Seffner W, Albert G, Dürrwald K, Ehrenberg V, Lohr B
Arch Exp Veterinarmed. 1979;33(6):809-18.
--Weights and mean nuclear surfaces of external epithelial bodies were examined in 53 clinically intact young fattening bulls, 49 clinically intact dairy cows, 55 young fattening bulls slaughtered on account of emergency mainly for osteolamacia and rickets, and 50 cows that had died of various diseases. --Absolute parenchymal levels were found to increase along with growing age. --In young fattening bulls, epithelial bodies lost weight and nuclear surface along with severity of pathological bone changes. --Epithelial bodies in cows and young fattening bulls feeding primarily on silage were more active than those of animals feeding to a larger extent on meadow hay or kept grazing. --No signs of increased activity of epithelial bodies were recordable from animals with osteomalacia or those close to parturition. --All results so far derived from the above studies seem to suggest that, with the present regime of cattle feeding, calcium deficit or phosphate excess are not involved in the development of skeletal diseases. The findings so far obtained in the context of epithelial bodies have confirmed the contrary to the effect that calcium excess and phosphate deficit have remained to be the major causes of skeletal diseases.
对53头临床健康的育肥小公牛、49头临床健康的奶牛、55头因主要患有骨软化症和佝偻病而紧急屠宰的育肥小公牛以及50头死于各种疾病的母牛的外部上皮体重量和平均核表面积进行了检查。发现绝对实质水平随年龄增长而增加。在育肥小公牛中，随着病理性骨变化的加重，上皮体重量和核表面积减少。主要以青贮饲料为食的奶牛和育肥小公牛的上皮体比在更大程度上以干草或放牧饲养的动物的上皮体更活跃。骨软化症动物或临近分娩动物的上皮体没有可记录的活性增加迹象。目前上述研究得出的所有结果似乎表明，在目前的牛饲养方式下，钙缺乏或磷过量与骨骼疾病的发生无关。到目前为止，在上皮体方面获得的研究结果证实了与钙过量和磷缺乏仍然是骨骼疾病主要原因这一观点相反的结论。
