摘要
为了评定乳糖对不同阶段仔猪采食量和生产性能的影响,将6窝58头1日龄长大哺乳仔猪随机分到2个处理组,组间平均体重差异不显著,每个处理组设3个重复.试验猪分3个阶段进行,每个阶段设2个乳糖添加水平,从第7日龄起对供试猪进行补料,第22日龄早晨断奶,试验期共54 d,各组日粮营养水平相近.试验结果表明:在7～21日龄阶段,2.5%乳糖组仔猪的平均日增重和4.5%乳糖组仔猪的平均日增重差异不显著(P＞0.05);在22～40日龄阶段,4%乳糖组仔猪的平均日增重显著(P＜0.05)高于2%乳糖组仔猪,其蛋白质、纤维、铜和锌的采食量均分别极显著(P＜0.01)地高于2%乳糖组仔猪,钙、总磷和铁的采食量分别显著(P＜0.05)地高于2%乳糖组仔猪;在41～60日龄阶段,3%乳糖组仔猪的平均日增重显著(P＜0.05)高于2%乳糖组仔猪,而只有铜和锌的采食量极显著(P＜0.01)地高于1%乳糖组仔猪,其余营养物质的采食量差异不显著(P＞0.05).
6 lactating sows with a total number of 58 piglets aged 1 day were allotted into 2 treatments, each had 3 replicates, to evaluate the effect of lactose inclusion on the feed intake and performance of piglets. All piglets weaned at 22^nd day after birth, this 54 d trial consisted of three periods： 7^th-0 21^at d, 22^nd-40^th d and 41^at-60^th d. The results showed that： there was no significant difference（P 〉 0.05） between the average daily gain of piglets aged from 7%th g to 21^at day when offered a diet with 2.5% lactose compared with a diet with 4.5% lactose; during 22^nd- 40^th day, the average daily gain of the piglets offered 4% lactose was significantly higher（P 〈0.05） than that of the piglets offered 2% lactose, and the intake of protein, crude fibre, copper and zinc was also significantly higher（P 〈 0.01 ） than that of the piglets offered 2% lactose, respectively. From 41^st to 60^th day, the average daily gain of piglets offered 3% lactose was significantly （P 〈 0.05） higher than that of the piglets offered 1% lactose, the intake of copper and zinc of the piglets offered 3% lactose was significantly higher（P 〈0.01 ） than that of the piglets offered 1% lactose.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2005年第6期898-901,共4页
Acta Agriculturae Universitatis Jiangxiensis
基金
百世腾牧业集团资助项目
关键词
乳糖
仔猪
生产性能
lactose
piglet
performance
