Möllerberg L, Ehlers T, Jacobsson S O, Johnsson S, Olsson I
Acta Vet Scand. 1975;16(2):197-204. doi: 10.1186/BF03546674.
Twenty veal calves were fed milk substitute containing 19 mg Fe/kg; ten calves were supplemented with iron in accordance with their requirements and the other 10 were unsupplemented controls. Serum iron (SI), hemoglobin (Hb) and packed cell volume (PCV) were determined at the start of the experiment and then every third week. From 3 weeks after the start to the end of the experiment there were significant differences between SI mean values between treated and untreated calves. In the treated group the Hb mean values were unchanged during the experiment while the untreated group had a significant decrease. The mean PCV values were also decreased. The daily gain was 1.36 g higher per calf in the treated group. The feed consumption per kg gain was 18 g lower and the carcass weight was 4.2 kg higher per calf in the treated group. The points for color and structure of carcass were 2.5 units higher per calf in the untreated group. The incidence of enteritis was less in the treated calves than in the untreated ones.
20头小牛肉牛犊被喂食含铁量为19毫克/千克的代乳品；10头小牛犊根据其需求补充铁元素，另外10头为未补充铁元素的对照组。在实验开始时以及随后每隔三周测定血清铁（SI）、血红蛋白（Hb）和红细胞压积（PCV）。从实验开始3周后到实验结束，治疗组和未治疗组小牛犊的SI平均值存在显著差异。在治疗组中，实验期间Hb平均值未发生变化，而未治疗组则显著下降。平均PCV值也有所下降。治疗组每头小牛犊的日增重高出1.36克。治疗组每千克增重的饲料消耗量低18克，每头小牛犊的胴体重高4.2千克。未治疗组每头小牛犊的胴体颜色和结构得分高2.5分。治疗组小牛犊的肠炎发病率低于未治疗组。
