Biology Class 12 NCERT Solutions: Chapter 9 Strategies for Enhancement in Food Production Part 1 (For CBSE, ICSE, IAS, NET, NRA 2023)
Get unlimited access to the best preparation resource for CBSE/Class-12 : get questions, notes, tests, video lectures and more- for all subjects of CBSE/Class-12.
Q. 1 Explain in brief the role of animal husbandry in human welfare.
Answer:
- Animal husbandry deals with the scientific management of livestock. It includes various aspects such as feeding, breeding, and control diseases to raise the population of animal livestock.
- Animal husbandry usually includes animals such as cattle, pig, sheep, poultry, and fish which are useful for humans in various ways.
- These animals are managed for the production of commercially important products such as milk, meat, wool, egg, honey, silk, etc.
- The increase in human population has increased the demand of these products. Hence, it is necessary to improve the management of livestock scientifically.
Q. 2 If your family owned a dairy farm, what measures would you undertake to improve the quality and quantity of milk production?
Answer:
- Dairy farm management deals with processes which aim at improving the quality and quantity of milk production.
- Milk production is primarily dependent on choosing improved cattle breeds, provision of proper feed for cattle, maintaining proper shelter facilities, and regular cleaning of cattle.
- Choosing improved cattle breeds is an important factor of cattle management. Hybrid cattle breeds are produced for improved productivity.
- Therefore, it is essential that hybrid cattle breeds should have a combination of various desirable genes such as high milk production and high resistance to diseases.
- Cattle should also be given healthy and nutritious food consisting of roughage, fiber concentrates, and high levels of proteins and other nutrients.
- Cattle՚s should be housed in proper cattle-houses and should be kept in well ventilated roofs to prevent them from harsh weather conditions such as heat, cold, and rain.
- Regular baths and proper brushing should be ensured to control diseases.
- Also, time-to-time check-ups by a veterinary doctor for symptoms of various diseases should be undertaken.
Q. 3 What is meant by the term ‘breed’ ? What are the objectives of animal breeding?
Answer:
- A breed is a special variety of animals within a species. It is similar in most characters such as general appearance, size, configuration, and features with other members of the same species.
- Jersey and Brown Swiss are examples of foreign breeds of cattle. These two varieties of cattle have the ability to produce abundant quantities of milk.
- This milk is very nutritious with high protein content.
Objectives of animal breeding
- To increase the yield of animals.
- To improve the desirable qualities of the animal produce.
- To produce disease-resistant varieties of animals.