No abstract

The aim of this study was to measure serum immunoglobulin concentrations of Nellore cattle produced by in vitro fertilization (IVF) with umbilical diseases and to evaluate surgical excision as a method of treatment. Sixteen cattle with ages ranging from 1 to 15 months, males and females, affected by umbilical diseases were enrolled in the study. Blood samples were collected for cell counts and the determination of immunoglobulin concentrations by electrophoresis and zinc sulphate turbidimetry (ZST). Four calves were presented with umbilical herniation, two with an umbilical herniation associated with a persistent urachus, two with an umbilical herniation with a persistent urachus and omphaloarteritis, three with an umbilical herniation and an urachal diverticulum, three with a persistent urachus, one with an urachal diverticulum, and one with omphalitis. The blood cell counts pre- and post-surgical revealed differences in cell volume and the number of leukocytes. The immunoglobulin values measured by electrophoresis values were below normal in most animals, whereas the ZST showed normal levels in most of them. Most of the calves affected by umbilical diseases and produced by IVF presented hypoglobulinaemia. Correlations between umbilical diseases, failure of passive transfer of immunity and IVF could not be demonstrated.

This report characterizes the digital dermatitis (DD) lesions in the accessory digits of dairy cows and presents data on the applied therapy. Fifteen Holstein cattle with DD affecting the accessory digits of the hindlimbs from four dairy farms with previous history of DD were evaluated. Lesions were excised, the wounds were sutured, and a topical application of oxytetracycline powder covered by bandaging was associated with a single parenteral administration of long acting oxytetracycline IM (20mg/kg). Tissue samples were obtained for histopathology and transmission electronic microscopy (TEM). Lesions from all the animals were recuperated 15 days after surgical procedure. Overal, most DD lesions were papillomatous epidermal projections or wartlike verrucous lesions. Histopathologically, samples revealed hyperplasia of epidermis with hyperkeratosis, several mitoses in the stratum basale and elongated rete ridges in the superficial and middle dermis. TEM revealed long, thin spirochete-like bacteria. Morphologic features of lesions and its response to therapy were comparable to those described for DD.

No abstract

Deformidades flexurais congênitas e adquiridas são presenciadas com certa resistência, não sendo tão comuns na rotina clínica em bezerros, evidenciando a relevância de relato quando isso sucede. O objetivo do presente estudo é relatar o caso de uma bezerra com deformidade flexural adquirida da articulação metacarpofalangeana esquerda de origem idiopática, ao qual observou-se no exame físico que o animal não conseguia se locomover normalmente e durante o exame de extensão e flexão, observou-se a rigidez da articulação metacarpofalangeana do lado esquerdo. Diante disso, optou-se pelo tratamento clínico mediante a imobilização do membro acometido com tala de PVC e a aplicação de uma injeção de oxitetraciclina, associada a dexametasona. Após oito dias a tala foi retirada e a bezerra passou a apoiar o membro no chão, locomovendo-se normalmente.