1. Fermentation
Although fermentation control is very beneficial, conversely, if the fermentation is uncontrollable, it has an adverse effect on animal health. This is where the liquid feeding system is most questioned. Uncontrolled fermentation often leads to an increase in E. coli, Salmonella, yeast and many other possible pathogens. Therefore, it is generally recommended in the industry to acidify to pH 4 with lactic acid (or other acidulant) and treat with 300 ppm of chlorine dioxide. It should be noted here that each agitation and delivery system has specific procedures for cleaning and disinfection. These cleaning and disinfection guidelines must be strictly adhered to to ensure proper sanitation of the system.
2, dry matter
Another key issue in liquid feeding is the concentration of dry matter in the wet material. According to experience, 3 parts of water should be used for each dry feed, or the dry matter concentration is 25%. Many old-fashioned conveyor systems are unable to deliver denser agitated materials, while less dense wet materials are less desirable due to excessive wastewater production. Studies have shown that it is strongly recommended that piglets in the first week after weaning use a wet material with a dry matter concentration of 25% to ensure adequate nutrient uptake. However, even with a dry matter concentration of 15%, pigs can effectively use wet materials without any performance loss.
3, generate more wastewater
Experience has shown that pigs fed liquid materials produce more sewage – especially when feeding liquid by-products rich in protein and/or salt. The wastewater produced can be said to have advantages and disadvantages. The advantage is that more wastewater makes the slurry less concentrated and thus easier to handle, but the disadvantage is that it costs more to process.
4, the configuration of water
Even if the liquid feed does not contain liquid by-products and normal sodium content, the government has recommended that the pigs be provided with free fresh non-saline water. The amount of water required by a pig varies depending on the weight, growth rate, temperature and health of the individual pig. Although it is said that each pig pen is equipped with at least two drinking fountains, it can effectively prevent the drinker Dussel. However, in a liquid feeding system, it is sufficient to have a separate drinking fountain for every 10-20 pigs.
5, refuse to eat
There are few reports that in the first few days of using this feeding system, even if the feed is not problematic, pigs (especially weaned piglets) who were previously unfamiliar with liquid feed may still suffer from food refusal. Once the refusal occurs, it is usually possible to add some dry feed to the end of the feeder near the trough and add it continuously for several days until the pig begins to eat liquid material. For older pigs, a small amount of dry feed can be added to the trough, which often allows the pig to know the feed. If the pig still refuses to eat, the problem may be in the feed itself and the delivery system.
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