【摘要】 研究主要以植物源性饲料添加剂的不同组方、抗生素添加剂分别添加饲料,饲喂断奶仔猪,研究其对断奶仔猪生长性能及养分表观消化率的影响,旨在探讨植物源性饲料添加剂替代抗生素的效果。试验选取28日龄杜长大断奶仔猪72头,根据胎次一致、品种相同、体重相近、公母各半的原则随机分成4组,每组3个重复,每个重复6头。4个处理分别为植物源性饲料添加剂Ⅰ组(基础饲粮中加入0.5%的植物源性饲料添加剂组方Ⅰ)、植物源性饲料添加剂Ⅱ组(基础饲粮中加入0.5%的植物源性饲料添加剂组方Ⅱ)、抗生素组(基础饲粮中添加金霉素50 g/t)、对照组(只饲喂基础饲粮)。试验期为4周。试验结果表明,植物源性饲料添加剂配方Ⅱ组试验猪日增重均优于其它组,在试验初期的0～2周与对照组差异显著(P<0.05)。在整个试验期(0～4周)配方Ⅱ组试验猪料重比明显优于其它组,与对照组差异极显著(P<0.01),与配方Ⅰ组、抗生素组差异显著(P<0.05)。对断奶仔猪的腹泻频率、腹泻指数都有明显改善。配方Ⅱ组试验猪腹泻持续时间短于其它试验组,与配方Ⅰ组差异显著(P<0.05),与对照组差异极显著(P<0.01);配方Ⅱ组试验猪腹泻频率低于其它试验组,与配方Ⅰ组差异显著(P<0.05),与对照组差异极显著(P<0.01);配方Ⅱ组试验猪腹泻指数低于其它试验组,与配方Ⅰ组差异显著(P<0.05),与对照组差异极显著(P<0.01)。植物源性饲料添加剂配方Ⅱ对粗蛋白质、粗脂肪、粗纤维的表观消化率比对照组有显著提高(P<0.05);对钙的表观消化率比配方Ⅰ组有显著提高(P<0.05),比对照组有极显著提高(P<0.01);对磷的表观消化率比配方Ⅰ组、抗生素组有显著提高(P<0.05),比对照组有极显著提高(P<0.01)。植物源性饲料添加剂配方Ⅱ既能达到或超过饲料中添加抗生素所起到的效果,又能弥补抗生素所带来的危害。更多还原

【Abstract】 This research mainly by the different prescription of plant-derived feed additive, antibiotic additive respectively add feed, feeding weaned piglets, study the production performance of weaned piglets and the influence of the apparent digestibility of nutrients, is to explore the effect of plant-derived feed additive substituting antibiotics.The experiment selected 72 Duroc ×Landrace ×Yordshire weaning piglets with similar weight at 28 days of age, and randomly divided them into 4 groups according to the principle of same birth order, same breed, similar weight and half male and half female, with 18 piglets in each group, 3 replicates in each component and 6 piglets in each replicate.Four processing respectively: plant-derived feed additive Ⅰ group(basic feed add 0.5% of plant-derived feed additive formula Ⅰ), plant-derived feed additive Ⅱ group(basic feed add0.5% of plant-derived feed additive formula Ⅱ), antibiotics group(basic feed add aureomycin, add the 50 g/t)and the control group(only feeding based feed). The trial lasted 4 weeks. The results showed that the daily weight gain of pigs in group Ⅱ with plant-derived feed additive was superior to that of other groups, and the difference was significant(P<0.05) between the two groups at 0-2 weeks at the beginning of the experiment. During the whole experimental period(0-4 weeks), the pig feed weight ratio of formula Ⅱ group was significantly better than that of other groups, which was significantly different from the control group(P<0.01), and significantly different from formula I group and antibiotic group(P<0.05). The diarrhea frequency and diarrhea index of weaned piglets were improved obviously. The duration of swine diarrhea in formula Ⅱ group was shorter than that in other test groups, which was significantly different from that in formula I group(P<0.05) and significantly different from that in control group(P<0.01). The diarrhea rate of experimental pigs in formula Ⅱ group was lower than that of other experimental groups, significantly different from that of formula Ⅰ group(P<0.05), and significantly different from that of control group(P<0.01). The diarrhea index of experimental pigs in formula Ⅱ group was lower than that of other experimental groups, significantly different from that of formula Ⅰ group(P<0.05), and significantly different from that of control group(P<0.01). The apparent digestibility of crude protein, crude fat and crude fiber in plant-derived feed additive formula Ⅱ was significantly improved compared with the control group(P<0.05). The apparent digestibility of calcium was significantly increased compared with formula Ⅰgroup(P<0.05) and was significantly increased compared with the control group(P<0.01). The apparent digestibility of phosphorus was significantly increased compared with formulaⅠgroup and antibiotic group(P<0.05), and was significantly increased compared with control group(P<0.01). Formula Ⅱ, a plant-derived feed additive, can both achieve or exceed the effect of adding antibiotics to feed and compensate for the harm caused by antibiotics.更多还原