| 植酸酶替代磷酸二氢钙对异育银鲫生长的影响 |
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| 引用本文： | 陈静,李婧慧,刘训猛,熊沈学.植酸酶替代磷酸二氢钙对异育银鲫生长的影响[J].安徽农业科学,2014(24):8185-8187. |
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| 作者姓名： | 陈静 李婧慧 刘训猛 熊沈学 |
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| 作者单位： | 江苏省水产技术推广站,江苏南京,210036;江苏省海涂研究中心,江苏南京,210036;无锡市水产畜牧技术推广总站,江苏无锡,214023 |
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| 摘 要： | 为了研究在饲料中用植酸酶替代不同水平的磷酸二氢钙（Ca（H2PO4）2）对异育银鲫生长及肠道排空速度的影响,以2.2g左右的异育银鲫为试验对象,用植酸酶分别替代饲料中0％（对照组Ⅰ）、20％（试验组Ⅱ）、40％（试验组Ⅲ）和60％（试验组Ⅳ）的Ca（H2PO4）2,对应的植酸酶梯度为O、500、1 000和1 500 U/kg,饲养56 d.结果表明,饲料中用植酸酶替代Ca（H2PO4）2后,对各试验组异育银鲫的生长无显著影响（P＞0.05）;添加500、1 000和1 500 U/kg植酸酶能提高异育银鲫肠道食糜排空率（P＜0.05）.因此,从生产上来看,异育银鲫饲料中可用植酸酶替代一定量的Ca（H2PO4）2,植酸酶的添加量以1 000 U/kg饲料为宜.
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| 关 键 词： | 异育银鲫 植酸酶 Ca(H2PO4)2 生长 |
Effects of Replacement Monocalcium Phosphate of Phytase on Growth of Carassais auratus gibelio |
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| Institution: | CHEN Jing,LI Jing-hui LIU Xun-meng,XIONG Shen-xue(Jiangsu Province Aquaculture Technology Extension Station, Nanjing, Jiangsu 210036;Wuxi Aquaculture and Husbandry Technology Extension Station, Wuxi, Jiangsu 214023) |
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| Abstract: | The experiment was conducted to evaluate the effects of phytase on growth performances and intestinal emptying velocity of gibel carp （Carassais auratus gibelio）.The fish were randomly divided into four groups：a control group,which was fed a basic diet,and four treated groups fed with the basic diet supplemented with 500,1 000,1 500 U/kg phytase for eight weeks.The results showed that the replacement Ca（H2PO4）2 of phytase had no significant effect on growth performances of gibel carp （P ＞ 0.05）.There was no significant effect on growth performances of gibel carp between the treatment group and control group （P ＞ 0.05）.Meanwhile,the groups supplemented with 500,1 000,1 500 U/kg phytase in the diet significantly increased the intestinal emptying velocity of gibel carp （P ＜0.05） compared with the control.The present study suggests that feed supplementation with phytase has the potential to take replace of the content of calcium dihydrogen phosphate in the diet to some degree.The optimum dietary phytase requirement of gibel carp was estimated to be 1 000 U/kg feed. |
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| Keywords: | Carassais auratus gibelio Phytase Ca（H2PO4） 2 Growth |
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