Impotentie brengt een constant ongemak met zich mee, net als fysieke en psychologische problemen in uw leven cialis kopen terwijl generieke medicijnen al bewezen en geperfectioneerd zijn

Microsoft word - agricultural sciences p1 feb-march 2011 memo eng.doc

NATIONAL
SENIOR CERTIFICATE
AGRICULTURAL SCIENCES P1
FEBRUARY/MARCH 2011
MEMORANDUM

MARKS: 150

This memorandum consists of 9 pages.
SECTION A

QUESTION 1.1
QUESTION 1.3
1.3.1 Proventriculus/glandular stomach √√
X√√ D
X√√ C D 1.3.3
X√√ C D
production unit √√
X√√ B C D
1.3.4 Quarantine station √√
X√√ B C D 1.3.5 Testes √√
X√√ D
QUESTION 1.2
QUESTION 1.4
1.4.2 Shed/shelter/enclosure/housing/tree TOTAL SECTION A: 45

SECTION B
QUESTION 2

2.1
The passage/movement of food in the alimentary canal Name of the specific food mixed with saliva The process of moving down the food in the alimentary canal • Peristalsis
Name of the enzyme found in the food/bolus. The chemical change created by ptyalin/salivary amylase Breaks down/converts/changes starch/polysaccharides into
maltose
Diagrams of digestive systems of farm animals
A: Rumen
B: Omasum
C: Abomasum
Diagram 2 and
Small structures/compartments
Undeveloped structures/compartments/rumen not developed
Roughage/hay
Water
The young ruminant stomachs/rumen/reticulo-rumen are not yet developed and do not have the ability to digest cellulose
Milk is a liquid and water intake will influence the quantities of milk intake/animal should not be thirsty or too full with water or oversupplied with water
Urea as a NPN source
In the season when the pastures are dry/winter in summer rainfall area/summer in winter-rainfall area/during droughts
The plants are pale and not green – no chlorophyll or other components that are rich in protein
Nitrogen
Supplied to supplement feed components/vitamins/proteins/ minerals/carbohydrates
that are not sufficiently available to the animal
To improve the growth of the animal
To improve the production of the animal (Any 2)
Urea should be hydrolysed
Lucerne pasture
− %DP
= 1:4,8
Not suitable and
The ratio is below 1 : 6
Lucerne is a good protein source/rich in proteins
It is more expensive than other sources of carbohydrates which can rather be used for fattening purposes (Any 2)
The digestibility of younger plants are higher/at this stage the plant has a high digestibility
The plants has plenty of green nutritious leaves/has a higher protein value at this stage
The plants are still succulent/herbaceous (Any 1)
Ratio in which feeds are mixed
Maize meal 9% 13 parts

Peanut-oilcake meal 38% 16 parts
Ratio: 13 :16
or
13 parts maize meal mixed with 16 parts peanut-oilcake meal (4)
Feed Components
Feed A
It has the highest protein content for growth
Sodium/Na

QUESTION 3
3.1
Structures for animal control
A/D/E
(a) Resistant to heat and drought/hardy animal Dark skin/ pigmentation/adapted to local harsh conditions
Very good walkers/strong legs
(c) Very resistant to pests and parasites
• High milk production /produce healthy and heavy weaners
• Strong maternal instincts (Any 2)
The heat energy that was supposed to be used to keep them
warm
will now be used to maximize production
by the provision of shelter animals are kept cooler/more protected from the heat
and will produce at higher levels
Graph of temperature requirement for broiler chickens
At a very young age the temperature requirements is high (35 °C) and gradually becomes less up to 4 weeks of age
It then stays constant at 20 °C
Temperature requirements of broiler chicken
Age in weeks
Abnormal behaviours of livestock
hurts the animals or another
• Abnormal reproductive behaviours
Goat handling facility
Yes an intensive unit and
Capital intensive
Kept in high density/restricted area
Special feeding facilities/specially formulated feeds
Animals controlled and carefully supervised
There is a control of environmental factors (Any 2)
(c) C/E
Animal manure is placed in a pit/compost heap/dumping site/landfill Animals in transit
Do not combine young and old animals together
The floor of the truck must not be slippery
Obtain a movement permit/other relevant documents
Strong structures/enclosure (Any 3)
Meat is bruised/bloody
Delayed rigor mortis
Poor colour/pale meat
Meat gets tough (Any 2)

QUESTION 4

4.1
The process of spermatogenesis
The primary male sex cells develop in the tubules of the testis
form spermatozoa
Testis
Spermatocytogenesis
The halving of the number of chromosomes in the reproductive cells
To transport the genetic information to the reproductive cells (outflanking)
Hypoplasia
Cryptorchidism
Sperm defects (Any 2)
Hormone levels of farm animals
A – FSH
C – progesterone
Symptoms of oestrus
Ovulation/rupturing of the follicle/release of ovum
The corpus luteum secrete the hormone progesterone
Flushing of fertilised eggs/embryos from the female uterus/embryo transplantation
flushing medium is used to move the embryos in the uterus
The flushing medium is firstly injected into the uterus through the reproduction canal and
Then the flushing medium is forced out of the animal to catch the embryos
The liquid medium protects the embryos while it is moved (Any 3)
A large number of offspring from a single superior animal
Surrogate/recipient cows now reproduce valuable offspring
Indigenous knowledge of controlling animal diseases and pests
Acaricides/contact poison
Systemic formulation/drugs
Ricin/organic extracts
• Ricin is easily obtainable from the castor-bean plant
cheap
• The extraction process of ricin is not complicated
• No threat of environmental pollution
• They are not highly poisonous to the human beings/farm workers (Any 2)
The name of the pest that is associated with mange: • Mites/ascaris
Poor penetration into the fur and skin
Label of Lintex medication
Act 36 of 1947
Dry places (Any 1)
50% effective in more than 50% of the treated animals
= 1 200 mℓ/1,2 litre
= 150 mℓ
Total: 1 200 mℓ + 150 mℓ = 1 350 mℓ
Rotational grazing
Avoid wet places
Avoid keeping animals in pens
Use biological/indigenous methods of control (Any 2)
TOTAL SECTION B: 105
GRAND TOTAL:

Source: http://www.besteducation.co.za/home/wp-content/uploads/2013/01/Agricultural-Sciences-P1-Feb-March-2011-Memo-Eng.pdf

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