An overview of the pig production industry, its importance, and the role of a pig production operator in the overall process.
Introduction to Pig Production
(A concise, organized overview for students, extension agents, or new farmers)
| Benefit | Explanation |
|---|---|
| High Feed‑to‑Gain Efficiency | Pigs convert feed to body weight more efficiently than many livestock (≈2.5–3 kg feed per kg gain). |
| Rapid Growth | Market weight (≈100 kg) reached in 5–6 months with proper nutrition. |
| Versatile Market | Whole‑carcass, pork cuts, processed products, breeding stock, and manure for fertilizer. |
| Small Land Footprint | Intensive systems need <0.2 ha per 100 sows; suitable for mixed‑crop farms. |
| Reproductive Potential | Sows can produce 2–3 litters/yr, 10–14 piglets/litter → high herd turnover. |
| Aspect | Key Points |
|---|---|
| Taxonomy | Sus scrofa domesticus – domesticated form of the wild boar. |
| Life Stages | 1. Sow/Boar (Adult) – breeding animals. 2. Gestation – 114 ± 2 days. 3. Farrowing – birth of piglets. 4. Weaning – 21–28 days old. 5. Grow‑out – 30 days → market weight. |
| Reproductive Traits | • Litter size: 8–12 piglets (average). • Ovulation rate: 12–16 ova per cycle. • Estrus cycle: 21 days (≈2 days of heat). |
| Physiology | • Thermoregulation: Neonates cannot regulate body temperature → need warm environment. • Digestive system: Omnivorous, simple stomach, well‑developed cecum for fiber fermentation. |
| Health Highlights | Major concerns: PRRS, swine influenza, African swine fever, porcine circovirus, gastro‑intestinal parasites, and lameness. Vaccination and biosecurity are essential. |
| System | Description | Typical Stocking Density | Pros | Cons |
|---|---|---|---|---|
| Extensive (Free‑range) | Pigs roam paddocks, forage on pasture & crop residues. | 1–2 m² per pig (very low) | Low feed cost, natural behavior, manure as fertilizer. | Slower growth, disease exposure, land‑intensive. |
| Semi‑intensive (Partially confined) | Sows housed in pens; piglets weaned to outdoor or indoor nursery. | 0.5–1 m² per pig (nursery) | Better growth rates, moderate land use. | Requires more management, partial biosecurity. |
| Intensive (Fully confined) | All stages housed in climate‑controlled buildings; total feed control. | 0.3–0.5 m² per pig (grow‑out) | Highest productivity, uniform product, easier health monitoring. | Higher capital, feed cost, waste‑management challenges. |
| Organic/Certified | Meets specific standards (no antibiotics, access to outdoors, organic feed). | Similar to extensive or semi‑intensive. | Premium market price, consumer appeal. | Strict certification, lower yields, higher labor. |