Test Questions Flashcards
Which one of the following is the largest dairy milk marketing cooperative in the US?
Dairy Farmers of America
On the PDCA Dairy Cow Score Card, the category “feet and legs” accounts for how many points?
15
When comparing bulls for artificial insemination, what does “SCR”stand for?
Sire Conception Rate
Which of the following is not classified as a water-soluble vitamin?
Vitamin A
When using sexed semen, conception rates are about what percent of the conception rates achieved when using unsexed semen under the same conditions?
80%
In the ruminant digestive system, which of the following is the name of the first section of the small intestine that is connecting to the abomasum?
Duodenum
Research has shown that by formulating lactating cow rations with proper amounts of certain amino acids, we can decrease the crude protein content of the ration and reduce which of the following?
Nitrogen excretion to the environment
In order to prevent bloat, the feed additive Poloxalene is often added to feed rations for cows that are grazing. Which of the following forages are most likely to cause bloat?
Alfalfa and Clover
Rumen bacteria enable dairy cattle to utilize which feed supplement?
Urea
Heritability for milk production in dairy cattle is:
30%
If the heat detection rate is 30% and the conception rate is 30%, the pregnancy rate is:
9%
Which of the following are the three primary volatile fatty acids (VFAs) produced in the rumen?
Acetate, propionate, butyrate
Which of the following is an infectious disease?
Ringworm
What female hormone causes follicles to begin development?
Follicle stimulating hormone
In dairy cows, what is the name of the disease caused by the organisms Staph, Aureus, Strep, Uberis and Klebisella?
Mastitis
What stomach compartments are not developed in a newborn calf?
Rumen and reticulum
When compared to normal corn silage, brown mid-rib corn silage has more energy and higher digestibility. This is largely due to its lower content of what?
Lignin
Which of the following describes Biotin?
A B-vitamin
Material used in a footbath for cows with foot rot problems is:
Copper sulfate
Approximately how many gallons of blood pass through the udder for each gallon of milk produced?
400 to 500 gallons
Subcutaneous injections are placed:
Under the skin
Which of the following dairy products uses bacteria cultures?
All of these
Which of the following has the greatest impact on improving producer income?
Decreasing SCC
What class of nutrients are the highest in energy?
Fats
The normal lactation of dairy cows is how many days?
305
What direction should calf hutches face in the winter?
South
Milking time is best reduced by:
Preparing cows properly
How many hours does the egg have a fertile life after it is released before it must be fertilized?
6-10 hours
Generally, which group of animals on the farm will have the best genetics?
Calves
Which of the following describes the Cooperatives Working Together (CWT) program?
A national dairy farmer-funded program that is used to help stabilize milk prices
Which dairy product’s minimum fat percentage is 80%?
Butter
Which one of the following components of the corn plant is not digestible by the dairy cow?
Lignin
Which of the following is the name of the term for a farms unique identification number that is a part of the National Animal Identification System?
Premises ID
Which of these breeds is from the English Channel Islands and known for producing milk highest in protein and fat?
Jersey
Which compartment of the ruminant stomach functions in a similar manner as the human stomach?
Abomasum
The Pasteurized Milk Ordinance is the rule book for?
Producers who sell Grade A milk
Which of these breeds is know for producing golden-colored milk?
Guernsey
Sexed semen is best used on virgin heifers. How many times should you breed them with it before trying something else?
Once
Milk used for butter production would be classified as what?
Class IV
What major category on the current PDCA Unified Dairy Scorecard contains breed characteristics?
Frame
Beginning in 2007, USDA published bull proofs how many times per year?
3
Phenotype is defined as the combined effects of genetics and what other component?
Environment
Injection site lesions and carcass bruises lower the value of cows at market and hurt cow prices. Ideally, were should intramuscular injections be given to prevent lesions?
In the neck or shoulder
Manure digesters produce what gas which can be converted into electricity?
Methane
How long after birth will calves absorb immunoglobins from colostrum?
24 hours
Which of the following describes acetate, propionate, butyrate?
Three primary fatty acids produced in the rumen
Which of the following is a B-vitamin?
Biotin
What percent of US dairies have more than 500 cows?
4.20%
Using a bull that has a good proof for productive life will probably not improve which of these traits?
Milk production
Ethanol fuel is produced from which of these crops?
Corn
What is the most common bacterium causing chronic mastitis?
Staphylococcus aureus
Cows excrete how many pounds of manure for every pounds of milk produced?
2
How many amino acids are considered to be essential in the dairy cow, an therefore are required in the diet?
10
Beef producers pay a one dollar per head check off for each beef animal sold at market. How much do dairy producers pay for each cull dairy cow that is sent to market?
1$
Which of the following is the name of the blister-like structure on the ovary that contains the egg before ovulation?
Follicle
What do we call the first streams of milk stripped from the udder prior to milking?
Foremilk
SPC is a measure of bacteria counts in milk. What do the letters in SPC stand for?
Standard plate count
During which one of the following times of the year is the consumer demand for dairy products typically the lowest?
Summer
Which of these is not a reason consumers buy organic milk?
Price
Calves need to be fed how much colostrum within their first 12 hours?
Four quarts
Which of these is an animal welfare challenge the dairy industry is facing?
All of these
What is the process called whereby fat globules are broken down to a small, uniform size?
Homogenization
When a herd develops a low milk fat test, the cause is often a deficiency of?
Effective fiber
Five hundred pounds of whole milk should yield about how many pounds of cheese?
50
In a newborn calf, which stomach compartment is the largest in size (as a percentage of the total stomach capacity)?
Abomasum
In 2005, which state had the highest milk production per cow?
Washington
On the PDCA Dairy Score Card, the category “udder” accounts for how many points?
40
Acidosis typically effects which part of a cows digestive system?
Rumen
You send a sample of corn silage from your trench silo to the lab for nutrient analysis. The report lists the dry matter o the silage at 30%. How many pounds of dry matter are in one ton (2000 lbs) of silage?
600
Dairy farmers fund the National Dairy Promotion & Research Board and other dairy product promotion through payments of how much per hundred weight of milk shipped?
$0.15
Dry matter is the amount of feed left after what is removed?
Water
