高糖質低タンパク質飼料がマダイ稚魚の成長, 見かけの消化率および肝膵臓の酵素活性に及ぼす影響

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  • 杉田 毅
    Inland Station, National Research Institute of Aquaculture, Fisheries Research Agency
  • 山本 剛史
    Inland Station, National Research Institute of Aquaculture, Fisheries Research Agency
  • 古板 博文
    Inland Station, National Research Institute of Aquaculture, Fisheries Research Agency

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タイトル別名
  • Influence of High Carbohydrate Low Protein Diet on Growth, Apparent Digestibility and Hepatopancreatic Enzyme Activities in Fingerlings of Red Sea Bream Pagrus major

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抄録

The influence of high carbohydrate low protein diets on growth, apparent digestibility and hepatopancreatic enzyme activities were investigated in red sea bream Pagrus major. Fingerlings of 11.4g average body weight were fed for 12 weeks on 2 experimental diets containing different carbohydrate (20 and 28%) and protein (44 and 38%) levels, and on a low carbohydrate (12%) high protein (52%) control diet. Weight gain (WG) of the medium carbohydrate diet (MCD) group was lower than that for the control diet (CTD) group, though protein efficiency ratio (PER) and protein retention of the MCD group were higher than those of the CTD group. Furthermore, WG, feed efficiency, specific growth rate and protein retention for the highest carbohydrate diet group was the lowest among the dietary groups. Hepatopancreatic fructose-1, 6-bisphosphatase, glucose-6-phosphate dehydrogenase and aspartate aminotransferase activities were not different between the dietary groups, and these indicate that the amino acid mobilization as a gluconeogenic substrate was not affected even though the high carbohydrate low protein diets were fed. These findings suggest that fingerling red sea bream cannot effectively utilize a high carbohydrate low protein diet, so that adding a large amount of carbohydrate to the diet cannot spare dietary protein without retarding the growth performance.

収録刊行物

  • 水産増殖

    水産増殖 55 (2), 191-198, 2007

    日本水産増殖学会

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