نتایج جستجو برای: cattle urine
تعداد نتایج: 114709 فیلتر نتایج به سال:
BACKGROUND Prions, the infectious agents responsible for transmissible spongiform encephalopathies, consist mainly of the misfolded prion protein (PrP(Sc)). The unique mechanism of transmission and the appearance of a variant form of Creutzfeldt-Jakob disease, which has been linked to consumption of prion-contaminated cattle meat, have raised concerns about public health. Evidence suggests that...
The origin of Vaccinia virus (VACV) outbreaks in Brazil remains unknown, but since the isolation of VACV in Mus musculus mice during a zoonotic outbreak affecting cattle and milkers, peridomestic rodents have been suggested to be a link between cows and wild animals. Considering that experimentally infected mice eliminate viral particles in their feces, we investigated the presence of VACV in t...
When reducing ammonia emissions from cowsheds, it is recommended to reduce the ventilation intensity, air temperature in barn, manure moisture by using bedding and manure-contaminated surfaces, prevent urine accumulating airways. Using mass flow method wind tunnel, after research on seven types of cattle with different contents, was found that evaporates up 3.9 times more intensively liquid tha...
The objective of this study was to evaluate whether different severities of short-term feed restriction (FR) affect the absorptive function of the reticulo-rumen and total tract barrier function in beef cattle. Eighteen ruminally cannulated and ovariectomized Angus × Hereford heifers were blocked by BW into 3 blocks, with blocks conducted sequentially. Treatments were imposed during the 5-d FR ...
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