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