摘要
试验将280只平均体重为(6.13±0.22)kg的断奶仔猪随机分为4组,每组7个重复,每个重复10只猪。试验基础日粮为玉米-大豆型日粮,对照组(锌含量为42.5 mg/kg)和试验组分别在基础日粮中分别以硫酸锌、硫酸锌+多糖及锌-多糖螯合物的影响分别添加80 mg/kg锌。结果表明,锌-多糖螯合物比硫酸锌和硫酸锌+多糖显著提高断奶仔猪的平均日增重和平均日采食量(P<0.05)。饲喂锌-多糖螯合物日粮的断奶仔猪较硫酸锌日粮组显著降低了腹泻率(P<0.05),且粗蛋白质表观消化率显著提高(P<0.05)。日粮添加锌-多糖螯合物较硫酸锌和硫酸锌+多糖组显著提高了十二指肠蛋白酶活性(P<0.05),同时锌-多糖螯合物组较对照组和硫酸锌组也显著提高了十二指肠淀粉酶活性(P<0.05)。结论:本试验结果表明,日粮添加锌-多糖螯合物在降低断奶仔猪腹泻率、提高十二指肠消化酶活性和生长性能方面表现出不同于硫酸锌或硫酸锌+多糖的生物活性。
In this study,280 weaning piglets with an average weight of(6.13±0.22)kg were randomly divided into 4 treatment groups,each with 7 replicates and each with 10 pigs.The basic diet of the experiment was corn-soybean type.The control group(zinc content was 42.5mg/kg)and the experimental group added 80 mg/kg zinc to the basic diet as the types of zinc sulfate,zinc sulfate+polysaccharide and zinc-polysaccharide chelate,respectively.The results showed that zincpolysaccharide chelate could significantly increase the average daily weight gain and average daily feed intake of weaned piglets(P<0.05).Compared with zinc sulfate diet,weaning piglets fed zinc-polysaccharide chelate diet significantly reduced diarrhea rate(P<0.05)and significantly increased apparent digestibility of crude protein(P<0.05).Dietary addition of zinc-polysaccharide chelate significantly increased the activity of duodenal protease compared with zinc sulfate and zinc sulfate+polysaccharide group(P<0.05),and the zinc-polysaccharide chelate group also significantly increased the activity of duodenal amylase compared with the control group and zinc sulfate group(P<0.05).Conclusion:the results of this study showed that dietary zinc-polysaccharide chelates showed different biological activities from zinc sulfate or zinc sulfate+polysaccharide in reducing the incidence of diarrhea,improving the activity and growth performance of duodenal digestive enzymes in weaned piglets.
作者
段建兵
赵占军
相艳丽
DUAN Jianbing;ZHAO Zhanjun;XIANG Yanli(Xinji City Animal Husbandry Workstation,Xinji,Hebei Province 052360,China;Xinji Animal Health Supervision Institute,Xinji,Hebei Province 052360,China)
出处
《中国饲料》
北大核心
2020年第2期25-28,共4页
China Feed
关键词
锌-多糖螯合物
断奶仔猪
腹泻
养分消化率
消化酶
zinc-polysaccharide chelates
weaned piglet
diarrhea
nutrient digestibility
digestive enzyme
