Bovine mastitis is considered the main disease of dairy herds in the world, causing the greatest economic losses to the dairy sector. In Brazil, production losses caused by mastitis are estimated between 12 and 15%, accounting to more than three billion liters of milk per year. In addition, mastitis poses risks to public health, due to the possibility of contamination of milk with antibiotic residues or with microorganisms and their toxins. The high frequency of mastitis pathogens resistant to t

Status: Completed     Start date: Wed Jul 01 00:00:00 GMT-03:00 2015

The pest aphids Sipha flava and Rhopalosiphum padi have caused significant injuries in elephantgrass and brachiaria swards, respectively. Thus, the objective of this project was to evaluate the bioecology of these pest insects and the predator Chrysoperla externa. The biological aspects of the pests were studied at 12, 16, 20, 24, 28 and 32ºC. Temperatures of 20ºC and 24ºC were more favorable for insect development, and this temperature range is the most appropriate for t ...

Status: Completed     Start date: Wed Aug 01 00:00:00 GMT-03:00 2007