Exotic Pig Breed Used for Upgrading
The exotic breed of pig widely used for the upgrading of desi pig is-
- Berkshire
- Landrace
- LWY (Large White Yorkshire) — Correct Answer
- MWY (Middle White Yorkshire)
Explanation:
Correct Answer: LWY (Large White Yorkshire)
The Large White Yorkshire (LWY) is the most widely used exotic pig breed in India for upgrading indigenous (desi) pig breeds. It is valued for its superior growth rate, feed conversion efficiency, high prolificacy, and good carcass quality.
Grading Up Concept (Applied to Pig Upgrading)
- Purebred LWY sire × desi pig female, repeated generation after generation
- After 7–8 generations, the progeny are essentially pure LWY in genetic composition
Grading Up — Purity by Generation
| Generation | % LWY (Purity) | % Desi (Non-descript) |
|---|---|---|
| F1 (1st) | 50% | 50% |
| F2 (2nd) | 75% | 25% |
| F3 (3rd) | 87.5% | 12.5% |
| F7–8 (7th–8th) | ~99.2–99.6% | <1% |
Advantages of Cross-Breeding in Pigs
- Breed complementation: combining quality of two or more breeds
- Exploits hybrid vigour (heterosis)
- Improves traits with low genetic variation within desi breeds
📚 About this Topic — Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
