NSC Agricultural Sciences Animal Nutrition: 1.1 Various options are provided

Question

1.1 Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question numbers (1.1.1 to 1.1.10) in the ANSWER BOOK, e.g., 1.1.1 B.

1.1.1 ONE of the following is NOT part of the fore-stomach compartments of a ruminant:
A Rumen
B Omasum
C Abomasum
D Reticulum

1.1.2 An example of a protein-rich concentrate:
A Maize meal
B Oat meal
C Wheat meal
D Carcass meal

1.1.3 Tubular indentations of the epithelium between the villi that secrete succus entericus:
A Islets of Langerhans
B Pancreatic ducts
C Glands of Lieberkühn
D Bile ducts

1.1.4 A nutritive ratio of 1 : 4 implies that:
(i) The feed has high protein content
(ii) The feed is suitable for growth and reproduction
(iii) The feed may contain one or part of carbohydrates, there are four parts of non-nitrogenous compounds
Choose the CORRECT combination:
A (i), (ii) and (iii)
B (ii), (iii) and (iv)
C (i), (ii), and (iv)
D (i), (ii) and (iv)

1.1.5 A farmer producing crops or livestock to generate profit using highly advanced technologies:
A Commercial farmer
B Nomadic farmer
C Subsistence farmer
D Communal farmer

1.1.6 The following are the requirements for an ideal poultry housing facility:
(i) Lengthwise orientation should be in a north-south direction.
(ii) The roof must be high and insulated.
(iii) Side walls should keep running water away from the house.
(iv) Side walls should not allow air movement through the house.
Choose the CORRECT combination:
A (i), (ii) and (iii)
B (ii), (iii) and (iv)
C (i), (ii), and (iv)
D (i), (ii) and (iv)

1.1.7 The microscopic organisms that live outside the body of the host, which cause the crusted skin leading to a loss of wool:
A Fleas
B Ticks
C Mites
D Lice

1.1.8 ONE of the following is NOT a sign of poor health in farm animals:
A Rough and dull coat with hair loss
B Too soft faeces and discoloured urine
C Bright eyes with pink membranes
D High body temperature and increased pulse rate

1.1.9 A sign of a cow approaching parturition:
A Sniffs and mounts other cows
B Milk production drops drastically
C Follows the bulls and other cows
D Urinates and defecates often

1.1.10 A factor that results in infertility in cows:
A Bill
B

1.2 Indicate whether each of the descriptions in COLUMN B applies to A ONLY, B ONLY, BOTH A AND B or NONE of the items in COLUMN A. Write A only, B only, both A and B or none next to the questions numbers (1.2.1 to 1.2.5) in the ANSWER BOOK.

1.2.1 A: Bile
B: Liver

1.2.2 A: Pharynx
B: Tongue

1.2.3 A: Heterothermic
B: Homeothermic

1.2.4 A: Poison bulb
B: Prostaglandin

1.2.5 A: Progesterone
B:

1.3 Give ONE word/term for each of the following descriptions. Write only the word/term next to the question numbers (1.3.1 to 1.3.5) in the ANSWER BOOK.

1.3.1 The enzyme that breaks down starch molecules, especially in pigs.

1.3.2 The small area where sheep are kept under intensive conditions and fed for maximum production.

1.3.3 A reproductive technique where semen is collected from a superior bull and deposited into the reproductive tract of a cow in oestrus.

1.3.4 Cows that need to mate three or more times before conceiving.

1.3.5 The inability of a bull to service cows that are in oestrus even though it has interest.

1.4 Change the underlined word(s) in each of the following statements to make them TRUE. Write only the answer next to the question numbers (1.4.1 to 1.4.5) in the ANSWER BOOK.

1.4.1 Digestible energy refers to the energy left after deducting energy loss through heat from metabolic energy.

1.4.2 The introduction of natural enemies to control parasite infestation is a chemical method.

1.4.3 The centrioles release an enzyme that assists the sperm cell to penetrate the ovum.

1.4.4 Di-oestrus happens when sexually mature female animals show no signs of oestrus.

1.4.5 Gestation period refers to the period in cows between two lactations.

1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2023 - Paper 1

Worked Solution & Example Answer:1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Sciences - Question 1 - 2023 - Paper 1

ONE of the following is NOT part of the fore-stomach compartments of a ruminant:

An example of a protein-rich concentrate:

Tubular indentations of the epithelium between the villi that secrete succus entericus:

A nutritive ratio of 1 : 4 implies that:

A farmer producing crops or livestock to generate profit using highly advanced technologies:

The following are the requirements for an ideal poultry housing facility:

The microscopic organisms that live outside the body of the host, which cause the crusted skin leading to a loss of wool:

ONE of the following is NOT a sign of poor health in farm animals:

A sign of a cow approaching parturition:

A factor that results in infertility in cows:

Indicate whether each of the descriptions in COLUMN B applies to A ONLY, B ONLY, BOTH A AND B or NONE of the items in COLUMN A:

Give ONE word/term for each of the following descriptions:

Change the underlined word(s) in each of the following statements to make them TRUE.

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