With reference to cattle feed, consider the following statements: 1. Roughage is largely composed of proteins with negligible fibre. 2. Concentrates are low in fibre and contain relatively high levels of proteins. 3. Feed additives containing micronutrients are used to promote the health of the animal. Which of the statements given above is/are correct?

The correct option is (c). Explanation The food requirements of dairy animals are categorized into two main types: maintenance requirements (to support basic life functions) and milk producing requirements (to support lactation). To meet these needs, cattle feed is scientifically classified into roughage and concentrates based on their nutrient density and fibre content. Statement-wise Analysis: - Statement 1 is Incorrect. Roughage is a bulky feed that is largely composed of fibres (such as cellulose) and is generally low in nutrient content like proteins and carbohydrates. Examples include fodder, hay, and straw. The statement incorrectly claims it is composed of proteins with negligible fibre. - Statement 2 is Correct. Concentrates are feed mixtures that are low in fibre and contain relatively high levels of proteins and other nutrients. Examples include grains, seeds, and oil cakes. They are energy-dense and essential for high milk production. - Statement 3 is Correct. Cattle feed often includes feed additives containing micronutrients (vitamins and minerals) and sometimes antibiotics or hormones. These are administered to promote the overall health of the animal and enhance milk output. Key Takeaway: Roughage provides bulk and fibre essential for rumen health but is low in nutrients, whereas Concentrates provide high protein and energy with low fibre content to support growth and lactation.

With reference to cattle feed, consider the… - NCERT Class 9 Science MCQ

NCERT Class 9 Science — Chapter 3: Improvement in food resources

mcqmedium

With reference to cattle feed, consider the following statements:

Roughage is largely composed of proteins with negligible fibre.
Concentrates are low in fibre and contain relatively high levels of proteins.
Feed additives containing micronutrients are used to promote the health of the animal.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 9 · Page 147

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c).

Explanation

The food requirements of dairy animals are categorized into two main types: maintenance requirements (to support basic life functions) and milk producing requirements (to support lactation). To meet these needs, cattle feed is scientifically classified into roughage and concentrates based on their nutrient density and fibre content.

Statement-wise Analysis:

Statement 1 is Incorrect. Roughage is a bulky feed that is largely composed of fibres (such as cellulose) and is generally low in nutrient content like proteins and carbohydrates. Examples include fodder, hay, and straw. The statement incorrectly claims it is composed of proteins with negligible fibre.
Statement 2 is Correct. Concentrates are feed mixtures that are low in fibre and contain relatively high levels of proteins and other nutrients. Examples include grains, seeds, and oil cakes. They are energy-dense and essential for high milk production.
Statement 3 is Correct. Cattle feed often includes feed additives containing micronutrients (vitamins and minerals) and sometimes antibiotics or hormones. These are administered to promote the overall health of the animal and enhance milk output.

Key Takeaway:

Roughage provides bulk and fibre essential for rumen health but is low in nutrients, whereas Concentrates provide high protein and energy with low fibre content to support growth and lactation.

Your note

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