What are the key points for summer management of deep-litter pig farming?

1. Strengthen ventilation and use forced exhaust
2. Use the concrete feeding platform in the pen and spray water for cooling
3. Reduce the litter thickness by 20 cm in summer.
4. Form three major zones in the litter area: the manure zone (also the concentrated fermentation zone), the water vapor evaporation zone, and the pig resting zone
5. Use the pen we designed to give the pigs water baths.
6. Add some measures to pig houses with good conditions (negative pressure exhaust, drip water, water curtains, etc.)
7. Turn the litter as little as possible in summer

When using deep-litter technology to raise pigs in summer, the following points should be noted:

1. To achieve no mosquitoes or flies and no odor in summer, manure treatment can use high-efficiency aerobic fermentation or deep-bed anaerobic fermentation. The fermentation bed temperature can reach 40-50°C, which can kill bacteria and pests in the manure, keeping it clean and hygienic.

2. If there are maggots in the fermentation bed, promptly turn and bury the manure where maggots exist to a depth of 30-40 cm. The maggots will disappear within half a day to one day under high-temperature fermentation.

3. If flies are present in the pen, handle them with conventional manual methods: such as fly paper, fly-killing lamps, etc.

4. Use screens to prevent flies from entering the pen.

5. Clean and tidy the feeding platform and feed trough in the pig house promptly.

Standards for checking whether the fermentation bed has been successfully made:

1. The composition of the litter must be reasonable: the ratio of sawdust to rice husks is half and half.

2. Moisture control must be moderate: 40-50%

3. Fermentation temperature is the most important: the fermentation bed must undergo fermentation maturation treatment (that is, fermentation maturation technology) before pigs can be put in for raising. The purpose of fermentation maturation treatment is, first, to multiply dominant bacterial strains, and second, to kill most microorganisms in the litter raw materials that are unfavorable to pig production (including the vast majority of pathogenic microorganisms and molds). The temperature of the properly made litter must rise to about 40-50°C on the second day, rise to 60-70°C on the 3rd-4th day, and return to 40-50°C on the 5th-7th day to achieve the effect of fermentation and decomposition.