Here you will get the CBSE Class 9 Science notes on chapter 15 ‘Improvement in Food Resources’ (Part-III) .
With the changed exam structure, now CBSE Class 9th students will have to study full syllabus for the annual exams. So, they need a study material that will allow them to revise easily asnd quickly. With the chapter notes provided here, it will become easy to access a large and authentic information in less time.
Main topics covered in this part of CBSE Class 9 Science, Improvement in Food Resources: Chapter Notes (Part –III), are:
Key notes for Chapter- Improvement in Food Resources, are:
Care of Cattle
Cattle farming consists of four components:
Shelter, Food, Grooming and Protection from diseases
4. Protection from Diseases
Before discussing protection we have to know about other factors related to diseases of cattle:
Diseases of Cattle:
The diseases of dairy animals are broadly classified into the following categories:
Symptoms of sick animals:
Prevention of cattle diseases:
It is the rearing of domesticated fowl, ducks ,geese, turkey to obtain eggs and meat.
It is the cheap source of protein.
Breeds of poultry:
(i) Indegenous Breeds eg Aseel
(ii) Exotic Breeds eg Leghorn
Management Practices in Poultry farms:
Fish production is a great source of protein to our diet.
Fish production is of two types:
(i) Finned Fish Production I True Fish Production: It includes production and management of cartilaginous and bony fishes such as pomphret, tuna cod, catla, prawns, rohu, etc.
(ii) Unfinned Fish Production: It includes production of shellfish such as prawns, mollusks.
Depending on the mode of obtaining fishes, fishing is of two types:
(i) Capture Fishing: Here, naturally living fish is caught from water, both marine and inland.
(ii) Culture Fishing: it is cultivating, rearing and harvesting of fish. Culture fishery is also called fish farming or pisciculture and aquaculture.
The practice of rearing & culturing marine fish, i.e., fish found in seas and oceans is called marine fishing or mariculture.
Tuna, cod, sardines, Bombay duck, pomphret, mackerel ,etc are common marine fish.
Marine fishes are caught by:
(1) Traditional methods: These include fishing nets and gear operated fishing vessels.
(2) Modern methods: These include use of ecosounders and satellite to locate fish shoals.
It includes fish production in fresh water (for example ponds, rivers, lakes, reservoirs) and brackish water (for example estuaries). Inland fishing is also named as aquaculture.
Composite Fish culture
Advantages of composite culture:
Disadvantages of composite culture:
It is the practice of keeping, caring and management of honeybees on a large scale for obtaining honey and wax. It is also called apiculture.
Apiaries /Bee farms
They are the places where the bees are raised for commercial honey production.
Indigenous varieties: Apis cerana indica (Indian bee), Apis dorsata (Rock bee), Apis florae (Little bee)
Exotic varieties: Apis mellifera (Italian bee), Apis adamsoni (South African bee)
Mellifera is domesticated in India on large scale because of its following advantages:
Colony of honey bee:
Honey bees are social, polymorphic insects which live in colonies in nests (known as bee-hive).
There are three types of honey bees in the bee colony:
Queen Bee: She is the supreme bee in a colony.
Drones: They are smaller and shorter than the queen bee.
Workers: They are the most active members of the colony.
Try the following questions:
Q1. What management practices are common in dairy and poultry farming?
Q2. Name two types of animal feed and write their functions.
Q3. Suggest some preventive measures for the diseases of poultry birds.
Q4. What is composite fish culture system? Mention one merit and one demerit of this system.
Q5. What is hormonal stimulation in fish and how is it done in fish?
Q6. Why bee keeping should be done in good pasturage?