Question

Match List-I with List-II
\begin{tabular{ll} List-I (Unconventional feed) & List-II (Anti-nutritional factor)
(A) Cottonseed cake & (I) Phorbol esters
(B) Neem seed cake & (II) Gossypol
(C) Jatropha seed cake & (III) Tannins
(D) Mango seed kernel & (IV) Nimbin

Choose the correct answer from the options given below:

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (II), (B) - (III), (C) - (IV), (D) - (I)
• (A) - (III), (B) - (II), (C) - (I), (D) - (IV)
• (A) - (II), (B) - (IV), (C) - (I), (D) - (III)

Hint:

To easily solve matching questions about anti-nutritional factors, look for obvious plant-chemical name associations: Neem \(\rightarrow\) Nimbin.
Cottonseed \(\rightarrow\) Gossypol (from the genus *Gossypium*).

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Unconventional feed ingredients are alternative sources of nutrients but often contain natural toxic or anti-nutritional compounds that limit their use in animal feeds unless they are deactivated or processed.

Step 2: Detailed Explanation:
Let us match each unconventional feed with its corresponding anti-nutritional or toxic factor:
- (A) Cottonseed cake: Contains Gossypol (II), a polyphenolic pigment that is toxic to non-ruminants. It can cause cardiac irregularities, respiratory distress, and impair reproductive performance.
- (B) Neem seed cake: Contains bitter triterpenoid compounds, primarily Nimbin (IV) and azadirachtin. These compounds make the feed unpalatable and can cause reproductive issues if fed in large amounts.
- (C) Jatropha seed cake: Contains highly toxic Phorbol esters (I) alongside trypsin inhibitors. Phorbol esters cause severe gastrointestinal inflammation, mucosal bleeding, and can be fatal to livestock if not detoxified.
- (D) Mango seed kernel: Is rich in hydrolyzable and condensed Tannins (III). Tannins bind to dietary proteins and digestive enzymes, reducing protein digestibility and feed palatability.
Matching these pairs gives: (A)-(II), (B)-(IV), (C)-(I), (D)-(III).

Step 3: Final Answer:
The correct matching sequence is (A) - (II), (B) - (IV), (C) - (I), (D) - (III), which corresponds to Option (D).