This set of Dairy Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Cows in Dairy – 1”.
1. What is the most common breed of dairy cow?
a) Holstein
b) Aryshire
c) Brown Swiss
d) Jersey
View Answer
Explanation: Holstein Friesians are a breed of dairy cattle originating from the Dutch provinces of North Holland and Friesland, and Schleswig-Holstein in Northern Germany and Jutland. They are known as the world’s highest-production dairy animals.
2. What is the cow’s first milk called?
a) Holostrum
b) Drostrum
c) Colostrum
d) milk
View Answer
Explanation: Colostrum is a form of milk produced by the mammary glands of cows during pregnancy. Most species will generate colostrum just prior to giving birth.
3. What are the six nutrients animals need?
I. carbohydrate
II. fat and protein
III. vitamin
IV. mineral and water
a) I only
b) II and III
c) III and IV
d) I, II, III, and IV
View Answer
Explanation: There are seven major classes of nutrients: carbohydrates, fats, fiber, minerals, protein, vitamin, and water. The macronutrients (excluding fiber and water) provide structural material (amino acids from which proteins are built, and lipids from which cell membranes and some signaling molecules are built) and energy.
4. How soon before the show should an exhibitor begin fitting and training animals?
a) 5months
b) 2 months
c) 1 year
d) 8months
View Answer
Explanation: The purpose of proper fitting and showmanship is to present your animal to its best advantage for evaluation by. Fitting and training should begin 2 months before the show.
5. What is a male dairy animal called?
a) cow
b) vache
c) moose
d) bull
View Answer
Explanation: A bull is an intact (i.e., not castrated) adult male of the species Bos taurus (cattle). It is the male dairy animal.
6. One group of mammals eats meat and are called carnivores. What is the group that eats grass and grains called?
a) omnivore
b) autotrophs
c) carnivore
d) herbivore
View Answer
Explanation: cows are animal which doesn’t eat meat. They survive on grass and feed. They are called herbivores.
7. Which of the following are three common breeds of dairy cows in the United States?
I. Holstein
II. Guernsey
III. Jersey
a) I only
b) II only
c) III only
d) I, II, III
View Answer
Explanation: Holstein, Guernsey and jersey are most popular cattle breeds. Apart from them lesser known are Swiss brown.
8. What special ingredient in colostrums helps fight infection and disease in the newborn calf?
a) protein
b) carbohydrate
c) ammonia
d) antibodies
View Answer
Explanation: Most species will generate colostrum just prior to giving birth. Colostrum contains antibodies to protect the newborn against disease.
9. What is the nutrient that eventually becomes part of muscle, bone and blood?
a) protein
b) carbohydrate
c) mineral
d) antibodies
View Answer
Explanation: Proteins are the building blocks of a body. Protein consumption end up being a part of muscle, bone and blood.
10. What purpose is served by covering a dairy show animal with a blanket?
I. loosens the hair
II. keeps animal clean
a) I only
b) II only
c) I and II
d) None
View Answer
Explanation: Covering animal helps in loosening of hair. Covering the animal with blanket also aid in keeping the animal clean.
11. The time between conception and parturition is called ______
a) reproduction period
b) gestation period
c) feed period
d) pregnancy
View Answer
Explanation: Gestation length varies by age of dam, breed, and sex of the calf. Gestation length ranges from 279 to 287 days. For most breeds, 283 days is common. Cows having bull calves tend to have a slightly longer gestation compared to cows having heifer calves.
12. What breed of dairy cow came to the United States from Holland?
a) Holstein
b) Brown Swiss
c) Arya
d) jersey
View Answer
Explanation: The Holstein cow originated in Europe. The major historical development of this breed occurred in what is now the Netherlands and more specifically in the two northern provinces of North Holland and Friesland which lay on either side of the Zuider Zee.
13. What two colors is the Holstein breed?
a) grey and white
b) brown and black
c) black and white
d) white and brown
View Answer
Explanation: Holsteins are big, stylish animals with color patterns of black and white. A healthy Holstein calf weighs 90 pounds or more at birth. A mature Holstein cow weighs about 1500 pounds and stands 58 inches tall at the shoulder.
14. What is the process called whereby milk is heated to a high temperature?
a) freezing
b) chilling
c) pasteurization
d) vacuum treatment
View Answer
Explanation: Pasteurization is heat treatment processing a liquid or food to kill pathogenic bacteria to make the food safe to eat. The use of pasteurization to kill pathogenic bacteria has helped reduce the transmission of diseases.
15. Which vitamin keeps eye and body cell linings healthy and working?
a) vitamin D
b) vitamin C
c) vitamin K
d) vitamin A
View Answer
Explanation: Vitamin A helps form and maintains healthy skin, teeth, skeletal and soft tissue, mucus membranes, and skin. It is also known as retinol because it produces the pigments in the retina of the eye. Vitamin A promotes good vision, especially in low light.
Sanfoundry Global Education & Learning Series – Dairy Engineering.
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