Bünger U, Kaphengst P, Kleiner W, Schmoldt P, Fiebig U, Motsch T, Pongé J
Arch Tierernahr. 1984 Sep;34(9):641-9. doi: 10.1080/17450398409425714.
195 rearing calves, which immediately after their gathering from various dairy farms had an anaemia frequency of 57.4% and an average age of 22 d and an average live weight of 43 kg, were at random divided into 3 groups and received in addition to the iron in the rations oral (B), intramuscular (C) or no (A) ferridextrane applications during their 56-day stay in the fluid feed range of a rearing farm. The average live weight gain of the calves during these 56 days in groups A, B, and C was 882 +/- 171, 949 +/- 145 and 912 +/- 170 g/d resp. and during the 57-day stay in the weaning range 664 +/- 205, 715 +/- 222 and 670 +/- 226 g/d resp. The significant advantage in the development reached by the calves in group B over those in group A during their stay in the fluid feed range did not get lost after the change to the weaning range. Based on the cost of medicine and on the development of the live weight of the calves in the 3 test groups in the fluid feed and weaning ranges the economic effect of ferridextrane applications was calculated. Under the rearing conditions given, iron intervention proved to be sensible for both health and economic reasons.
195头饲养犊牛，从各个奶牛场集中起来后，贫血发生率为57.4%，平均年龄22天，平均活重43公斤，被随机分为3组。在饲养场的流食期56天内，除了日粮中的铁之外，A组不进行葡聚糖铁应用，B组口服葡聚糖铁，C组肌肉注射葡聚糖铁。A、B、C组犊牛在这56天内的平均日增重分别为882±171、949±145和912±170克；在断奶期57天内的平均日增重分别为664±205、715±222和670±226克。B组犊牛在流食期的生长发育明显优于A组，进入断奶期后，这种优势依然存在。根据药物成本以及3个试验组犊牛在流食期和断奶期的体重增长情况，计算了葡聚糖铁应用的经济效益。在给定的饲养条件下，从健康和经济角度来看，铁干预是合理的。
