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米糠是用稻谷加工大米后的副产品,是稻区农户用来喂猪的最普通的饲料。但是,用米糠喂猪有“三忌”:

一忌喂量过多。在猪的日粮中,米糠的喂量应在25~30%,不宜超过30%的限量。如果超过猪肉品质要受到影响,会产生低品质的软脂肉,还会引起皮炎等症;会使种猪体况过肥,降低繁殖性能;会引起仔猪拉稀,不利生长发育等。

二忌长期存放。优质米糠中,油脂含量高,若存放时间过长,会逐渐酸败变质,使营养价值和适口性降低。因此,宜用新米糠喂猪,不可长时间存放。尤其是不要用存放时间过长的陈米糠喂仔猪。

三忌不补充钙、磷。用米糠喂猪,除要与其它精、粗、青饲料合理搭配,以满足猪对多种营养的需求外,还要适当补充钙、磷。这是因为米糠中的钙含量低,不能满足猪体要求,磷的含量虽多,但以植酸磷为主,不能被猪充分吸收。所以,用米糠喂猪,需在猪的日粮中加入1.5~20%骨粉,以补充饲料中的钙、磷。同时,要让猪多晒太阳,促进钙、磷的吸收。(杜荣)