AS101: Exam #3

The type of amino acids that are needed by the animal and that cannot be synthesized by the animal are:

Essential

Which of the following classses of nutrients are most likely to become toxic if consumed in excess

Minerals

Which of the following is NOT a product of rumen microbes that is utilized by the animal?

Fat soluble vitamins

A primary site for absorption of nutrients for all species is:

Small Intestine

Which of the following provides a more accurate indication of forage digestibility?

acid detergent fiber (ADF)

Where is the site of microbial fermentation in the digestive system of a horse?

Cecum

Which of the following is true regarding NPN?

NPN stands for non-protein nitrogen

When converting pounds of dry matter to pounds of "as-fed", the weight for as-fed should be greater.

True

When converting the percentage of a nutrient in "as-fed" feed to the percentage in dry matter, the nutrient concentration will increase (will be higher when expressed as a % of dry matter.)

True

TDN is a measure of:

Energy

In which livestock species do embryos develop along the entire length of the uterine horns?

Swine

In what female organ does fertilization occur?

Oviduct

The structure that keeps the uterus tightly sealed off from external contamination during most times is the:

Cervix

The primary purpose of the male accessory sex glands is to:

Add fluids and nutrients to semen

What are two major functions of the testes?

Production of sperm and testosterone

The number of females that can be bred from an ejaculate of semen

Is fairly high (100+) for species like cattle that have a low volume of semen with a high concentration of sperm per ejaculate

Scrotal circumference is used as a selection tool in cattle because:

1) It is a good indicator of age at puberty.

2) It is easy to measure.

3) It is an indicator of overall fertility of the male.

Estrus is:

The time period when the female will allow the male to mate her

The estrous cycle

1) Is the time period from one ovulation to the next

2) Is the time from one period of standing heat to the next

3) Includes development of a follicle, ovulation and development of a corpus luteum

In which species do embryos develop in the uterine body, not the horns?

Equine

Artificial insemination is used to the greatest extent in what kind of livestock?

Dairy Cattle

If a cow is observed in heat in the afternoon, it is recommended she be bred when?

The next morning

Estrus detection is more critical when which type of mating/breeding is used?

Artificial Insemination

When using AI, mares can be among the more difficult of the large animal species to achieve a successful conception with, because .

Mares have a more variable length of estrus, making it more difficult to know when ovulation has occurred.

Which of the following species produces a high volume of semen with a relatively low concentration of sperm per ejaculate, thus not as many females can be bred per ejaculate in this species as compared to other species.

Stallion

What are the advantages of embryo transfer?

Allows greater use of superior genetics on the female side

Concentration of labor during heat detection, breeding and calving are advantages of:

Estrus synchronization

Which of the following signs of estrus is common across all livestock species?

Standing to be mounted

On average, a cow (Bos taurus) will be in standing heat for how long?

18 hours

The process of exposing the mare to the stallion and observing for signs of heat is commonly known as:

Teasing