Nutrient Analysis Of Corn, Soybean Meal, Cottonseed Meal, Corn Gluten Meal, And Rapeseed Meal

The experiment was to analyze the nutrient composition of corn, soybean meal, cotton meal, corn gluten, and rapeseed meal from January 2005 to December 2009. The results showed that: (1) Moisture of corn showed the constant trend that the lowest value is ranged from 12.9% to 13.9% in June to September. However, district influences the moisture of corn because of the difference in harvest season among Shaanxi, Gansu, and Xinjiang province. (2) For the soybean meal, crude ash content declined gradually, but the moisture increased. There are differences in solution and content of protein in soybean meal, which is ranged from 2% to 7% in content at different batches. Amino acid contents have similar changes with crude protein. (3) Climate and season affected the cottonseed meal quality especially crude fiber content in 2005 to 2007. The content of fiber in cottonseed meal produced in the second half year of 2006 and the whole year of 2007 exceed the standard of 13%. (4) For the corn gluten meal, lutein content increased in January to June and then declined in July to November. Vomitoxin, aflatoxin, and zearalenone content in corn gluten meal increased from July to September and then declined. (5) Crude protein content in rapeseed meal is low, which ranged from 34% to 36% in Northwest of China. Crude ash content is more than 8%. Lysine content is 1.30%, which is higher than the value in the national database.