There are several effective techniques for rapidly fattening commercial meat rabbits, many of which overlap with general rabbit fattening practices. These methods include the following key strategies:
1. **Breeding High-Quality Hybrids**: Selecting superior hybrid breeds or specific lines is essential for good productivity. Degraded or inbred rabbits tend to perform poorly. Using high-quality hybrids like New Zealand x California, Flanders x New Zealand, or Saibei x New Zealand has shown excellent results. In recent years, imported meat rabbit breeds from abroad have also demonstrated better performance than local varieties.
2. **Managing Weaning Weight**: Just like in pig farming, a slight difference in birth weight can significantly impact growth. The weaning weight is crucial for survival and growth later on. Rabbits should weigh over 600 grams by day 30, which requires proper maternal care, feeding management, and careful adjustment of litter size.
3. **Handling the Weaning Transition**: Three main transitions need attention during weaning: environmental, feed, and feeding routine. Keeping rabbits in their original cages, maintaining consistent feed types, and keeping the same feeding schedule helps reduce stress and supports smooth adaptation.
4. **Direct Fattening Without Stages**: Unlike traditional methods, it's more efficient to feed rabbits full-portion pellets throughout the fattening period. This approach avoids unnecessary delays and promotes faster growth.
5. **Male Rabbits Not Castrated**: Since male rabbits reach sexual maturity at around 3.5–4 months, and the fattening period usually ends before that, castration is unnecessary. It can cause stress and slow recovery. A small amount of male hormones can actually improve growth rate and lean meat percentage.
6. **Using Advanced Feed Additives**: Alongside basic nutrients, high-tech additives such as rare earths, cyadox, bacitracin zinc, and enzymes can greatly enhance growth, digestion, and disease resistance. Products like Tuo Le, developed by Hebei Agricultural University, are specifically designed for rabbits and have been widely used across China.
7. **Controlling the Environment**: Temperature, humidity, stocking density, ventilation, and lighting all play a major role in successful fattening. Ideal conditions are around 25°C, with humidity between 55% and 65%. Proper ventilation is crucial to prevent disease, and low light levels can help reduce activity and promote growth.
8. **Pelleted Feed Over Powder**: Experiments show that pelleted feed increases weight gain by 8–13% and improves feed efficiency. For breeds like Rex rabbits, green feed supplementation may not be necessary if pelleted feed is of high quality.
9. **Disease Prevention**: Common diseases during fattening include coccidiosis, diarrhea, and respiratory issues. Preventive measures and hygiene practices are essential to maintain health and performance.
10. **Timely Slaughter**: Rabbits grow fastest before reaching sexual maturity. To ensure optimal meat quality and profitability, they should be slaughtered before three months of age. Delaying slaughter leads to lower meat yield and reduced economic returns.
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