不同乳糖添加量对早期断奶仔猪全价料中营养物质消化率和仔猪生产性能影响的研究

Effect of different inclusion of lactose on nutrients digestibility of piglet diet and piglet performance

将6窝(共58头)1日龄长大哺乳仔猪分三个阶段进行试验,结果表明:7～21日龄阶段,两处理组间营养物质消化率差异不显著(P>0.05),哺乳仔猪的平均日增重差异不显著(P>0.05);22～40日龄阶段,2.0%乳糖组中营养物质消化率极显著低于4.0%乳糖组(P<0.01),4.0%乳糖组仔猪平均日增重显著高于2.0%乳糖组(P<0.05);在41～60日龄阶段,1.0%乳糖组蛋白质、粗纤维、总磷、铜和铁的消化率极显著低于3.0%乳糖组(P<0.01),3.0%乳糖组仔猪平均日增重显著高于1.0%乳糖组(P<0.05)。

58 piglets aged lday were allotted into two treatments to conduct a 3-phrase trial, results showed： from 7^th to 21^st day, there was no significant difference （P〉0.05） between this two treatments in terms of digestibility and average daily gain;from 22na to 40^th day, the digestibility of nutrient of 2.0% lactose-contained diet was significantly （P〈0.01） lower than that of 4.0% lactose-contained diet; the average daily gain of piglets offered 4% lactose was significantly higher（P〈0.05） than that of piglets offered 2% lactose;From 41^st to 60^th day, the digestibility of nutrient of 1.0% lactose-contained diet was significantly （P〈0.01） lower than that of 3.0% lactose-contained diet; the average daily gain of piglets offered 3% lactose was significantly （P〈0.05） higher than that of piglets offered 1% lactose.