Question:
Find the correct answer based on following statements:
Statement (I): Light facilitates cleanliness since 'dirt unseen is dirt left undisturbed'.
Statement (II): Light acts as material factor in the practice of hygiene but not a necessary pre-requisite for efficient management.
Find the correct answer based on following statements:
Statement (I): Light facilitates cleanliness since 'dirt unseen is dirt left undisturbed'.
Statement (II): Light acts as material factor in the practice of hygiene but not a necessary pre-requisite for efficient management.
Statement (I): Light facilitates cleanliness since 'dirt unseen is dirt left undisturbed'.
Statement (II): Light acts as material factor in the practice of hygiene but not a necessary pre-requisite for efficient management.
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Remember that light is a crucial environmental regulator in livestock production. In poultry, for example, manipulating the photoperiod (lighting duration) is essential to stimulate egg laying in layers and growth in broilers.
Updated On: Jul 24, 2026
- Both Statement (I) and Statement (II) are correct.
- Both Statement (I) and Statement (II) are incorrect.
- Statement (I) is correct but Statement (II) is incorrect.
- Statement (I) is incorrect but Statement (II) is correct.
Show Solution
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Providing adequate lighting is a key factor in livestock housing design, affecting both sanitation practices and the physiological health of the animals.
Step 2: Detailed Explanation:
Let us analyze both statements:
Statement (I): This is a classic principle of veterinary hygiene: "dirt unseen is dirt left undisturbed."
Without sufficient natural or artificial light, dark corners in a barn hide accumulated dust, manure, cobwebs, and feed residues.
These hidden residues can harbor pathogens and parasites.
Proper lighting makes dirt visible, encouraging workers to clean and disinfect the area thoroughly. Thus, Statement (I) iscorrect.
Statement (II): Light is a vital physiological regulator for animals, affecting circadian rhythms, pineal gland activity, melatonin secretion, reproductive hormones, and overall productivity.
Additionally, workers need clear visibility to perform daily management tasks such as heat detection, health checks, and milking.
Therefore, light is not just a material factor for hygiene; it is a critical, non-negotiable prerequisite for efficient farm management.
Stating that it is "not a necessary pre-requisite" is incorrect. Thus, Statement (II) isincorrect.
Therefore, Statement (I) is correct but Statement (II) is incorrect.
Step 3: Final Answer:
The correct option is (C).
Providing adequate lighting is a key factor in livestock housing design, affecting both sanitation practices and the physiological health of the animals.
Step 2: Detailed Explanation:
Let us analyze both statements:
Statement (I): This is a classic principle of veterinary hygiene: "dirt unseen is dirt left undisturbed."
Without sufficient natural or artificial light, dark corners in a barn hide accumulated dust, manure, cobwebs, and feed residues.
These hidden residues can harbor pathogens and parasites.
Proper lighting makes dirt visible, encouraging workers to clean and disinfect the area thoroughly. Thus, Statement (I) iscorrect.
Statement (II): Light is a vital physiological regulator for animals, affecting circadian rhythms, pineal gland activity, melatonin secretion, reproductive hormones, and overall productivity.
Additionally, workers need clear visibility to perform daily management tasks such as heat detection, health checks, and milking.
Therefore, light is not just a material factor for hygiene; it is a critical, non-negotiable prerequisite for efficient farm management.
Stating that it is "not a necessary pre-requisite" is incorrect. Thus, Statement (II) isincorrect.
Therefore, Statement (I) is correct but Statement (II) is incorrect.
Step 3: Final Answer:
The correct option is (C).
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