Common problems in the fermentation bed in winter include: strong ammonia odor, high humidity, low litter temperature, and gasketing. The solution is as follows:
1, increase the thickness of the dunnage
In the northeastern China, due to the cold weather, the fermentation bed loses a lot of heat and there is no guarantee of a certain thickness. The fermentation bed is not operating well. A minimum thickness of 80 cm is recommended for a fermentation bed made solely of sawdust. A 100 cm thick fermentation bed made of sawdust mixed with other litter is recommended. In fact, the thickness of the litter is a key factor in the production of a fermentation bed. You will not be able to significantly reduce the thickness of the fermentation bed because you have chosen a special starter. Of course, if the condition of the existing pig house is limited, you have to make a 60 cm thick fermentation bed. There is often a need to supplement a large amount of litter, it is more suitable for the southern region. In the north, especially northeast, it is absolutely impossible.
2, reduce the breeding density
Since the common problems in winter piggery are insufficient ventilation, low temperature, and high humidity, it is more practical to adjust the rearing density of the fermentation bed from 1.2-1.5 square meters per head to 1.8-2.0 square meters per head.
3, the light of the fermentation bed is very important
The litter surface of the fermentation bed should be designed to be sunny, and it is important to use the radiant heat of the sun to accelerate the evaporation of the moisture on the litter surface. Do not underestimate the power of solar radiation.
4, keep loose material, breathable properties
Only by maintaining a certain space structure, the litter can easily enter the gap of litter, and normal fermentation can continue. The physical properties of the fresh litter after a period of time will change, and the litter will tend to be hardened, sticky, and have reduced air permeability. This is a normal phenomenon. This is due to trampling and chemical decomposition of the pig. It will not change this biological process because of the use of a certain starter. Therefore, the litter on the fermentation bed must be turned. Of course, pigs will also carry out some arching work, but human turnover is essential.
5, keep litter dry
This is a key factor in the continuous operation of the fermentation bed. By strengthening the ventilation of the pig house, the pig house should be kept warm and cold, supplemented with litter, and the thickness of the litter should be increased to reduce the stocking density, so as to maintain the dryness of the litter.
6, regular change padding
Although this kind of statement sounds appealing, many people use the fermentation bed to raise pigs. In fact, this statement is an advertising language and it is a lie. The fermentation bed is not unclear, but the pig's excreta is converted into microorganisms and metabolites, mixed with litter, or need to be regularly removed. Under normal circumstances, the replacement of litter for three years, according to the pig's breeding density and use of time can be added or subtracted.
The excrement produced during the 180-day fattening period of a finishing pig is converted and stored by microorganisms, equivalent to a value of 150 yuan in chemical fertilizers. How high is the economic value of this litter? The scientific basis for this can be referred to. -- Australian standard technology data for pig breeding beds, one of the reasons why many foreign producers use pigs in fermentation beds is because of the value-added effect of excreta. It is not true that people who have little knowledge of the fermentation bed are not propagating the excrement and never make a circle.
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