动物营养学报Issue(3)：812-818,7.DOI:10.3969/j.issn.1006-267x.2014.03.034
团头鲂饲料磷需要量
Phosphorus Requirement of Bluntnose Black Bream
摘要
Abstract
In order to estimate the dietary phosphorus requirement of bluntnose black bream ( Megalobrama amblycephala) , the effects of dietary phosphorus level on growth performance, body composition and contents of phosphorus in different tissues of bluntnose black bream were studied. A total of 480 bluntnose black breams with an average initial body weight of 35 g were randomly divided into 6 groups with 4 replicates per group and 20 bluntnose black bream per replicate. The experiment lasted for 85 days. Using semi-purified diet, six ex-perimental diets containing different phosphorus levels (3. 8, 6. 9, 10. 1, 13. 2, 16. 4 and 19. 5 g/kg) were formulated with Ca( H2 PO4 ) 2 as the phosphorus source. The results showed as follows: 1 ) weight gain rate was significantly increased in experimental group with 13 . 2 g/kg phosphorus compared with that in the other groups (P<0. 05);2) the survival rate, contents of crude protein and ether extract in whole body were not significantly affected by dietary phosphorus level ( P>0 . 05 ) , and the ash content in experimental group with 3 . 8 g/kg phosphorus was significantly lower than that in other groups ( P<0 . 05 );3 ) with dietary phosphor-us level increasing, phosphorus content in whole body, vertebra, opercle and scale was significantly increased (P<0. 05). Dietary phosphorus level had significant effects on phosphorus content in whole body, muscle, vertebra, opercle and scale (P <0. 05). In conclusion, under the conditions of this experiment, not only growth performance, but also contents of phosphorus in whole body and tissues are affected by dietary phos-phorus level. Quadratic model analysis results show that the optimum dietary phosphorus requirements for max-imum growth of bluntnose black bream is 12. 98~13. 18 g/kg.关键词
团头鲂/磷/需要量/生长Key words
bluntnose black bream/phosphorus/requirement/growth分类
农业科技引用本文复制引用
刘汉超,叶元土,蔡春芳,姚林杰,陈科全,黄雨薇,龚志..团头鲂饲料磷需要量[J].动物营养学报,2014,(3):812-818,7.基金项目
公益性行业(农业)科研专项(201003020) （农业）
