低蛋白饲粮添加植酸酶和非淀粉多糖酶对生长猪生长性能和养分排泄量的影响  

The effects of environment protecting diet on growth performance and nutrient excretion of growing pigs

作　　者：林维雄 黄剑锋 董志岩[2] 方桂友[2] 

机构地区：[1]福清市协大种猪有限公司,福建福清350313 [2]福建省农业科学院畜牧兽医研究所,福州350013

出　　处：《福建畜牧兽医》2016年第1期3-6,共4页Fujian Journal of Animal Husbandry and Veterinary medicine

基　　金：福清市科技计划项目[融科(2015)16号]资助

摘　　要：试验旨在研究低蛋白质饲粮添加植酸酶和非淀粉多糖(NSP)酶对生长猪生长性能、养分排泄量的影响。54头平均初始体重为(41.92±2.6)kg的杜长大三元杂交猪分为3组,每组3个重复,每个重复6头猪。1组为对照组(饲粮粗蛋白质水平为17.4%),2、3组为试验组,2组在1组基础上,饲粮粗蛋白质水平降至14.3%、总磷水平降低0.1个百分点,添加植酸酶;3组在2组基础上添加NSP酶,试验期38 d。试验结果表明,2组的平均日增重、料重比比1组分别提高7.64%和1.94%(P<0.05),其余各组间差异不显著(P>0.05);粪N浓度2、3组比1组分别降低18.58%、23.01%(P<0.05);粪P浓度2、3组比1组分别降低40.23%、39.08%(P<0.01)。由此可见,将常规饲粮粗蛋白质水平降低3个百分点、总磷水平降低0.1个百分点,并添加植酸酶,能显著提高生长猪平均日增重,显著减少粪氮含量,极显著减少粪磷含量;在此基础上,继续添加NSP酶不影响生长猪生长性能和粪中养分含量。The experiment was conducted to explore the effects of phytase and Non-starch ploysaccharide enzyme（NSPase） on growth performance and nutrients excretion of growing pigs. 54 DLY pigs with initial body weight of（41.92 ±2.6） kg were randomly allocated into 3 groups of 3 replicates with 6 pigs in each replicates. Group 1 was control with diet of crude protein（CP） 17.4%. Group 2 to 3was experiments with low protein diet（CP 14.3%）. Compared to group 1, the CP and total P（TP） level reduced 3% and 0.1 % level respectively in group 2. In group 3, the diets were added with NSPase on the base of group 2. The experiments lasted for 38 days. The results showed as follows： Compared with control, the average daily gain（ADG） and ratio of feed to gain（F/G） in group 2 significantly increased 7.64% and 1.94% respectively（P0.05）, and fecal nitrogen（N） excretion in group 2 to 3 significantly decreased 18.58% and23.0% respectviely（P0.05）, fecal phosphorous（P） excretion in groups 2 to 3 decreased 40.23%, and 39.08% respectively（P0.01）. In conclusion, these results indicated that diets containing phytase with reducing 3% CP and 0.1% TP level on the base of commom CP diet can improve ADG and decrease fecal N（P0.05） and reduce fecal P（P0.01）. But these dietary supplementation of NSPase had no influence on growth performance and fecal nutrients.

关 键 词：低蛋白质饲粮 植酸酶 非淀粉多糖酶 生长性能 生长猪 

分 类 号：S828.5[农业科学—畜牧学]