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ANH620S - ANIMAL HEALTH - 2ND OPP - NOV 2024 |
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nAm I BI A u n IVERSITY
OF SCIEnCE Ano TECHnOLOGY
FACULTY OF HEALTH, NATURAL RESOURCES AND APPLIED SCIENCES
SCHOOL OF AGRICULTURE AND NATURAL RESOURCES SCIENCES
DEPARTMENT OF AGRICULTURAL SCIENCE AND AGRIBUSINESS
QUALIFICATIONS: BACHELOR OF SCIENCE IN AGRICULTURE
QUALIFICATIONS CODE:
07BAGA
COURSE CODE: ANH620S
LEVEL: 7
COURSE: ANIMAL HEALTH
DATE: NOVEMBER 2024
PAPER: 1
DURATION: 3 HOURS
MARKS: 100
EXAMINER:
MODERATOR:
FIRST OPPORTUNITY EXAMINATION QUESTION PAPER
PROF. T. WASSENAAR
MRS. LUCIA TUYENI-KELAO KAFIDI
INSTRUCTIONS
1. Answer all the questions.
2. Write neatly and clearly.
3. Mark all answers clearly with their respective question numbers.
4. All written work MUST be done in blue or black ink.
5. No books, notes and other additional aids are allowed.
PERMISSIBLE MATERIALS
1. Pen & Pencil
2. Examination paper
3. Examination script
THIS QUESTION PAPER CONSISTS OF 5 PAGES
(Excluding This Front Page)
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SECTION 1: INFECTIOUS DISEASES
[32]
QUESTION 1.1
(5)
a) What is a notifiable disease?
(2)
b) List three animal diseases in Namibia that are notifiable according to the Animal
Health Act of 2011
(3)
QUESTION 1.2
a) Define the term "zoonosis"
b) Name three zoonotic diseases.
(4)
(1)
(3)
QUESTION 1.3
(8)
a) Below is an outline map of Namibia. Following the numbers on the map, name the
five different Foot and Mouth Disease zones and structures. (6)
3,
6.
'-------2.
L
5.
4.
b) Write short notes on the justification for the FMD zonings
(2)
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QUESTION 1.4
(15)
Below is a table containing some basic information about four infectious diseases. Fill in
the missing information in the empty cells
Disease
Zoonotic Type of
Yes or No pathoge
n
Affected
species(=
"susceptible
host")
Most important symptom
a)
Yes
Virus
b)
Nervous symptoms, behaviour
changes
African Swine c)
d)
e)
f)
Fever
Avian Influenza g)
(bird flu)
h)
i)
Respiratory symptoms with facial
swelling and blue comb
Lung Sickness j)
(CBPP)
k)
Cattle
Difficult breathing, emaciation,
discharge from nose, shallow
coughing
Enzootic
l)
abortion
m)
Sheep are
Abortions, few in first year with
most
abortion storms in subsequent
susceptible,
lambing season
but can affect
cattle too
n)
o)
•
African horse p)
sickness
bacteriu Cattle
m
q)
Equids (horse
family)
Cows: abortion, stillbirths, weak
calves.
Bull: epididymitis, orchitis,
infertility,
r) Name four forms of disease (0.5
x4)
Heartwater
s)
Black Quarter v)
(spons siekte)
Pasteurellosis X)
in sheep
t)
Bacteria
y)
Cattle, sheep,
goats and
antelopes
Cattle and
sheep
Sheep and
goats-
sometimes
cattle
u)
w)
z) Name two syndromes (2 x 0.5)
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SECTION 2: NON-INFECTIOUS DISEASES
[20]
QUESTION 2.1
(2)
During the delivery stage of a normal calving process - explain what you will see - as to
confirm it is a normal presentation of a calf.
QUESTION 2.2
(2)
Name the clinical signs you will expect in sheep with Geigeria ornativa poisoning.
QUESTION 2.3
(5)
The following relates to poisoning by the plant gifblaar/otjikuryoma/munkuguru:
a) Which of the included maps, show where in Namibia the plant that causes gifblaar
poisoning occurs
(1)
-·.··..---~~. -···--~,::::-:::::--:;:?
b)... ... =· ,_]
<' ...'.·..•.•.•.
' ,.
a
111
..,
•
---~
·-·--
_'_J"_.._..::::.:~._·-·
:i
b) What time of year are you most likely to get problems with poisoning from
Gifblaar/Poison leaf/ Otjikuryoma?
(1)
c) Explain why
(2)
d) There are at least 3 indicator plants (plants that are associated with Gifblaar).
Name one
(1)
QUESTION 2.4
(4)
A farmer in the north of Namibia has some cattle that usually graze along the vleis
(wetlands). Some of the animals show signs of anemia and visible bottle jaw, and when
one of the animals were slaughtered, they saw scarring in the liver and thickened bile
ducts.
a) What endo parasite do you think might be the cause? (1)
b) Looking at the table below - which chemical group of the different anthelmintics
would you suggest him to use on his animals?
(1)
c) What other advice can you give him to lower the impact or numbers of this parasite?
(2)
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Chemical group
*1 Macrocyclic lactones
2 Benzimidazoles
3 lmidiothiazoles
4 Salicylanilides
5 Phenols
6 Sulphonamides
7 Organophosphates
8 lsoquinaline
9 Other
(Tetrahydropyrimidine)
Remedies
lvermectin; Abamectin;
Moxidectin
Thibendazole; Mebendazole;
Albendazole; Triclabedazole;
Fenbendazole
Levamisole
Rafoxanide**; Closantel**;
Resorantel; Niclosamide;
Oxyclosanide
Nitroxynil; Disophenol
Clorsulon
Haloxon; Tricholorfon;
Napthalophos
Praziquantel
Morantel
Pyrantel
Spectrum
Roundworms; Fly larvae
Roundworms and eggs
Roundworms
Flukes and some
tapeworms
**Roundworms
Roundworms
Flukes
Roundworms
Tapeworms
Roundworms
QUESTION 2.5
(3)
Name three common symptoms you will encounter if your sheep flock has a high number
of roundworm infestation?
(3)
QUESTION 2.6
a) Does Tapeworms have a direct or indirect life cycle?
b) Explain the type of life cycle:
(4)
(1)
(3)
SECTION3: IMMUNITYANDANIMALHEALTH
QUESTION 3.1
Explain the concept of herd immunity.
QUESTION 3.2
Name the five freedoms that define the welfare needs of an animal?
[48]
(2)
(5)
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QUESTION 3.3
(5)
a) What are antibodies?
(1)
b) Which cells produce antibodies?
(1)
c) How do antibodies protect the body against pathogens (name three mechanisms)?
(3)
QUESTION 3.4
A farmer is complaining that his young cattle are dying. Describe the entire investigative
approach you will take to arrive at a tentative diagnosis of the cause(s) of mortalities in his
herd. For each procedure in the investigation, explain why you are asking a specific
question or doing a specific examination.
(20)
QUESTION 3.5
Complete the following sentence:
The vaccine against brucellosis is given to (a) ____
between (b) ___
and
(c}____
months because if given when they are older, they will test (d) ___ _
even though it won't harm them, and they will become immune.
(4)
QUESTION 3.6
(12)
With reference to the drug types listed below, discuss each type of drug's pharmacological
(treatment) function and explain when you would use it.
1 Antibiotic
(3)
a) Discuss the function
b) Explain when you would use it
2 Anti-inflammatory
(3)
a) Discuss the function
b) Explain when you would use it
3 Vaccine
(3)
a) Discuss the function
b) Explain when you would use it
4 Anthelmintic
(3)
a) Discuss the function
b) Explain when you would use it
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