Topics:
Animal Nutrition, Animal Refresher
Match: Species Specific Essential Nutrients
MATCH THE COLUMN: Limiting Nutrients by Species
| Table-I | Table-II |
|---|---|
| 1. Limiting amino acid in cat | (a) Glycine |
| 2. Limiting amino acid in pig | (b) Arachidonic acid |
| 3. Limiting amino acid in sheep | (c) Taurine |
| 4. Limiting amino acid in Poultry | (d) Linoleic acid |
| 5. Essential fatty acid in pig & poultry | (e) Lysine |
| 6. Essential fatty acid in cat | (f) Methionine |
- 1-c, 2-e, 3-f, 4-a, 5-d, 6-b — Correct Answer
- 1-b, 2-e, 3-f, 4-a, 5-d, 6-c
- 1-c, 2-a, 3-f, 4-e, 5-d, 6-b
- 1-f, 2-e, 3-c, 4-a, 5-d, 6-b
Explanation:
Correct Answer: 1-c, 2-e, 3-f, 4-a, 5-d, 6-b
Species-specific essential amino acids and fatty acids: Cat → Taurine (AA) + Arachidonic acid (EFA); Pig → Lysine (limiting AA) + Linoleic acid (EFA); Sheep → Methionine; Poultry → Glycine; Pig & Poultry EFA → Linoleic acid; Cat EFA → Arachidonic acid.
Species-Specific Nutrient Requirements
| Species | Limiting/Essential AA | Essential Fatty Acid |
|---|---|---|
| Cat | Taurine (cannot synthesize) | Arachidonic acid (C20:4) |
| Pig | Lysine (first limiting) | Linoleic acid (C18:2) |
| Sheep | Methionine | Linoleic acid |
| Poultry | Glycine (first limiting) | Linoleic acid (max egg size) |
Why Cats Are Unique
- Cats cannot synthesize Taurine adequately → must be dietary; deficiency causes retinal degeneration and dilated cardiomyopathy.
- Cats lack Δ6-desaturase activity → cannot convert linoleic acid to Arachidonic acid → must receive pre-formed Arachidonic acid (found in animal tissues).
Why Other Options Are Wrong
- All other options misplace at least one species-nutrient pair, especially Cat (Taurine, not Lysine) and Poultry (Glycine, not Methionine).
