两种微量元素螯合物对断奶仔猪生长性能、肠道形态和器官指数影响的比较  

Comparison of the effects of two microelement chelate on growth performance,intestinal morphology and organ indexes of weaned piglets

作　　者：丁兵帅 李素倩 王晔 DING Bingshuai;LI Suqian;WANG Ye(School of Life Science and Engineering,Foshan University,Foshan 528200,China)

机构地区：[1]佛山科学技术学院生命科学与工程学院,广东佛山528200

出　　处：《黑龙江畜牧兽医》2023年第3期104-107,113,共5页Heilongjiang Animal Science And veterinary Medicine

基　　金：广东省畜禽遗传育种工程技术研究中心项目([2015]1487);广东普通高校动物分子设计与精准育种重点实验室项目(2019KSYS011);畜禽精准育种创新团队项目(2019KCXTD006)。

摘　　要：为了比较甘氨酸微量元素螯合物和海藻多糖微量元素螯合物在断奶仔猪上应用的效果,试验将160头胎次相近的杜×长×大三元杂交断奶仔猪依照体重相近的原则分成2个处理组,每个处理组4个重复,每重复20头猪。对照组饲喂断奶教槽料+甘氨酸微量元素螯合物,试验组饲喂断奶教槽料+海藻多糖微量元素螯合物,试验期为18 d。试验结束时,计算猪平均采食量、平均日增重、料重比和腹泻率;每组每个重复选1头接近平均体重的仔猪屠宰,取免疫器官(胰腺、脾脏、淋巴结与胸腺),计算器官指数;取十二指肠近端段、空肠中段和回肠远端段组织样本,制作组织切片,测量肠绒毛高度和隐窝深度,计算绒毛高度与隐窝深度比值(绒毛高度/隐窝深度)。结果表明:试验组仔猪平均日采食量、平均日增重比对照组提高9.5%、18.6%(P<0.05),料重比降低7.7%(P<0.05),腹泻率下降48.6%(P<0.05);与对照组相比,试验组胰腺指数与淋巴结指数分别提高20.5%和14.9%(P<0.05),胸腺指数和脾脏指数差异不显著(P>0.05);试验组十二指肠、空肠和回肠的绒毛高度、隐窝深度和绒毛高度/隐窝深度较对照组显著增加(P<0.05)。说明与甘氨酸微量元素螯合物相比,海藻多糖微量元素螯合物可显著提高断奶仔猪的生长性能,改善肠道形态,提高免疫力。In order to compare the effects of glycine microelement chelate and seaweed polysaccharide microelement chelate on weaned piglets,in the experiment,160 Duroc×Long White×Big White ternary hybrid weaned piglets with similar litter size were selected as test subjects and divided into 2 treatment groups with 4 replicates of 20 pigs each according to the principle of similar weights.The control group was fed weaning feed+glycine microelement chelate and the experimental group was fed weaning feed+seaweed polysaccharide microelement chelate for 18 d.At the end of the experiment,the average feed intake,average daily weight gain of pigs,feed weight ratio and diarrhea rate were measured and calculated.For each group,one piglet of near average body weight was selected for slaughter in each replicate,and immune organs(pancreas,spleen,lymph nodes and thymus)were taken to calculate organ indexes;tissue samples were taken from the proximal duodenum,middle jejunum and distal ileum,tissue sections were made;intestinal villus height and crypt depth were measured,and ratio of villus height to crypt depth(villus height/crypt depth)were calculated.The results showed that the average feed intake and average daily weight gain of piglets in the experimental group were 9.5%and 18.6%higher than those in the control group(P<0.05);the feed-to-weight ratio was reduced by 7.7%(P<0.05),and the diarrhea rate decreased by 48.6%(P<0.05).Compared with the control group,the pancreatic index and lymphatic index were increased by 20.5%and 14.9%,respectively,in the experimental group(P<0.05),and the thymus index and spleen index were not significantly different from the control group(P>0.05);the villus height,crypt depth and villus height/crypt depth in the duodenum,jejunum and ileum were significantly increased in the experimental group(P<0.05).The results suggested that seaweed polysaccharide microelement chelate could significantly improve growth performance,improve intestinal morphology and enhance immune function of weaned piglets compared wit

关 键 词：海藻多糖螯合物 甘氨酸螯合物 断奶仔猪 生长性能 肠道形态 

分 类 号：S828[农业科学—畜牧学] S816.72[农业科学—畜牧兽医]