Abstract
The current research work was undertaken to compare and analyze the body index, nutrient composition, and digestive enzyme activity of Pond loach (Misgurnus anguillicaudatus), large-scale loach (Paramisgurnus dabryanus), and Taiwan loach (Paramisgurnus dabryanus ssp). Viscerosomatic ratio (VR), condition factor, (CF), W/L and H/L were highest in Taiwan loach (P < 0.05). Muscle protein content was highest, whereas lipid content was lowest in pond loach (P < 0.05). The content of total amino acids (TAA), total essential amino acids (EAA), and delicious amino acids (DAA) in the muscle of pond loach was highest (P < 0.05). The content of polyunsaturated fatty acids (PUFA), monounsaturated fatty acids (MUFA) and linoleic acid was highest in pond loach, Taiwan loach and large-scale loach, respectively (P < 0.05). The trypsin activities and amylase activities of the pond loach were significantly higher than those of the large-scale loach and Taiwan loach in the intestine and liver (P < 0.05). These results indicate that the three kinds of loaches are of high nutritional value and have breeding prospects, among which pond loach has higher nutritional value.
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