Malt and Potato Eruption. 867 



Literature. Bar, Schw. A., 1902, XLIV, 1. — Becker, Unters. lib. die Otitis, 

 ext. d. Hinides. Diss. Giessen., 1907 (Lit.).— de Benedictis, Clin. Vet., 1904, 73. — 

 Frohner, Monh., 1908, XIX, 120, 124. — Imhofer, Beitr. z. Anat. etc. d. Ohres, d. 

 Nase imd d. Halses. Bd. II, 289 (Lit.).— Mathis, J. vet., 1901, 593.— Mouroux, 

 Bull., 1904, 521.— Moussn. Eec, 1898, 81.— Noack, S. B., 1893, 123.— Prietscli, ibid., 

 1893, 124.— Qiialdncci, Clin, vet., 1903, 281.— Eichter, Z. f. Tm., 1905, IX, 23.— 

 Eoloflf, Pr. Mt., 1868-69, 116.— Eottliinder, Beitr. z. Atiol. d. Ekzema in d. Fessel- 

 beuge. Diss. Leipzig, 1908 (Lit.). — Siedanigrotzky, S. B., 1890, 21; 1892, 18. — 

 Unna, Pathol, u. Therapie d. Ekzems. Wien, 1903.— Veiel, Miinch. med. W., 1904, 

 1.— Walther, S. B., 1889, 79. 



8. Food Rash. 



(a) Malt and Potato Eruption. 



{Schlempenmmihe unci KartoffelausscMag, Rindermau'ke, Fuss- 



mmiJce, Fuss grind [German] ; Eczema des dreches 



de pommes de terre [Frenchj.) 



Malt eczema is a disease generally occurring only in cattle 

 and affecting the skin of the ends of the extremities with a form 

 of vesicular eczema. It is found mostly in steers and dry cows 

 if they receive many potatoes or their industrial residues, es- 

 pecially distiller's slop for any length of time. 



History. The disease was first described by Spinola in the year 

 1836. After him several authors investigated the nature of the affec- 

 tion, among others Roloff, Ziirn, Rabe, Johne, Brautigam, without, how- 

 ever, having solved the problem conclusively. 



Occurrence. Malt eczema occurs chiefly in the fattening 

 stables of potato distilleries, and especially in the spring. It 

 causes considerable loss in the affected stock by preventing 

 fattening and by occasional cases of death. 



According to Ohlmann potato residues may also cause a similar 

 eruption in horses ; Gros-Claude and Frank saw the occurrence of an 

 eruption in sucking foals whose mothers were fed with germinating 

 potatoes or potato slop. 



Etiology. The disease usually develops in those cattle 

 which receive very little green and corn food and many pota- 

 toes. The effect is the same whether raw or cooked tubers, or 

 leaves of the potato plant, or distiller's slop or other industrial 

 residues of potatoes are used as food. Steers ingest an aver- 

 age of 60, cows of 40.1 liters of the potato slop daily without ill 

 effects; 32 pounds of raw potatoes may cause a severe rash 

 (Marker). These figures are not of absolute value, for in this 

 respect not inconsiderable differences have been noticed in dif- 

 ferent years and at different times of the year in so far as, in 

 spite of like methods of feeding, the disease is frequent in cer- 

 tain years and is moreover much more frequent in spring than 

 during the rest of the year. That the disease occurs particu- 

 larly in the spring is, at least in part, due to the circumstance 



