壳聚糖铁对仔猪生长性能及免疫功能的影响  

Effects of chitosan-Fe on the production performances and immune functions of piglets

作　　者：朱凤华[1] 王吉才[1] 朱连勤[1] 隋菲菲[1] 常顺华[1] 

机构地区：[1]青岛农业大学动物科技学院,山东青岛266109

出　　处：《畜牧与兽医》2009年第8期29-32,共4页Animal Husbandry & Veterinary Medicine

基　　金：青岛农业大学高层次人才科研基金(630622)

摘　　要：选24头体重相近、日龄相同的健康仔猪随机分为6组：1组为对照组，饲喂基础日粮；2组为壳聚糖组，在基础日粮中添加壳聚糖300mg／kg；3组为硫酸亚铁组，以硫酸亚铁的形式在基础日粮中添加铁100mg／kg；4～6组为壳聚糖铁组，以壳聚糖铁的形式分别在基础日粮中添加铁70mg／kg、100mg／kg和130mg／kg，研究壳聚糖铁对仔猪生产性能及免疫功能的影响。结果显示：3～6组仔猪平均日增重显著高于第1组、第2组（P〈O．05）；第6组仔猪料重比显著低于第1组（P〈0．05）。试验至15d，第5、第6组仔猪外周淋巴细胞转化率显著高于第1—4组（P〈0．05或P〈0．01）；第4组、第5组仔猪血清球蛋白含量显著高于第1组和第3组（P〈0．05）。试验至30d，第6组仔猪外周淋巴细胞转化率显著高于第1、第2组（P〈0．05或P〈0．01）；第3～5组显著高于第1组（P〈0．05）。试验至45d和60d，第5组、第6组仔猪外周淋巴细胞转化率显著高于第1～3组（P〈0．05）。试验至45d，第5组和第6组仔猪血清球蛋白含量显著高于第1组和第2组（P〈0．05）。试验至60d，第4～6组仔猪血清球蛋白含量显著高于第1组和第3组（P〈0．05）。试验表明，壳聚糖铁能显著提高仔猪的生产性能，与硫酸亚铁基本一致；壳聚糖铁能增强仔猪免疫功能，效果要显著优于硫酸亚铁。Twenty-four healthy piglets with similar body weight and same age were divided into 6 groups randomly with 4 replications per group to study the effect of chitosan-Fe on the production performance and the immune function in 60 days. Group Ⅰ （ the control group） was fed alone with the basal diet. Group Ⅱ was fed with basal diets supplemented with 300 mg/kg chitosan. Group Ⅲ was supplemented with 100 mg/kg Fe as FeSO4 in basal diets. Groups IV, V and VI were basal diets supplemented with 70, 100 or 130 mg/kg Fe as chitosan-Fe, respectively. The results showed that the body weight gains of piglets were significantly increased when the diets were supplemented with Fe as FeSO4 or chitosan-Fe （ P〈0. 05 ）. The ratio of feed and weight was significantly decreased when the piglets were fed diets containing the 130 mg/kg Fe as chitosan-Fe （P〈0. 05）. The lymphocyte transformation rates of piglets fed with diets supplemented with 100 or 130 mg/kg Fe as chitosan-Fe were higher than other （ P〈0.05 or P〈0. 01 ）. The serum immunoglobulin concentrations of piglets fed with diets supplemented with 70 or 100 rng/kg Fe as chitosan-Fe were higher than 100 mg/kg Fe as FeSO4 or control diet （P〈0. 05） on 15^th day. The lymphocyte transformation rates were significantly increased （ P〈0. 05 or P〈0. 01 ） when piglets were fed with diets supplemented with Fe on 30th day. The lymphocyte transformation rates of piglets fed with diets supplemented with 100 or 130 mg/kg Fe as chitosan-Fe were higher than 100 mg/kg Fe as FeSO4 or control diet （ P〈0. 05 ） , and the serum immunoglobulin of piglets fed with diets supplemented Fe as chitosan-Fe were higher than 100 mg/kg Fe as FeS04 or control diet （P〈0.05） on 45^th day or 60^th day. In summary, the findings suggested that ehitosan-Fe can improve the production performance of piglets same as FeSO4, and the immune function of piglets is increased by chitosan-Fe, better than FeSO4.

关 键 词：仔猪 壳聚糖铁 增重 淋巴细胞转化率 球蛋白 

分 类 号：S828[农业科学—畜牧学]