The effect of rearing conditions during the milk-fed period on milk yield, growth, and maze behaviour of dairy cows during their first lactation.

The objective was to find whether cow growth, milk performance, and behaviour are affected by (1) rearing conditions until weaning after a milk-fed period of 84 d and (2) the sire lineage. Thirty-five Holstein heifers were assigned to one of three treatments: SM, , pen with mother to 21st day, then group pen (they received a maximum of 6 kg of milk daily); SN, , after 3 d with own mother in pen with nursing cow (they received a maximum of 6 kg of milk daily); H, , in hutch from the 2nd to 56th day (6 kg of milk replacer daily), then loose housing pen to weaning (6 kg of milk replacer daily). After weaning at the 84th day, all heifers were kept in pens with the same ration as during calving.

Effect of hot temperatures on the hematological parameters, health and performance of calves.

The objective of this paper was to evaluate the effects of high temperatures on calves. The hypothesis that the red and white blood cells, health, and performance of calves would be influenced by the temperature period at birth and gender was tested. Sixty-three Holstein calves were used.

Colonization of the respiratory tract by drug-resistant bacteria in HIV-infected children and prior exposure to antimicrobials.

The aim of this short communication is to assess colonization by MRSA, penicillin-resistant pneumococci (PRP), fluconazole-resistant (FLU-R) Candida albicans (CA) and non-albicans Candida (NAC), and ciprofloxacin-resistant E. coli with regard to immune recovery due to CD4 T-cell increase depending on the duration of highly active antiretroviral therapy (HAART). Prior exposure to oral cephalosporins (P<0.