Animal Science 2 Exam Review #3

The rule of thumb is that a poultry ration is about

10 percent of body weight

Data on feed composition calculated on the basis of all moisture removed from the feed is

100 percent dry matter basis

Accurate heat detection in cows is important because the average length of heat or estrus is about

16 - 18 hours

Using the Pearson Square method, how many pounds of 10 percent protein corn and 45.2 percent protein cotton seed meal would be mixed together 2000 pounds of a 15 percent protein feed

1716 corn and 284 cotton seed meal

Using the Pearson Square method, how many pounds of 8.9 percent protein corn and 45.8 percent protein soybean oil meal would be mixed together to make 2000 pounds of a 14 percent protein feed

1724 corn and 276 soybean oil meal

Using the Pearson Square method, how many pounds of 8.9 percent protein corn and 45.8 percent protein soybean oil meal would be mixed together to make 2000 pounds of a 13 percent protein feed

1778 corn and 222 soybean meal

The birthing process begins when the increased estrogen causes the muscles to contract in the

Uterus

The 100 percent dry matter basis of sun-cured hay compared to the as-fed basis is about

90

Which type of feed additive should be used to control worms in beef cattle or swine

Anthelmintics

Data on feed composition calculated on the basis of the average amount of moisture in the feed as it is used on the farm is

As-fed basis

Which is an antibiotic feed additive for swine

Aureomycin

Great care should be taken to clean all medicated feed from the feed mixer to

Avoid drug contamination

Ovulation is necessary for the animal to

Become pregnant

A major cause of improperly placed hormone implants is

Being in too much of a hurry

The feed additive that should be selected for use when there is no specific known disease is

Broad-spectrum antibiotics

Withdrawing the hormone implant needle too rapidly can result in

Crushed hormone pellets

In hormone implants, a dull or bent needle can cause

Crushed pellets

What stage of parturition involves the actual birth of the fetus

Expulsion

Marbling in beef is an example of this feed nutrient function

Fattening

The major problem that most people have with the use of biotechnology in animal production is

Fear of the unknown

In addition to implanting, hormones can be given to animals as

Feed additives

Which reproductive process requires that an animal be bred at the correct time so that the egg cell ad live sperm will be present at the same time

Fertilization

A ration can have all the nutrients the animal needs in the correct quantities and proportions and still be a poor ration unless it is

Palatable

Which rule summarizes many of the rules and procedures for properly mixing medicated feeds

Read and follow the label

To prevent coccidiosis, coccidiostats are included as feed additives for

Poultry

When beef cattle are put on spring pasture grass or are fed grain, Poloxaline can be used to

Prevent bloat

The ration function that includes making milk and eggs is

Production

If no sperm are present during ovulation, prostaglandin stops the production of which hormone

Progesterone

Which hormone is primarily responsible for maintaining pregnancy in animals

Progesterone

Which general principle of balancing a ration most affects the functioning of the digestive system and satisfies hunger

The ration must contain dry matter or bulk

Which general principle of balancing a ration considers the price per pound of energy and digestible protein

The ration should be economical

Which general principle of balancing a ration most affects whether the animal will eat the feed

The ration should be palatable

Which general principle of balancing a ration makes it easier to balance nutrients

The ration should contain a variety of feeds

Being bulky and succulent and containing a variety of feeds are general principles of a good ration that also affect whether the ration is

palatable

Materials that are put in animal rations in small amounts to improve feed efficiency, promote faster gains, improve health or increases production of animal products are

feed additives

Genetically engineered bovine somatotrophin (bst) given to dairy cattle

increased milk production

The hormone implanting instrument should be pointed toward the animals's

Head

Molding or heating may occur if feed materials are stored at

High moisture content

The rule of thumb for feeding swine is that compared to market hogs, pigs weighing less than 50 pounds and sows that are nursing pigs require

Higher percent protein

Organic materials inserted under the skin of a beef animals ear to improve performance are

Hormone implants

The genetics of cloned animals are

Identical

An advantage of using artificial insemination compared to natural breeding for beef cattle is that

A wider variety of superior bulls can be used

The 100 percent dry matter basis of most fresh pasture grasses compared to the as-fed basis is about

