Basic knowledge of soybean meal

Soybean meal is soybean oil after extraction of a by-product, according to the different methods of extraction, can be divided into a dip soybean meal and two dip soybean meal. One of the extraction method to extract soybean oil by-products for a dip soybean meal, and first to press the oil, and then after the dip extracted oil by-products known as two dip soybean meal. In the whole process, the temperature control is extremely important, the temperature is too high will affect the protein content, which is directly related to the quality and use of soybean meal; temperature is too low will increase the moisture content of soybean meal, and high moisture content will affect the quality of soybean meal during the storage period. A dip of soybean meal production process is more advanced, high protein content, is the domestic spot market circulation of the main varieties.

In accordance with national standards, soybean meal is divided into three grades, one soybean meal, two soybean meal and three soybean meal. From the current domestic soybean meal spot market situation, in 1999 the total domestic soybean meal processing (excluding imports of soybean meal) of about 10 million tons, of which about 20% of the first-class soybean meal, second-class soybean meal accounted for about 75% of the third-class soybean meal accounted for about 5% of the three grades of soybean meal in circulation, mainly associated with the quality of soybeans. From the different grades of soybean meal market demand, a few large domestic feed mills with the strength to use a level of soybean meal, the majority of feed mills are now mainly used in the second level of soybean meal (protein content of 43%), the second level of soybean meal is still the mainstream domestic soybean meal consumption market, three levels of soybean meal has been rarely used.

Soybean meal is generally irregularly fragmented, light yellow to light brown in color, taste with roasted soybean flavor. The main components of soybean meal are: protein 40% to 48%, lysine 2.5% to 3.0%, tryptophan 0.6% to 0.7%, methionine 0.5% to 0.7%.

Soybean meal is cottonseed meal, peanut meal, canola meal and other 12 kinds of animal and plant oil meal feed products in the largest production, the most widely used one. As a high protein, soybean meal is a major ingredient in the production of livestock and poultry feed, and can also be used in the production of pastry foods, health foods, and cosmetics and antimicrobial ingredients.

Approximately 85% of soybean meal is used in poultry and swine feeding, and it contains a wide range of amino acids suitable for the nutritional needs of poultry and swine. Experiments have shown that the amino acids contained in soybean meal alone are sufficient to balance the nutrition of poultry and swine without the addition of additional animal protein, thus promoting the absorption of nutrients in livestock. Soybean meal is utilized to the maximum extent in poultry and swine feeding. Cottonseed meal and peanut meal are considered for use only when their unit protein cost is much lower than that of soybean meal. In fact, soybean meal has become the benchmark product against which other protein sources are compared.

In dairy cattle, flavorful, easily digestible soybean meal can improve milk production. Soybean meal is also one of the most important oilseed meals in beef cattle feeding. Soybean meal is also used to make pet food. A simple mix of corn and soybean meal has the same value as a food made with high animal protein. In recent years, soybean meal has also been widely used in aquaculture. Soybean meal contains a variety of amino acids can fully meet the special needs of fish for amino acids.

Use of Soybean Meal in Feeding (%) Poultry 52 Pigs 29 Cattle 7 Dairy Cattle 6 Pets 2 Food Industry 2 Other 2 Total 100