Abstract: This experiment was designed to study the nutritional composition and gossypol content of cottonseed meal(CSM) and cottonseed protein(CSP) produced from different areas in China. 5 of CSM and 5 kinds of CSP were collected from different areas in China,and then their nutrient composition and gossypol content were determined.The result showed that: the percentage of crude protein(CP), ether extract(EE), acid detergent fiber(ADF)in CSM were 39. 28%,0. 28%,21. 60%,respectively. the percentage of CP,EE,ADF in CSP were 51. 96%,0. 75%,13. 29%,respectively. In all the nutritional composition,the content of EE and calcium(Ca) were the two highest,while the content of CP was the lowest. And the free gossypol(FG) content of CSM and CSP were 1021. 14mg /kg and 687. 75 mg /kg,respectively. These results indicated that: the content of CP was stable while the content of EE and Ca had a large variation in the CSM and CSP from different areas; the FG content of CSM was higher.

Key words: Cottonseed meal, Cottonseed protein, Nutritional composition, Gossypol

CLC Number: 

• S562