动物营养学报 >

2015 , Vol. 27 >Issue 10: 3241 - 3248

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.10.032

研究简报 Short Communications

低磷饲粮添加植酸酶对断奶仔猪生长性能、养分表观消化率和骨骼发育的影响

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  • 四川农业大学动物营养研究所, 动物抗病营养教育部重点实验室, 成都 611130
张峻豪(1990—),男,四川巴中人,硕士研究生,从事猪的营养研究。E-mail:www.zhangjunhao@163.com

收稿日期: 2015-05-12

  网络出版日期: 2015-10-15

基金资助

北京挑战生物技术有限公司资助

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Effects of Phytase Supplementation in a Low-Phosphorus Diet on Growth Performance, Nutrient Apparent Digestibility and Bone Development of Weaned Piglets

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  • Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China

Received date: 2015-05-12

  Online published: 2015-10-15

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摘要

本试验旨在探究低磷(P)饲粮中不同添加量的植酸酶对断奶仔猪生长性能、养分表观消化率和骨骼发育的影响。试验选用35头21日龄断奶、初始均重为(7.62±0.44) kg的健康"杜×长×大"三元杂交仔猪,随机分为5组,每组7个重复,每个重复1头猪。对照组饲喂基础饲粮,试验组在低磷饲粮[前期:钙(Ca) 5.1 g/kg,有效磷(AP) 2.0 g/kg;后期:钙4.6 g/kg,有效磷1.6 g/kg]中分别添加0、250、500、1 000 FTU/kg植酸酶,试验期21 d。结果表明:1)与对照组相比,添加1 000 FTU/kg植酸酶显著提高了断奶仔猪第15~21天和第1~21天平均日采食量(ADFI)和平均日增重(ADG)(P<0.05),但对料重比(F/G)无显著影响(P>0.05)。2)与对照组及低磷饲粮组相比,添加植酸酶显著提高了干物质(DM)、有机物(OM)、粗蛋白质(CP)、钙、磷和总能(GE)的表观消化率(P<0.05),且1 000 FTU/kg各项指标优于其他试验组。3)与对照组相比,添加1 000 FTU/kg植酸酶显著提高了第3掌骨的骨骼长度(P<0.05)。由此可知,玉米-豆粕饲粮中添加植酸酶能够显著改善断奶仔猪的生长性能,提高养分表观消化率,促进仔猪骨骼的发育,节约饲料经济成本;在本试验条件下,21日龄断奶仔猪饲喂有效磷1.6~2.0 g/kg的玉米-豆粕型饲粮时,植酸酶适宜添加量为1 000 FTU/kg。

关键词： 植酸酶; 低磷饲粮; 生长性能; 养分表观消化率; 骨骼发育

本文引用格式

张峻豪, 罗钧秋, 余冰, 何军, 黄志清, 毛湘冰, 郑萍, 虞洁, 余贵香, 刘杰, 王曲圆, 王慧芬, 曾珠, 陈代文 . 低磷饲粮添加植酸酶对断奶仔猪生长性能、养分表观消化率和骨骼发育的影响[J]. 动物营养学报, 2015 , 27(10) : 3241 -3248 . DOI: 10.3969/j.issn.1006-267x.2015.10.032

Abstract

This study was conducted to investigate the effects of phytase supplementation in a low-phosphorus (P) diet on growth performance, nutrient apparent digestibility and bone development of weaned piglets.Thirty-five healthy crossbred piglets (Duroc×Landrace×Large) with an initial average body weight of (7.62±0.44) kg, which were weaned at age of 21 days, were randomly allotted to 5 groups with 7 replicates per group and 1 piglet per replicate.The piglets in control group was fed a basal diet only, and the piglets in experimental groups were fed the low-P diet [pre-starter: calcium (Ca) 5.1 g/kg, available phosphorus (AP) 2.0 g/kg; starter: Ca 4.6 g/kg, AP 1.6 g/kg] supplemented with 0, 250, 500, 1 000 FTU/kg phytase, respecatively.The whole trial lasted for 21 days.The results showed as follows: 1) compared with control group, supplementation with 1 000 FTU/kg phytase significantly increased average daily feed intake and average daily gain of weaned piglets from day 15 to day 21 and day 1 to day 21 (P<0.05), but there was no significantly affect on feed to gain ratio (P>0.05).2) Compared with control group and low-P diet group, phytase supplementation significantly increased the apparent digestibility of dry matter, organic matter, crude protein, Ca, P and total energy (P<0.05), with 1 000 FTU/kg phytase supplementation was the highest.3) Compared with control group, supplemented with 1 000 FTU/kg phytase significantly increased the length of third metacarpal bone (P<0.05).In conclusion, supplementation of phytase in corn-soybean meal low-P diet (AP 1.6 to 2.0 g/kg) can improve the apparent digestibility of nutrients, enhance the growth performance and bone development of weaned piglets, decrease feed economic costs, and the optimum supplementary amount of phytase is 1 000 FTU/kg.

Key words： phytase; low-P diets; growth performance; nutrient apparent digestibility; bone development

参考文献

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