Agricultural Sciences Memo 1 (English)

November 2021 — Grade 12 / Matric — Agricultural Sciences

Memo 2021 Grade 12 English Agricultural Sciences Hub →

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🎯 150 marks 📄 10 pages 📝 80 items found 📚 2 topics

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Q1— Section header —

1.2.5only Both A and B A only None None (5 x 2\ (10\

1.3.5Gross energy/ GE Vector Placenta retention /retain ed placenta Spermatogenesis

1.4.5Vitamin /r etinol Neck/head clamp /head g ate Urethra

Q2— Section header —

2.1Feed intake

2.1.1Indication of the name of the animal COLUMN Pig COLUMN Fowl/chicken

2.1.2Reason COLUMN Chemical digestion starts from the mouth through amylase Ingest food using the lips and tongue The teeth grind the food Food is pushed down the oesophagus into the stomach where it

2.1.3Stating the structural difference in the large intestine of animals COLUMN There is one caecum

2.2Parts of the alimentary canal

2.2.1Identification of the letter (a\ (b\ (1\ (1

2.2.2TWO digestive juices deposited in small intestines Bile Pancreatic juice (2\

2.2.3Fat digestive enzyme secreted in pancreas Lipase (1\

2.2.4TWO reasons for breaking down of fat by bile To increase the surface area Allows lipase to work better /t o enhance chemical

2.3Mineral deficiency

2.3.1Naming the mineral deficient in animal Phosphorus /P (1\

2.3.2Name of the condition Pica (1\

2.3.3Indication of the feed Bone meal mineral lick (1\

2.4Feeds

2.4.1Classification of feeds Maize meal Concentrates Maize stalk Roughage (1\

2.4.2Importance of feeding roughage in (a\ Young ruminant Stimulate the development of rumen /fore stomach (b\ Adult ruminant Normal functioning of the

2.4.3Calculation of the ratio to which maize meal and fish meal be mixed to get a feed with 15% DP Maize meal 9% 21 parts 15%

2.5Digestibility coefficient

2.5.1Digestibility co efficiency DM = 15 kg x 84% (0,84\ 12,6 kg OR 84 x 15 kg =

3.5kg 100 12,6 kg 1 72,2 (5

2.5he percentage of the excreted material 27,8 (1\

2.6Fodder flow programme

2.6.1he month in which to reduce the number of farm animals June (1\

2.6.2Reason Feed availability is at its lowest 100 kg/ha More supplementary feed required

2.6.3Calculation of the total feed available for April (i n tons \ ha are available for grazing 800 kg/ha x 5 ha = 4

Q3— Section header —

3.1Heat stress in dairy cattle

3.1.1TWO visible ways cattle use to decrease the effects of heat Standing under trees/shade for protection from sun Standing inside the water to cool the body Standing apart/away from each other (Any 2\ (2\

3.1.2TWO importance of shelter for animals Increases young animals survival rate Protects animals from predators /theft Enables control of diseases and parasites Provides an

3.1.3TWO requirements for the vehicle transporting farm animals Floors should not be slippery Adequate ventilation Rails must be high and strong No sharp edges that can harm/hurt animals Vehicles should be clean

3.2The effect of environmental temperature

3.2.1he farm product Milk (1\

3.2.2Description of the relationship between dry matter intake, milk yield and water intake With ncrease environmental temperature dairy cows will eat less

3.3Production systems

3.3.1Identification of the production systems (a\ Farmer B (b\ Farmer A (1\ (1\

3.3.2Justification (a\ Extensive production system It took the herd longer to reach the live weight of 550 kg lower growth rate (b\

3.3.3A disadvantage in relation to input costs Input costs are high it is expensive (1\ Agricultural Sciences /P1 DBE/November 2021

3.4FMD in farm animals

3.4.1he pathogen causing FMD Virus (1\

3.4.2TWO main symptoms of FMD in farm animals Blister like lesions Painful ulcers Sticky, foamy salivation Severe lameness

3.4.3TWO roles of state in controlling animal diseases Public awareness eport the outbreak of FMD Quarantine services

3.4.4TWO economi c impact of FMD International trade decreases xport bans Reduce food security Decreased production

3.5ethods used to adminis ter medication to farm animals

3.5.1Identification of the pictures Picture A Picture Picture (Any 2\ (2

3.5.2Identification of the pictures Picture B Picture C (2\

3.6ifferent or ganisms harmful to farm animals

3.6.1erm referring to the orga nisms in pictures A, B, C and D Parasites (1\

3.6.2Classif ication of the o rgan isms PICTURE B External/ecto parasite PICTURE C

3.6.3Identif ication of the letter (a\ Redwater lue tick

3.7THREE plants that are poisonous to farm animals Thorn apple Poison bulb langkop Poison ivy

Q4— Section header —

4.1emale reproductive system

4.1.1Identification of the TWO secondary sex organs (Any 2\ (2\

4.1.2Providing the letter (a\ The site of fertilisation (b\ lands secreting

4.1.3TWO function s of the cervix (Part D\ (a\ Opens to llow

4.2ormone levels

4.2.1Definition of the concept oestrus The period when non pregnant female animals will be receptive to male animals/will allow mating (2\

4.2Indication whether the female farm animal is pregnant or not The f emale animal is not pregnant (1\

4.2eason The animal is showing a normal oestrus cycle /t he level of progesterone is decreasing /t

4.2.4Indication of the levels of FSH FSH level will be high (1\ Agricultural Sciences /P1

4.3Bar graph

4.3.1Bar graph showing the fat and protein percentages from weeks to 25 CRI TERIA/RUBRIC/MARKING GUIDELINES

4.4Synchronisation of oestrus

4.4.1Identification of the process Synchronisation of oestrus (1\

4.4.2TWO techniques/methods to induce synchronisation of oestrus Prostaglandin injection Synthetic progesterone/oestradiol injection Gonad tropin releasing hormone

4.510 15 20 25 Fat and protein (%\ Weeks The fat and protein percentage from week 5 to 25

4.4.3TWO disadvantages of the synchronisation of oestrus High management inputs/skills/technology are required Adequate facilities are required High costs/expensive Labour intensive ime consuming Pregnancy tests must be done frequently

4.5Re arrangement of the stages of mating in sequential order (1\

4.6Parturition

4.6.1The stage of parturition in the diagram Expulsion/ejection of the foetus elivery (Any 1\ (1\

4.6.2Term for birth difficulty Dystocia (1\

4.6.3TWO problems with the calf Calves with high birth weights/large calves Bull calves normally have higher birth weights Malformed calves/congenital defects /hydrocephalus Multiple births/twins Incorrect position of the calf/p

4.7Multiple births

4.7.1Identification of the type of multiple births (a\ Identical/monozygotic twins (b\ Fraternal/non

4.7.2Differentiation between Monozygotic Formed from the fertilisation of a single ovum izygotic Formed from the fertilisation of two different ova (1\

Topics Identified

Animal ProductionAgricultural Management

Mark Allocation

Total150 marks

Sections35 + 35 + 35 = 105 marks

Paper information

SubjectAgricultural Sciences

Year2021

SessionNovember

TypeMemo

PaperPaper 1

LanguageEnglish

Pages10

Downloads3

Examination context

Decade2020s

Years ago5y

SeasonSpring (SH)

Start dayFriday

Exam periodNovember 2021

Days since exam1,814

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