Miltenburg G A, Wensing T, van de Broek J, Mevius D J, Breukink H J
Department of Large Animal Medicine and Nutrition, Veterinary Faculty, State University of Utrecht, The Netherlands.
Vet Q. 1992 Jan;14(1):18-21. doi: 10.1080/01652176.1992.9694320.
The effect of different iron concentrations in the milk replacer on the development of iron deficiency anaemia during a fattening period of 28 weeks was studied in three groups of 14 calves. The iron contents in the milk replacer differed during the first seven weeks: 60, 100 and 150 mg Fe/kg in groups A, B and C, respectively. In all three groups blood haemoglobin, mean corpuscular volume, plasma iron concentration and saturation decreased during the fattening period, whereas the total iron-binding capacity increased. At week 7, liver iron concentrations were high with a large individual variation [A: 201 (61-706), B: 99 (47-129), C: 296 (77-1572) micrograms/g dry matter]. During the fattening period, liver iron concentrations decreased, with the lowest values at week 25 [A: 54 (34-82), B: 55 (44-83), C: 57 (42-79) micrograms/g dry matter]. Muscle iron concentrations decreased between week 7 and 19. Except plasma iron and saturation in group C, no differences in haematological and tissue iron variables were found throughout the fattening period in spite of different iron contents in the milk replacer during the first seven weeks.
在三组每组14头犊牛中，研究了代乳粉中不同铁浓度对28周育肥期缺铁性贫血发展的影响。代乳粉中的铁含量在前七周有所不同：A组、B组和C组分别为60、100和150毫克铁/千克。在所有三组中，育肥期内血血红蛋白、平均红细胞体积、血浆铁浓度和饱和度均下降，而总铁结合力增加。在第7周时，肝脏铁浓度较高，个体差异较大[A组：201（61 - 706）、B组：99（47 - 129）、C组：296（77 - 1572）微克/克干物质]。在育肥期内，肝脏铁浓度下降，在第25周时达到最低值[A组：54（34 - 82）、B组：55（44 - 83）、C组：57（42 - 79）微克/克干物质]。肌肉铁浓度在第7周和第19周之间下降。尽管在前七周代乳粉中铁含量不同，但在整个育肥期内，除了C组的血浆铁和饱和度外，血液学和组织铁变量未发现差异。
