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211.
Takeshi Yamamoto Kazuhisa Teruya Takashi Hara Hiroto Hokazono Hiroshi Hashimoto Nobuhiro Suzuki Yasuro Iwashita Hiroyuki Matsunari Hirofumi Furuita Keiichi Mushiake 《Fisheries Science》2008,74(5):1096-1108
To improve the nutritional quality of live foods and dry feeds ordinarily used for the seed production of amberjack Seriola dumerili, the nutrient contents of rotifers, Artemia nauplii and commercial feeds used in two larval production stations were evaluated. For comparison of the nutrient contents,
artificially produced larvae, wild-caught juveniles and wild zooplankton samples were also analyzed. The proportions of 22∶6n-3
in the polar lipid of the cultured larvae increased by feeding the dry feeds. The taurine contents of the cultured larvae
reflected the contents of their foods (rotifers<dry feed<Artemia nauplii). The taurine content and the proportion of 22∶6n-3 in Acartia spp. were higher than in foods fed to the larvae. These parameters in the wild juveniles were higher than the cultured ones.
The A/E ratios [(each essential amino acid/total essential amino acids)×1000] of the total amino acids of the live foods and
dry feeds were similar to those of the cultured larvae, except for the lower ratios of histidine, arginine, threonine and
lysine in the live foods. The mucosal folds of the intestine of the cultured larvae did not show typical signs of dietary
phospholipid deficiency. These results suggest that requirements of nutrients such as 22∶6n-3 and taurine should be determined
for mass production of amberjack seeds. 相似文献
212.
Takeshi Yamamoto Takanobu Goto Yuta Kine Yuta Endo Yuichi Kitaoka Tsuyoshi Sugita Hirofumi Furuita Yasuro Iwashita & Nobuhiro Suzuki 《Aquaculture Research》2008,39(9):986-994
A feeding experiment was conducted to examine the effect of a supplemental ethanol extract from a defatted soybean meal on the biliary bile status and intestinal conditions of rainbow trout Oncorhynchus mykiss . A semi-purified control diet based on casein (Cont) and three diets supplemented with the extract (ES), bovine bile salts (BS) and their combination (ESBS) were fed to trout (10 g) for 6 weeks. The growth, feed efficiency ratio, fat digestibility and gallbladder- and hepato-somatic indices of fish fed diet ES decreased. Compared with this group, these parameters were improved in fish fed diet ESBS. The total biliary bile salt content was the lowest in fish fed diet ES and this group had a high proportion of chenodeoxycholyltaurine. The inclusion of the bile salts to diet ES (diet ESBS) increased the total biliary bile salt content. A similar trend was observed in the bile salt concentration of intestinal digesta. Although morphological changes occurred in epithelial cells of the distal intestine of fish fed diet ES, the histological features of fish fed diet ESBS were similar to those of fish fed diet Cont. These results indicate that alcohol-soluble substances of soybean meal cause physiological changes in the biliary bile and intestine of rainbow trout. 相似文献