20 - 30 percent

The average length of the estrus cycle for both cattle and swine is

21 days

An area of biotechnology that uses monoclonal antibodies to improve animal health by increasing accuracy and reducing time is

Diagnostic testing

Using the Pearson Square method, how many parts of 8.9 percent protein corn would be mixed with 6.1 parts of 45.8 percent protein soybean oil meal to make a 15 percent protein ration

30.8

Using the Pearson Square method, how many parts of 45.8 percent protein soybean oil meal would be mixed with 32.8 parts of 8.9 percent protein to make 13 percent ration

4.1

Using the Pearson Square method, how many parts of 8.9 percent protein corn and 45.8 percent protein soybean oil meal are needed to make a 14 percent protein ration

5.1 parts soybean oil mean and 31.8 parts corn

A ration that has all the nutrients the animal needs in the right proportions and amounts is a

Balanced ration

The placenta and other membranes that are expelled by the mother after the baby animal is born and will cause the mother to become sick if not expelled is called the

Afterbirth

The best indication that a cow is in standing heat and is ready to be bred is

Allowing other cows to mount

When a beef cow is artificially inseminated, a gloved hand is inserted into the animal's rectum to guide the inseminating rod through the

Cervix

The biotechnology activity that can most rapidly increase the uniformity of cattle in a herd is

Cloning

Corn and other grains are classified as

Concentrates

A major advantage of embryo transfer is that it speeds the genetic improvement of a herd of beef cattle from the

Dam

One of the major questions that should be asked to decide ethical issues in biotechnology use is

Does it hurt anyone

The technology that opened the door for biotechnology to be used in animal reproduction is

Embryo Transfer

Removing a nucleus from an embryo before the embryo is implanted in the uterus wall and placing the nucleus into a mature, unfertilized egg cell is nuclear transfer or

Embryo cloning

Which hormone is primally responsible for a cow signs of heat

Estrogen

In embryo transfer, the embryos are removed from the female donor by a process called

Flushing

What structure located on the ovary is the sight where ova develop

Follicle

If an animal ovulates only one egg, there will be only one baby animal born unless there are

Fraternal twins

In beef cattle, the normal position of a calf at birth is

Front feet first

One of the major advantages of embryo cloning is

Genetically uniform offspring

Uniformly mixing additives in livestock feed is necessary for all animals to

Get the correct amount

The primary reason for using feed additives and hormones in livestock is to

Increase profits

The needle and the implantation site on the animal's ear should be cleaned with alcohol to prevent

Infections

Genetically engineered bovine somatotrophin (bst) given to beef cattle results in

Leaner meat and the weight increases

When compared to as-fed basis, the weight of 100 percent dry matter basis will be

Less

Hitting a vein when implanting hormones can result in

Loss of implant

Since feed costs make up about 75 percent of the total cost of raising livestock, rations should be the highest quality possible at

Low cost

From one - third to one half of the ration fed to livestock is used for

Maintenance

The Federal Food and Drug Administration (FDA) requires any feed with any drug in it to be labeled as a

Medicated feed

The first general principle of balancing rations is that the ration should

Meet the nutritional needs

Which feed additive will suppress estrus heifers

Melengestrol (MGA)

On beef cattle, the hormone implanting location is on the backside of the ear in the

Middle one-third of the ear

Brucellosis testing, pregnancy diagnosis testing and treating scours are applications of

Monoclonal antibody technolgy

The rule of thumb for feeding for fattening is less than two pounds of air-dried roughage and two pounds of concentrates

Per 100 pounds of body weight

Feed additives and hormone transplants are

Performance stimulants

Even if specific evidence totally supports a specific use of biotechnology, the ethical issues may cause problems in the approval for use because of

Personal beliefs and values

The greatest economic return from the use of antibiotics in swine feeds is from

Pigs

A major health concern of using antibiotics at low levels in livestock feed is that disease - causing microoganisms may become

Resistant

Hay, silage and pasture grasses are classified as

Roughages

Which class of feeds has the highest percent of fiber

Roughages

Placing the hormone implant in the ear cartilage may cause encapsulation resulting in

Slower-than-normal absorption

Using antibiotics and antibacterials at a lower level than would be used to treat sick animals is

Subtherapeutic Use

Care should be taken to prevent crushing hormone transplant pellets because crushed pellets may result in

Too rapid absorption