添加广西沸石和麦饭石饲喂生长肥育猪的试验研究

A STUDY ON THE EFFECTS OF LOCAL ZEOLITE AND MAIFAN-STONE ADDED IN DIETS OF GROWING-FINISHING PIGS

选用杂交仔猪20窝60头,按平衡不完全区组设计分成6个组,每组10头,分两阶段饲养,为期117天.基础饲粮(B)按国家瘦肉型猪饲养标准配制.饲粮处理为:(1)对照组,100%8,(2)97%B+3%沸石(GXZ),(3)95%B+5%GXZ,(4)97%B+3%麦饭石(MFS),(5)95%B+5%MFS,(6)99%B+1%沸麦复合剂(ZMA).试验结果为,各组平均日增重(g)分别为:586,589,631,574,612,656,组间差异不显著(P>0.05);饲料转化比(扣除沸石、麦饭石等):3.249,3.129,3.088,3.219,3.147,3.188,试验组饲料效率有所提高.血液、肌肉、内脏器官组织分析结果表明,沸石、麦饭石及沸麦复合剂对猪血液生化指标、组织器官矿物元素含量和肉品质量等均无不良影响.消化代谢试验选择3窝9头杂交去势公猪,按随机区组设计分成3个组,每组3头.1组喂5%沸石日粮,2组喂3%麦饭石日粮,3组喂基础口粮(对照组).试验结果表明,5%沸石和3%麦饭石日粮,其有机物、粗蛋白质、能量、粗脂肪、无氮浸出物等的表观消化率有所提高;氮存留率、蛋白质生物学价值和能量利用率也有改善.沸石和麦饭石在一定程度上降低动物血液、粪尿中游离氨浓度,减少粪含水量,从而对增进动物健康、净化畜舍环境有益.

This study was carried out to determine effccts of Guangxi Zcolite (GXZ),Maifan—stone(MFS)and their mixture(ZMA)on the pig-raising. Sixty crossbrcd pigs averaging 14.6kg in initial body weight from twenty litters were assigned in a balanced incomplcte block design to diets(10 pigs/dict)containing 0, 3%,5%GXZ,3%,5%MFS and 1%ZMA for 117 days growing—finishing period trial. Aftcr treatments,averagc daity gain(g)were 586,589,63l,574,612,656 respectivcly;fecd/gain(excluding GXZ,MFS or ZMA)were,3.249,3.129, 3.088,3.2l9,3.147,3.188.However,no significant difrecrences(P>0.05)were fousd between treatments with regard to the average daily gain,and there was only a trend for more efficient gains by reeding diets with GXZ,MFS or ZMA.From results of the analy- sis of blood,muselcs and organs,it was indicated that there were no detrimental cffect on the physio—biochcmical functions and mineral nutrition of swinc.The meat quality was a1- so unaffected by the dictary treatment. In a digestivc and metabolic trial,nine crossbrcd castrated male growing pigs aver- aging 40.7kg in initial body weight from three litiers were assigned in a randomized block dcsign to diets containing 0,5%GXZ,3%MFS.The restllts showed that the apparent digestibility of nutricnts,such as organic mattcr,crudc protein,encrgy,ether extraet, nitrogen—free extracts and calcium in swine diets supplemented with GXZ at level 5%or MFS at level 3%tendcd to be improvcd.And there was also some indication that feeding diet with GXZ or MFS improved nitrogen retention,biological value and digestible ener- gy utilization cfficiency.Addition or GXZ or MFS to swine diet redUCCd thc ammonia con. ccntration in b100d, rcCCS alld Hrinc, and thc mOisture content of foees to a ccrtain extent. As described above,it was coneluded that the GXZ and MFS could not onlv be ad- ded to swine diet directly,but also be utilizcd as carricr of come premixes.