蝇蛆蛋白替代鱼粉对断奶仔猪生产性能、免疫功能和饲养经济效益的影响

Effects of fishmeal replaced by house-fly-larvace-meal on growth performance,immunity and economic benefit in weaned piglets

为研究蝇蛆蛋白替代鱼粉对断奶仔猪生产性能、免疫功能和饲养经济效益的影响，试验选用180头28日龄健康断奶仔猪，随机分为3个处理，每个处理3个重复，每个重复20头猪，对照组饲喂基础日粮．两试验组以蝇蛆蛋白分别替代基础日粮中50％和100％鱼粉。试验期28d。结果表明：断奶后1～14d．与对照组相比，50％蝇蛆蛋白替代组料肉比显著提高（P〈0．05）；100％蝇蛆蛋白替代组平均日增重（ADG）降低，料肉比提高（P〈0．05）。断奶后15～28d，与对照组相比，蝇蛆蛋白替代鱼粉对生产性能无显著影响（P〉0．05）；但与50％替代组相比，蝇蛆蛋白替代100％鱼粉降低了仔猪平均日增重．提高了料肉比（P〈0．05）。试验全期，各组间仔猪生产性能无显著差异（P〉0．05），但蝇蛆蛋白替代50％鱼粉降低了仔猪腹泻频率，提高了外周血液T淋巴细胞和B淋巴细胞阳性率（P〈0．05），蝇蛆蛋白替代100％鱼粉降低了腹泻频率，提高了外周血液T淋巴细胞阳性率（P〈0．05）．且50％替代组单位增重成本最低。由此可见。蝇蛆蛋白可改善断奶仔猪健康状况，蝇蛆蛋白替代50％鱼粉提高了仔猪生产性能和饲养经济效益。

To investigate the effects of replacement of fishmeal by house-fly-larvae-meal on growth performance,im- munity and economic benefit in weaned piglets,one hundred and eighty 28-day-old weaned piglets were randomly as- signed to 3 groups with 3 replicates of 20 each.Piglets were fed diet with replacement of fish meal by house-fly-larvae- meal at 0%（control group）,50% and 100%,respectively.The trial lasted for 28 d.The results showed that：for the first 14 days ,compared with the control group, replacing 50% fish meal by house-fly-larvae-meal increased the feed/gain ra- tion （F/G）,in the meantime,replacing 100% fish meal decreased average daily gain（ADG）,increased F/G （P 〈 O.05）.For the last 14 days, growth performance of piglets fed with house-fiy-larvae-mea~ were similar with those of the contro~ group （P 〉 0.05） ,whereas,piglets of 100% replacement group behaved lower ADG and higher F/G than piglets of 50% replace- ment group （P 〈 0.05）.For the whole trial,growth performance was similar among three groups （P 〉 0.05）.However diar- rhea frequency of piglets was decreased while positivity of T and B lymph ocyte cell were elevated in 50% replacement groups （P 〈 0.05）.Moreover,diarrhea frequency of piglets was lowered and T lymph ocyte cell positive of piglets was ele- vated,when piglets were fed diets with house-fly-larvaemeal.In addition, the cost per gain of 50% replacement group was the lowest.Thus, house-fly-larvae-meal could improve piglet＇s health, and replacing 50% fish meal by house-fly-larvae- meal could increase growth performance and economic benefit.