Nutritive composition and evaluation of five food animals

In order to get an evaluation of the nutritive values of five food animals,the nutrient composition was investigated for nauplii of Anemia,enriched Anemia,Calanus sinicus,Acanthomysis brevirostis and Ampithoe valida.The contents of moisture,ash,crude protein,crude fat,amino acids and fatty acids in those food animals were determined by adopting national standard method.The results showed as follows:the contents of moisture,ash,crude fat and crude protein in five food animals were 87.83% to 92.89%,1.69% to 4.12%(fresh),0.55% to 1.36%(fresh)and 4.25% to 8.74%(fresh)respectively.The highest contents of crude fat in nauplii of Anemia,and the highest crude protein content in A.brevirostis were observed in this study.Each food animal contained 20 amino acids,reasonable structure and rich in essential amino acids,which had a decreasing tendency in five food animals of amino acid contents and evaluation as A.brevirostis >nauplii of Anemia >enriched Anemia >C.sinicus >A.valida.All the food animals contained 23 fatty acids,and polyunsaturated fatty acid(PUFA)content was 23.21% to 41.03%, which had a decreasing tendency in in five food animals as C.sinicus >A.brevirostis >A.valida >nauplii of Anemia >enriched Anemia,(P>0.05).EPA and DHA were rarely detected in nauplii of Anemia,but C.sinicus,A.valida and A.brevirostis rich in EPA and DHA.In conclusion,the five food animals are rich in protein and fat,all meet the basic nutritional needs of animal feed,especially C.sinicus and A.brevirostis.