| 植酸酶对仔猪饲粮能量和蛋白质利用率影响的研究 |
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| 引用本文： | 陈文,陈代文,吴秀琼,黄金秀,谭雪梅.植酸酶对仔猪饲粮能量和蛋白质利用率影响的研究[J].四川农业大学学报,2003,21(3):254-257. |
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| 作者姓名： | 陈文 陈代文 吴秀琼 黄金秀 谭雪梅 |
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| 作者单位： | 1. 河南农业大学牧医工程学院
2. 四川农业大学,动物营养研究所,四川,雅安,625014 |
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| 基金项目： | 罗氏(中国)有限公司资助. |
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| 摘 要： | 选用48头长白×荣昌杂交仔猪进行2个2×2因子的代谢试验,每个试验均设2个有效磷水平(0 36%和0 26%)、2个植酸酶添加水平(0FTU/kg、750FTU/kg),共4个处理组,每个处理组设6个重复,每个重复1头仔猪。试验一为高能水平饲粮(DE:14 3MJ/kg),仔猪起始体重9 2kg;试验二为低能水平饲粮(DE:12 8MJ/kg),仔猪起始体重16 9kg,试验期二周。结果表明,在本试验条件下,饲粮中添加750FTU/kg植酸酶,改善蛋白质利用率,但对能量利用率没有明显影响。降低饲粮能量水平则降低能量和蛋白质利用率,降低饲粮有效磷水平则降低蛋白质利用率,低磷饲粮中添加750FTU/kg植酸酶时蛋白质利用率相似于或高于高磷饲粮。
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| 关 键 词： | 植酸酶 仔猪 能量利用率 蛋白质利用率 |
| 文章编号： | 1000-2650(2003)02-0254-04 |
| 修稿时间： | 2003年4月7日 |
Effects of Phytase on the Utilization of Energy and Protein in Corn-soybean Diets for Piglets |
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| Abstract: | Two 2×2 factorial balance experiments by using 48 Landrace×Rongchang piglets are conducted to study the effects of phytase supplementation in the diets on Energy and Protein utilizations. In each experiment, there are 4 treatments with 2 dietary levels of available phosphorus (AP) (036% and 026%) and 2 levels of phytase supplementation (0 and 750?FIU/kg). Each treatment had 6 replicates of 1 pig. Dietary DE is 143?MJ/kg and initial bodyweight of pigs is 92?kg for Exp.1, and 128?MJ/kg, 169?kg for Exp.2. The experiment lasts for 2 weeks. It is concluded 750?FTU/kg phytase supplementation enhances the utilization of dietary protein, but has no effect on energy utilization. Protein utilization for pigs fed 026% AP diets added with 750?FTU/kg phytase are higher than those in the 036% AP diets. Decrease of dietary levels of energy reduces energy and protein utilization. Decrease of dietary levels of AP reduces protein utilization. |
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| Keywords: | phytase piglets energy utilization protein utilization |
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