Palmegiano G B, Costanzo M T, Daprà F, Gai F, Galletta M G, Maricchiolo G, Micale V, Peiretti P G, Genovese L
Institute of Science of Food Production, National Research Council, Grugliasco (TO), Italy.
J Anim Physiol Anim Nutr (Berl). 2007 Jun;91(5-6):235-9. doi: 10.1111/j.1439-0396.2007.00697.x.
The aim of this study was to evaluate the performances and the flesh quality of Pagellus bogaraveo fed with diets containing rice protein concentrate [RPC, 70% crude protein (CP) and 10% ether extract]. Three isoproteic and isoenergetic (CP 47%, 22 MJ/kg DM) diets were formulated with an increasing level of RPC: 0%, 20% and 35%. The fish (mean weight 75 g) from the Messina Straits were randomly distributed in 12 tanks (3 diets x 4 replications, 10 fish/tank). The daily ratio (1.5% of the fish biomass) was updated every 15 days. Biomass gain showed an opposite trend to the RPC diet inclusion. No differences appeared in the somatic indexes. Differences appeared between fatty acid profiles of the dorsal muscle. Fatty acid of series n-6 increased and fatty acid of series n-3 decreased in fillets of fish fed with increasing levels of RPC. The inclusion of RPC in the diets, as a partial replacement of fish meal (20%), is possible without affecting the growth performance and fillet quality.
本研究的目的是评估用含大米浓缩蛋白[RPC，70%粗蛋白(CP)和10%乙醚提取物]的饲料喂养的博氏真鲷的生长性能和肉质。配制了三种等蛋白和等能量(CP 47%，22 MJ/kg干物质)的饲料，RPC水平逐渐增加：0%、20%和35%。来自墨西拿海峡的鱼(平均体重75克)被随机分配到12个水箱中(3种饲料×4次重复，10条鱼/水箱)。每日投喂量(鱼生物量的1.5%)每15天更新一次。生物量增加与RPC饲料添加量呈相反趋势。体指数没有差异。背肌脂肪酸谱存在差异。随着RPC饲料添加量的增加，鱼片中n-6系列脂肪酸增加，n-3系列脂肪酸减少。在饲料中添加RPC作为鱼粉(20%)的部分替代品是可行的，且不会影响生长性能和鱼片质量。
