%0 Journal Article
%T EFFECTS OF REPLACING FISH MEAL WITH SOYBEAN PROTEIN ISOLATE ON GROWTH PERFORMANCE AND NITROGEN AND PHOSPHORUS EXCRETION OF RAINBOW TROUT (ONCORHYNCHUS MYKISS)<br>大豆分离蛋白替代鱼粉对虹鳟生长性能及氮磷排泄的影响(英文)
%A WANG Yu-Yu
%A YANG Yu-Hong
%A WANG Feng
%A WANG Lei
%A WANG Rui-Xia
%A LU Yang
%A <br>王裕玉
%A 杨雨虹
%A 王枫
%A 王雷
%A 王瑞霞
%A 陆阳
%J 水生生物学报
%D 2011
%I 
%X A 90-day feeding trial was conducted in indoor culture system to evaluate the effects of replacing fish meal with phytase- pretreated soybean protein isolate (PP-SPI) in feeds for juvenile Rainbow trout (Oncorhynchus mykiss). The fish initial body weight (4.86±0.02) g] were fed six isonitrogenous and isocaloric feeds (crude protein, 44.97%; crude lipid, 13.42%). The diets were formulated to produce diets in which 0, 200, 400, 600, 800 and 1000 g/kg of protein from fish meal were replaced with that from PP-SPI. SPI was pretreated by phytase at the level of 1000 U/kg. The results showed that the specific growth rate (SGR) increased significantly when the PP-SPI replacement level from 0 to 40%, and there was a significant decrease for PP-SPI replacement level from 40% to 100%. Weight gain and protein efficiency ratio (PER) showed the same trend as in the SGR. The minimum value (1.10) of FCR was at 40% re-placement (S40) of fish meal with PP-SPI (P<0.05), and there was a significant increase for PP-SPI replacement level from 40% to 100%. P excretion significantly decreased as the proportion of PP-SPI replacement in the diet increased. However, efficiency of P retention significantly increased with increasing PP-SPI level (P<0.05). The N excretion de-creased with increase of PP-SPI replacement level from 0% to 40%, then increased with the increase of PP-SPI replace-ment level from 40% to 100%. The N retention increased with increasing levels of PP-SPI replacement to 40%, while decreased with increasing levels of PP-SPI replacement from 40% to 100%. The results of the present study showed that 40% of fish meal could be replaced by PP-SPI in diets of juvenile rainbow trout with maximum weight gain or feed effi-ciency.
%K Rainbow trout (Oncorhynchus mykiss)
%K Soybean protein isolate
%K Fish meal
%K Pretreatment
%K Nitrogen and phosphorus excretion<br>虹鳟
%K 大豆分离蛋白
%K 鱼粉
%K 预处理
%K 氮磷排泄
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=256651267D5D2E4520A7707D05E98747&aid=FDAE0ED1FD03C90256EFCE0B49A97F88&yid=9377ED8094509821&vid=6209D9E8050195F5&iid=CA4FD0336C81A37A&sid=03F1579EF92A5A32&eid=DDD31293A7C7D057&journal_id=1000-3207&journal_name=水生生物学报&referenced_num=1&reference_num=36