Tofu residue is a by-product of tofu processing. It is rich in nutrients, including crude protein content of up to 25% to 30%, nitrogen-free extract content of up to 30% to 35%, and crude fat content. The content can reach 8%~10%, and the calcium content can reach 0.8%~1%. It is one of the high-quality and cheap feeds for raising cattle. However, there are many problems that need to be paid attention to when raising cattle with tofu residue. If the feeding method is improper, it will not only be difficult to achieve the feeding effect, but may also have adverse effects, causing cattle malnutrition, diarrhea, poisoning and even death. The editor below will introduce in detail the issues that should be paid attention to when raising cattle with tofu residue. I hope it can be of help to everyone!

1. Should tofu residue be fed raw or cooked?

Tofu residue contains anti-trypsin, uremic enzyme, saponin, goiter and other anti-nutritional factors. Anti-trypsin will hinder the absorption of soy protein by trypsin in cattle and easily Causes diarrhea, especially in calves. Feeding large amounts of raw tofu residue for a long time can also cause metabolic disorders in cattle. If a cow has diarrhea all the time, it will inevitably affect its normal growth and even cause fat loss.

Therefore, tofu residue should be heated and cooked (heat treated) before being used to feed cattle, so that the antitrypsin in it will lose activity. However, the heat treatment must be appropriate (for example, heated to 100°C for 3 to 5 Minutes will do), overheating or taking too long will denature the protein in the tofu residue and reduce its nutritional value. In addition to being heated and cooked, tofu residue can also be fermented and then used to feed cattle.

2. How to ferment tofu residue?

After the fermentation of tofu dregs, it can not only inactivate antitrypsin, but also be more conducive to long-term storage. The specific method is as follows: 70% tofu dregs, 15% corn flour, 15% wheat bran, and mix the water with Control it between 50% and 70%, mix the three raw materials evenly, and finally put them into a fermentation tank (cellar) or a sealed bag, compact and seal.

Generally after 2 to 10 days of fermentation (depending on the temperature), when a slight wine or sour aroma wafts out, it can be used to feed cattle. When starting to use, it is recommended that you remove the top layer of floating objects. Each time you take out the material, you must be quick and seal it tightly again to avoid rot and deterioration. Under strict sealing conditions, tofu residue can be stored for 3 to 6 months without problems.