Application of peeled and expanded soybean meal in pig production

Swelling is a processing technology that oil companies increase to increase oil extraction efficiency. The peeled and expanded soybean meal is a high-protein, high-energy feed material left after soybean oil is leached. After the soybeans are expanded, the oil yield can be increased. At the same time, the activity of the anti-nutritional factors in the soybean meal is reduced, and the digestibility of nutrients is improved.

In the last century, nutritionists thought that the diet of weaned piglets required animal protein, especially fishmeal, which limited the use of soybean meal in piglet diets. Chen Changming et al. (2004) selected 113 piglets that had grown up and weaned (28-day-old) to study the effect of using dehulled soybean meal to replace half or all of the fishmeal in the diet on performance. The trial was divided into 5% imported fishmeal and 2.5 In the imported fishmeal group and no fishmeal group, the 21-day test showed that the average daily gain in the 2.5% imported fishmeal group and the fishmeal-free group was 20% and 23% higher than the 5% imported fishmeal group, respectively, and the daily feed intake increased. At 9.3 and 9.5%, the weight-to-weight ratio decreased by 1.9% and 11.8%.

Yu Lin et al. (2005) showed that fish meal in the diet of 50% or 100% weaned piglets replaced by expanded soybean meal had no adverse effect on average daily gain, average daily feed intake, feed-to-weight ratio, diarrhea rate, and mortality. . Due to the shortage of fish meal resources and the high price, the use of peeled and expanded soybean meal to completely replace the fish meal in the piglet diet will not reduce the piglet production performance, which will inevitably greatly reduce the pig production costs.

Whether the peeled and expanded soybean meal can completely replace the fish meal in the diet of piglets still needs further verification by more extensive experiments.

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