，看猪的皮肤颜色。如果猪吃了饲料之后全身发红，甚至红的发紫，尤其是发生在白色猪身上时，就要特别注意。饲料中的某种添加剂也会导致此症状，因此要注意诊断猪是否为中毒。如果是，泽要更换饲料。
First, look at the skin color of the pig. If after eating pig feed body red, or even purple red, especially in white pigs, we should pay special attention to. Some kind of additive in the feed can also cause this symptom, so pay attention to whether the pig is intoxication. If it is, the luster should replace the feed.
第二，注意石粉含量。一些饲料厂为了降格，会采用廉价原料掺入石粉的办法。适量的石粉是猪生长需要，但如果含量过高反而有害。养猪户可以将饲料放到水中搅拌后沉淀，可以发现石粉的多少，若过多，则饲料质量差。
Second, pay attention to the content of stone powder. In order to reduce the price, some feed plants will use cheap raw materials into the stone powder. The proper amount of stone powder is a need for pig growth, but it is harmful if it is too high. Pig farmers can put feed into the water and stir and precipitate, can find the amount of stone powder, if too much, the quality of the feed is poor.
第三，看猪的粪便。正常的猪粪应该是不稀也不硬，落地柔软有形。由于仔猪常拉稀，影响生长，一些饲料厂会在饲料中添加防治腹泻的抗菌药物。如果剂量适当，能够起到一定的效果。但量过大，则会导致猪的粪便发硬，成球状，反而造成消化不良。因此，这类饲料不宜常使用，否则猪的生长会越来越慢。
Third, look at the pig's feces. Normal pig manure should be not dilute or hard, soft and tangible to the ground. Because pigs often diarrhea, some will affect the growth, feed plant antibacterial drugs added in feed in the prevention and treatment of diarrhea. If the dose is appropriate, it can play a certain effect. But too large, it causes the pig's feces to be hard and ball - shaped, but it causes indigestion. Therefore, this kind of feed should not be used often, or the growth of the pig will be more and more slow.
山东福和特种养殖场()专业养殖巴马香猪、藏香猪、宠物香猪，包括巴马香猪种猪和商品猪。巴马香猪肉质鲜美，原属于朝廷贡品，肥而不腻，深受广大消费者的喜爱。同时，巴马香猪养殖是农村养殖致富门路，投入小，回报快，少食，以青饲料和粗粮为主。
山东福和特种养殖场养殖品种：巴马香猪、藏香猪，结合广西特色养殖方式，包括巴马香猪种猪以及商品猪，遵循“品质，合作致富”的香猪文化。 山东福和特种养殖场坚信诚信 欢迎广大客户前来洽谈业务！
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