#251-300 Flashcards
When comparing bulls for artificial insemination, what does “SCR” stand for?
A. Sire conception rate
Which of the following is NOT classified as a water soluble-vitamin?
D. Vitamin A
In the ruminant digestive system, which of the following is the name of first section of the small intestine that is connected to the abomasum?
C. Duodenum
Research has shown that by formulating lactating cow rations with proper amounts of amino acids, we can decrease the crude protein content of the ration and reduce_____
A. Nitrogen excretion
In order to prevent bloat, the feed additive Poloxalene is often added to feed rations for cows that are grazing. Which of the following grazed forages are most likely to cause bloat?
D. Alfalfa and Clover
Rumen bacteria enable dairy cattle to utilize which feed suppliment?
B. Urea
Heritability for milk production in dairy cattle is:
B. 30%
If the heat detection rate is 30% and the conception rate is 30%, what is the pregnancy rate?
A. 9%
Which of the following is a infectious disease?
C. Ringworm
What female hormone causes follicles to begin to develop?
B. Follicle stimulating hormone
In dairy cows, what is the name of the disease caused by the organisms Staph Aureus, Strep Uberis, and Klebsiella?
C. Mastitis
What stomach compartments are not developed in a newborn calf?
D. Rumen and Reticulum
When compared to normal corn silage, brown mid-rib corn silage has more energy and high digestibility. This is due largely to its lower content of _______.
B. Lignin
Which one of the following describes biotin?
D. A B-Vitamin
A material used in a footbath for cows with foot rot problems is:
A. Copper Sulfate
Milking time is best reduced by:
D. Preparing cows properly
The CWT programs stands for Cooperatives Working Together. Which of the following describes the function of this program?
B. A national dairy farmer-funded program that is used to help stabilize milk prices
Which one of the following is the name of the part of the cow’s back that lies between the withers and the loin?
D. Chine
What is the name of the term for a farm’s unique identification number that is part of the National Animal Identification System?
D. Premis ID
Dairy farmers frequently place a stomach magnet into their cows to:
C. Prevent ingested metal objects from interfering with the digestive tract or the respiratory system
The rumen of a cow is located:
A. Left side of the body
The rumen of a mature cow will hold approximately:
D. 40 gallons
The portion of the ruminant digestive system which is known as and functions as the “true” stomach is the:
A. Abomasum
One of the highest heritability traits for milk is:
D. % protein
The typical lactation curve shows a dairy cow reaching her peak production about ____ days into the lactation cycle.
C. 50-70 days
Cows treated with BST typically show an increase in milk production of:
B. 10%
Dairy producers are particularly watchful for zoonotic diseases in their herd. Zoonotic diseases are defined as those that:
C. Pass from animals to humans and vice versa
A dairy expects to cull approximately ______% of their herd each year.
B. 25-30
A Babcock test may be used to measure the ______% of milk.
B. Fat
Almost 95% of the dairy cows in the U.S. are:
D. Holstein
Dairy heifers need to be bred at _____ of age assuming they are at least 65% of their adult weight at this time.
C. 15 months
Producers using BST must give their cows an injection of it every:
C. 14 days
Most dairies in Texas are considered to be CAFO’s. A CAFO is:
D. Concentrated Animal Feeding Operation
Dairy cattle were first successfully cloned in the:
D. 2000’s
Milk traits, i.e. fat protein, SNF and etc., tend to have a heritability of about:
B. 20-30%
Normal presentation of a calf for parturition will have:
A. Front teeth toward rear of cow with head, nose first, between them
One ejaculation from a bull typically contains __________ sperm.
C. 5,000,000
Dairy herds have historically used artificial insemination. Currently approximately _____% of all dairy pregnancies results from A.I.
C. 85
The annual sale of dairy semen exceeds _____ straws.
D. 20,000,000
The portion of the ruminant digestive system which consists of many folds of tissue is the:
D. Omasum
Dairy cows produce milk that is relatively high in B complex vitamins. Because they are ruminants:
B. it is not necessary to supplement the intake of vitamin B complex
Dairy cattle frequently develop milk fever shortly after calving. They become immobile, comatose, and may die without treatment typically involves:
A. Intravenous injection of calcium gluconate
A _____ gene in Black and White Holsteins is responsible for the red and white color being expressed at times.
D. Recessive
A ____ is usually necessary when feeding Dairy Cows TMR rations.
C. Mixer box on a truck or trailer
Young dairy calves frequently suffer and may die due to scours. The chief cause of deadly scours at this age is:
B. The bacteria Escherichia Coli
The dairy breed which produces the highest volume of milk is the:
A. Holstein
Dairy cows need roughage to concentrate ratio of approximately _____ to maintain the desired fat content in the milk
B. 40-60
A calf’s birth weight is approximately ___% of its mature weight.
B. 5
The circulatory system of a dairy cow is very important to milk production. A dairy cow must circulate about _____ blood for each pound of milk produced.
D. 400 pounds
Blood vessels that transport blood away from the heart are called:
B. Arteries
