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Métodos y estrategias para la deteccion de bovinos persistentemente infectados con el virus de diarrea viral bovina (DVB)
No full textA follow up serological study on Neospora caninum infection in herds affected by abortion in Italy.
No full textThe effects of control measures for paratuberculosis on sero-prevalence and clinical disease in Northern Italian dairy herds
No full textThe effects of a control program for paratuberculosis were assessed during a six years
period (2001-2006). The survey involved 8 dairy herds located in Northern Italy, with a
number of animals aged >24 months ranging from 224 to 784, mean 437 (SD = 154), median
411. Globally, a mean of 3,497 (SD = 328) animals aged >24 months per year were
monitored during the six years period. Cows showing diarrhoea were readily detected,
isolated and culled after laboratory confirmation. Cows were tested by an indirect blood
serum ELISA during the dry period. Calves were fed only with colostrum from sero-negative
cows and with milk submitted to thermic treatment (70°C for 40 min).
Based on the total number of animals > 24months of age, historical means (from 1995
to 2000) of the sero-prevalence and prevalence of clinical cases were 12.6% and 5.5%,
respectively. Statistical analysis of sero-positivity and clinical cases trends after the
beginning of the control program showed a significant (p<0.01) reduction of both parameters
during the six years period. In particular, the sero-prevalence decreased from 12.7% to 7.3%
and clinical cases decreased from 5.3% to 3.2%.
Following the use of the pasteurizers, a strong reduction of neonatal diarrhoea was
observed in all the herds. In addition, the calf’s mean weight gain/day moved from 500 g to
900 g. Conversely, an increase of myodystrophy cases was detected after two months of
age. The problem was solved by adding selenium and vitamin E to the pasteurized milk
L’infezione da Virus della Diarrea Virale del Bovino (BVDV). Diagnosi, strategie di controllo ed esperienze di controllo in condizioni di campo
No full textA follow ap serological study on Neospora caninum infection in herds affected by abortion in Italy
No full textThe effects of biosecurity measures for paratuberculosis on seroprevalence and clinical disease in Northern Italian dairy herds
No full text
Treatment of acute respiratory disease occuring during the post-partum period in dairy cows.
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