主题：【求助】翻译高手帮帮忙啊！

供屠宰用的舍饲小母牛：将MGA 200预混剂(A 类加药）充分混合在补充料中，剂量按甲烯雌醇乙酸酯计为0.25至0.50毫克/头/日。平均每日摄入量接近上述剂量的中间值时,将在增重和饲料转化效率上发挥最优和最经济的作用。长期每日每头摄入量为0.35至0.50毫克时，能强力抑制发情；每日每头的摄入量为较低水平的0.25至0.35毫克时, 在一定程度上仍然能抑制发情。

繁殖用小母牛：将MGA 200预混剂(A 类加药）充分混合在补充料中，剂量按甲烯雌醇乙酸酯计为0.5毫克/头/日.


对比一下看可有区别，你可以先翻译，我给你修改，好么？？

饲料转化效率
饲料利用律?

Mixing Directions:Thoroughly mix 1.25 to 10 pounds of MGA 200 Premix (Type A Medicated Article) per ton of non-medicated feed to prepare a Type C medicated feed containing 0.25 to 2.0 grams of melengestrol acetate per ton. The following table may be used as a guide in determining the amount of MGA 200 Premix (Type A Medicated Article) to be added to prepare a ton of Type C medicated feed.

  Type B medicated feeds containing 4 to 10 grams melengestrol acetate per ton may be manufactured by thoroughly mixing 20 to 50 lbs of MGA 200 Premix with 1980 to 1950 lbs of non-medicated feed. Labeling for such Type B feeds shall contain directions for manufacturing Type C medicated feeds containing 0.25 to 2.0 grams melengestrol acetate per ton (0.125-1.0 mg/lb). The Type C medicated feed, containing melengestrol acetate, must be top dressed on grain or roughage or mixed with a complete ration at the rate of 0.5 to 2.0 pounds per head per day. 
  Good manufacturing practice regulations must be adhered to in manufacturing feeds containing MGA 200.
制备的操作方法：每吨没有加药的饲料与1.25至10磅本品混合，制备得到含甲烯雌醇乙酸酯0.25至2.0克每吨的C型加药饲料。参照下表，可以确定MGA200预混剂的量制备C型加药饲料。
    每吨B型药物饲料含有4至10克的甲烯雌醇乙酸酯，它是由20至50磅的MGA 200预混剂与1980至1950磅的无药饲料充分混合制成的。标号为B型的药物饲料应该包含制造甲烯雌醇乙酸酯含量为0.125-1.0 毫克/磅的C型药物饲料的方法。经过过筛除去粗谷物的C型饲料的使用量是0.5至2.0磅/头/日。
  生产系列的MGA 200的饲料必须按照GMP的法规操作。
         
   

non-medicated feed 非药物性饲料
可以确定MGA200预混剂的量制备C型加药饲料。......制备每吨C型加药饲料所需MGA200预混剂的量

原文由 happymingxu 发表:
CAUTION: Not effective in steers and spayed heifers
  Heifers Fed in Confinement for Slaughter: Withdrawal periods of three to five days or more should be avoided to prevent the possibility that the heifers may come into estrus (heat) at loading time.
  Heifers Intended for Breeding:Do not exceed 24 days of feeding of melengestrol acetate to heifers intended for breeding. A reduced conception rate can be expected if heifers are bred at estruses observed within 1 to 12 days after withdrawal of melengestrol acetate, whereas heifers bred at subsequent observed estruses are expected to have normal conception rates.
警告：对阉公牛和阉割的母牛无效
屠宰用舍饲小母牛：应避免3-5天或更长的停药期，以防止青年母牛在装车时出现发情的可能性.
种用小母牛：种用小母牛饲喂甲烯雌醇乙酸酯勿超过24天。当在停用甲烯雌醇乙酸酯1-12天内观察到种用小母牛发情并在此时配种，受胎率可能降低；如果在下一个情期配种，则母牛的受胎率正常。

原文由 redanqi 发表:
饲料转化效率
饲料利用律?

应该为增重率和饲料利用率。

原文由 happymingxu 发表:
Mixing Directions:Thoroughly mix 1.25 to 10 pounds of MGA 200 Premix (Type A Medicated Article) per ton of non-medicated feed to prepare a Type C medicated feed containing 0.25 to 2.0 grams of melengestrol acetate per ton. The following table may be used as a guide in determining the amount of MGA 200 Premix (Type A Medicated Article) to be added to prepare a ton of Type C medicated feed.

  Type B medicated feeds containing 4 to 10 grams melengestrol acetate per ton may be manufactured by thoroughly mixing 20 to 50 lbs of MGA 200 Premix with 1980 to 1950 lbs of non-medicated feed. Labeling for such Type B feeds shall contain directions for manufacturing Type C medicated feeds containing 0.25 to 2.0 grams melengestrol acetate per ton (0.125-1.0 mg/lb). The Type C medicated feed, containing melengestrol acetate, must be top dressed on grain or roughage or mixed with a complete ration at the rate of 0.5 to 2.0 pounds per head per day. 
  Good manufacturing practice regulations must be adhered to in manufacturing feeds containing MGA 200.

混合方法：向每吨非加药饲料中加入1.25至10磅MGA 200 预混剂（A类加药饲料），制成每吨含甲烯雌醇乙酸酯0.25至2.0克的C型加药饲料。参照下表，可以确定每吨C型加药饲料需要的MGA 200预混剂的量。
    B型加药饲料每吨含有4至10克的甲烯雌醇乙酸酯，它是由20至50磅的MGA 200预混剂与1980至1950磅的非加药饲料充分混合制成的。B型加药物饲料的标签上，应该包含制造每吨甲烯雌醇乙酸酯含量为0.25-2克（0.125-1.0 毫克/磅）的C型加药饲料的方法。含甲烯雌醇乙酸酯的C型加药饲料，应该按0.5至2.0磅/头/日的比例在谷物或粗饲料上撒喂或与全价饲料混合后饲喂。
  生产含MGA 200的饲料必须遵照GMP法规。     
   

谢谢大家，基本可以把这文章搞清楚了！