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Your Position :Home->Past Journals Catalog->2011年48 No.4

Protein nutrition evaluation of rangeland grasshoppers in the Qilian Mountain
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Key Words:protein nutritional resource, nutritional value, feed, poultry
Abstract:

      In order to investigate the nutritional value of grassland grasshoppers as poultry feed, several different species of grasshoppers were collected from grassland and their protein content analyzed according to international standards. The results indicate that grasshoppers are rich in protein, the content of which varied from 62.4 percent in Angaracris rhodopa to 67.3 percent in Oedalius asiaticus. There were 18 kinds of amino acids, accounting for 30.3%-34.2% DM of the dietary requirements of poultry. The amino acid profile of grasshopper protein was superior to that recommended by the FAO in 1973 The amino acid scores (AAS), chemical scores (CS), essential amino acid index (EAAI) and ratio coefficient (RC) of most protein in grasshoppers was higher, or similar, to those of common poultry feeds, such as fish and beans. However, the CS and AAS of methionine, cystine and tryptophan in grasshopper protein were lower than those of fish and beans, indicating that these amino acids are limiting in grasshopper protein. In conclusion, grasshoppers are a good protein source for poultry feed that could play an increasing role in the poultry industry.

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