数種配合飼料がウシエビの成長,飼料効率,及び生残率に及ぼす効果〔英文〕
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概要
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The effects of salinity of rearing water and chemical composition of the diet on growth, feed efficiency, and survival of prawn Penaeus monodon were investigated in a feeding experiment. Five compounded diets and the soft parts of clam Venerupis philippinarum were used as the test diets.Prawn maintained in 19-21‰ brackish water had better growth and survival than prawn reared in 34-35‰ sea water. However, there was little difference in feed efficiency between these treatments.The highest growth and feed efficiency were observed in the group fed with the soft parts of the clam. The soft parts were rich in polar lipids and sterols, and in essential amino acids, with high ratios of methionine and arginine to total essential amino acid content. All groups receiving the compounded diets showed lower growth and feed efficiency. However, the compounded diets which contained polar lipids and cholesterol at higher levels, and which had a higher percentage of total essential amino acid content, produced better growth, feed efficiency, and survival.From these findings, it is suggested that polar lipids, sterols, and the content and/or balance of the essential amino acids are major dietary factors relating to the nutritional quality of the diet for P. monodon.
- 社団法人 日本水産学会の論文