Although bran is a fine concentrate, it has one of the biggest drawbacks: it is less calcium and more phosphorus (1:8). When long-term use of large amounts of bran or wheat bran alone, the calcium content of the diet is difficult to maintain the nutritional needs of pigs (finishing requirements per day for finishing pigs: 20-35 kg body weight requires 8.40 grams, 35-60 kg of body weight needs 11 grams, 60-90 kg of body weight needs 3.70 grams), it is easy to cause calcium deficiency disease.
In order to avoid the occurrence of this disease, it is best to give the pigs mixed (mixed) feed in places where conditions permit. Where bran is used more, some calcium-rich feeds such as eggshells, stone powder, bone meal, and shell powder should be properly fed into the feed. When this disease occurs, the proportion of feed must first be adjusted.
10-15 eggs per head per day, grind and mix 3 times after feeding, even after serving 2 weeks according to the condition of the appropriate reduction or stop feeding. In addition, intravenous calcium injections or oral cod liver oil can also be used. Intravenous injection is mainly performed with 10% calcium gluconate or calcium chloride injection. It is injected once every other day, each time with an intravenous injection of 20-40 ml. Weak in the use of calcium chloride should be added appropriate amount of glucose injection, mixed slowly after intravenous injection, generally used 3-4 times, severe use 5-6 times.
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