, hair, hide, and bone of the live hog?
quality
Since 1970, which breed of sheep has the largest number registered with their breed association:
Suffolk
Which fine wool breed of sheep originated in the United States?
Debouillet
The backfat on a market lamb should measure _______ at the 12th rib.
0.15 to 0.20 inches
A lack of what substance in the blood causes milk fever in sheep?
calcium
What type of parasites are the most serious health problem for sheep?
internal
To ________ is to adapt the behavior of an animal to fit the needs of people.
domesticate
What two wild stocks did American breeds of swine come from?
Sus vittitus & Sus scrofa
Timid, defenseless, and the least intelligent of all tamed livestock, these were thought to be the first wild species domesticated.
sheep
Livestock belong to what class of homoeothermic animals that are characterized as having four chambered hearts, mammary glands, and have young born alive?
mammalia
All the domestic animals found on the farm are included in what kingdom?
Animalia
In the subdivision Pecora of the suborder Ruminantia, are considered “true ruminants” because they have what unique characteristic?
Stomachs with four compartments
What does the rumen of a cow contain that allows it to effectively digest low quality feedstuffs?
Microorganisms
What percentage of total beef and dairy energy intake in the U.S. consists of roughages and other waste materials that can’t be used for human food?
About 75%
Which of the following is not a carcass byproduct of slaughter animals? A. wool B. meat c. leather d. mohair
B. meat
