1-50 Flashcards
Which one of the following is the largest dairy milk marketing cooperative in the U.S.?
Dairy Farmers of America (DFA)
Hairy Heel Wart is scientifically known as what?
Digital Dermatitis
New computerized robotic milk stations are becoming a reality today. They have different names but one common one is MOD system. MOD means:
Milk on Demand
On average, how many weeks after freshening does a cow’s dry matter intake peak?
12-14 weeks
All milking equipment must be sanitized:
After each use
Why is fat added to dairy rations?
To add a concentrated form of energy
The annual sale of dairy semen exceeds_________straws.
20,000,000
What is the average production lifetime of a dairy cow?
3 years
A cow’s gestation period is_________long?
282 days
When can a heifer calf born twin to a bull be registered?
When it is proven that she will breed
The letters FSIS stand for what?
Food Safety and Inspection Service
In a sire’s proof, daughters’ calving ease measures ____________.
The influence of the sire of the cow on calving ease
98% of somatic cells are:
Leukocytes
Corn silage stored in sealed upright silos should ensiled at what moisture?
No less than 60% moisture
Which mineral functions in maintaining osmotic pressure, acid-base balance, and body fluid balance?
Sodium
A disease transmitted through natural mating which causes abortion, low conception rates, and irregular heat cycle is ___________.
Vibriosis
Coccidia infection can occur when calves are 4-8 weeks old. Coccidia causes:
Enteritis
In the standard protocol for cleaning milking equipment, which of the following is not one of the four phases of cleaning?
Back flushing
When evaluating a dairy ration, what do the letters TDN stand for?
Total Digestible Nutrients
Most dairies in Texas are considered to be CAFO’s. A CAFO is:
Concentrated Animal Feeding Operations
Abortion in the last trimester of pregnancy is often caused by________.
Brucellosis
Dairy herds have historically used artificial insemination. Currently approximately _________% of all dairy pregnancies results from A.I.
85
If you add sugar to a milk product, you must________the minimum pasteurization temperature by ____ Fahrenheit.
Increase, 5
Cows produce pheromones which:
Attract the opposite sex
Dairy producers are particularly watchful for zoonotic diseases in their heard. Zoonotic diseases are defined as those that:
Pass from animals to human and vice versa
When using sexual semen, conception rates________% of the conception rates achieved when using unsexed semen under the same conditions?
50-80%
Jersey cattle are characterized by having a ________ face:
Dished face
Which trait is worth the most points according to the Dairy Cow Unified Score Card?
Udder
In the reproductive tract of a dairy cow, how many uterine horns are there?
Two
What is the scientific term for birth?
Parturition
Crude fiber in a dietary ration must be at least _________% or milk fat percent will decrease.
18
Which system of the cow’s body is most affected by paratuberculosis?
Digestive
Dairy cows produce milk that is relatively high in B complex vitamins. Because they are ruminants:
It is not necessary to supplement the intake of Vitamin B complex
How many grams of lactose are in an 8oz. glass of milk?
10
How many chromosomes does the nucleus of each reproductive cell have in dairy cattle?
30
What percent moisture should corn silage be chopped at when stored in horizontal bunker silos?
70% moisture
What is the largest cost on most dairy farms?
Feed
What hormone is responsible for maintaining pregnancy?
Progesterone
What pathway in young calves directs milk into the abomasum, bypassing the rumen, reticulum, and omasum?
Esophageal groove
What mineral is necessary for hemoglobin formation?
Copper
Fear can disrupt milk letdown in a cow. The hormone released that causes this disruption is:
Epinephrine
Recent research traits have shown that dairy cows prefer to be milked ______times/day if they are able to choose.
Four or more times
Dairy cattle frequently develop milk fever shortly after calving. They become immobile, comatose, and may die w/o treatment. The treatment typically involves:
Intravenous injection of calcium gluconate
What is an anion?
A negatively charged ion
