養魚飼料タンパク源としてのスクラップミ-ルの栄養価

概要

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Protein quality of various kinds of scrap meal, sampled regularly once a month from two meal factories, was compared with that of white fish meal by determining growth, feed effciency, digestibility of protein, PER, and NPU in rainbow trount and carp. The various scrap meal used contained 49-68% crude protein and 12-20% crude lipid. The nutritional quality of scrap meal was found to vary from month to month in manufacturing of the samples, although there was no marked difference in the quality as a protein source between both the fish species. Some of the scrap meal showed high values for PER and NPU compared to the white fish meal in both rainbow trount and carp, indicating the availability of these meals as a protein source in fish diets. These scrap meals were found to be high in content of crude protein and low in content of crude ash and moisture, together with a high digestibility of protein. It was also found that it was possible to substitute 10-20% of white fish meal in fish diets with the scrap meal of the lowest quality.
日本水産學會の論文