Dermatitis associated with consumption of defatted rice bran in cattle

Pesquisa Veterinária Brasileira

Riet-Correa, Franklin³  Barros, Claudio S.L.²  Giaretta, Paula R.²  Martins, Tessie B.¹  Tessele, Bianca¹  Brum, Juliana S.¹ 

[1] Universidade Federal de Santa Maria, Santa Maria, Brasil;UFSM, Santa Maria;Universidade Federal de Campina Grande, Patos, Brasil

关键词: Cattle diseases;    skin diseases;    dermatitis;    hypersensitivity;    rice bran.;   

DOI  :  10.1590/S0100-736X2012000700007

来源: Colegio Brasileiro de Patologia Animal-CBPA

【 摘 要 】

Dermatitis has been observed in Uruguay and Rio Grande do Sul, in cattle supplemented with defatted rice bran in an amounts equivalent to 1% of body weight. An outbreak of dermatitis in cattle associated with consumption of defatted rice bran in Rio Grande do Sul, is herein described. Out of a total of 26 3-year-old cattle consuming this ration, seven had lesions that were observed after 24 days on the ration. The lesions were observed in the distal hind limbs and were characterized by areas of alopecia with marked thickening of the epidermis with crust formation imparting a thicken and fissured aspect to the skin. The histological lesions observed in these cases were characterized as moderate superficial perivascular chronic dermatitis focally extensive, with irregular acanthosis and serocellular crusting. The gross lesions observed, together with epidemiological data, allow for a diagnosis of dermatitis associated with the consumption of defatted rice bran. Histologic changes, although not pathognomonic, are typically described in this disease. Index

【 授权许可】

CC BY-NC