Summary
Summary Grade 12 Agricultural sciences Notes
- Course
- Institution
This document consists of summary notes on the aspects and content covered in grade 12 Agricultural sciences
[Show more]
Seller
Follow
BookSquad
Reviews received
Content preview
Mambane Secondary School Agricultural Sciences Grade 12 NotesAGRICULTURAL SCIENCES
NOTES
GRADE 12 (2022)
“AGRICULTURE IS MY CULTURE”
COMPILED BY MR MASHABA F.S.
SURNAME : …………………………………………
FULLNAMES :………………………………………….
CLASS :……………….
1|Page
,Mambane Secondary School Agricultural Sciences Grade 12 Notes
ACKNOWLEDGEMENTS:
The following sources are acknowledged for using their information:
➢ Study and master agricultural sciences grade 12
➢ Focus on agricultural sciences grade 12
Almost all the information in the notes was compiled using the above-mentioned
sources for the Mambane secondary school grade 12 learners. Therefore, the notes
are NOT FOR SALE. I the compiler apologise for any errors or omissions and invite
copyright holders to contact me if any have occurred, so that we can rectify them.
2|Page
,Mambane Secondary School Agricultural Sciences Grade 12 Notes
ANIMAL NUTRITION
➢ Animal nutrition is the food that animals eat, the way it is digested and used
in the animal’s body.
Fundamental processes in the digestive system
➢ Ingestion is the process whereby food is taken into the mouth.
➢ Digestion is the process whereby food molecules are broken down into small
particles.
Two types of digestions are; Mechanical digestion and Chemical digestion.
➢ Absorption is the process whereby the digested food is taken up by the
blood streams.
➢ Assimilation is the movement of food to different cells of the body.
➢ Secretion is the process whereby digestive juices are released by different
organs of the body.
➢ Egestion/excretion is the elimination of waste out of the body.
Ruminants and Non-ruminants
Figure 1.1.1 Examples of ruminants & non-ruminants animals
Examples of ruminant animals
➢ Cattle
➢ Sheep
➢ Goats
Examples of non-ruminant animals
➢ Fowl
➢ Pig
➢ Donkey
➢ Horses
3|Page
, Mambane Secondary School Agricultural Sciences Grade 12 Notes
Comparison of external structure of the alimentary canal of ruminants and non-
ruminants
Ruminants Non-ruminants
➢ Polygastric ➢ Monogastric
➢ Complex stomach ➢ Simple stomach
➢ Digest food with high quality fibre ➢ Cannot digest food with high
and cellulose quality fibre and cellulose
➢ Chew their food partially, ➢ Chew their food properly and
regurgitate later and re-chew. swallow it once
Figure 1.1.2 the external structure of the alimentary canal of a goat
Figure 1.1.3 the external structure of the alimentary canal of a cow
4|Page
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BookSquad. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.14. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now