[Relationship between reproductive and productive performance in poultry flocks]

The author analyses the interrelationship between the hygienic prerequisites of reproduction and performance in poultry farming, with regard to their impact on human health. The main factors influencing the hatching rate of poultry eggs are reviewed along with their epizootiological and economic aspects, and the possibilities of the prevention of egg-transmitted diseases are discussed.

Growth inhibition of Escherichia coli by nitrate reductase

The metabolite of a not nearer identified Pseudomonas strain inhibited or inactivated Escherichia coli in presence of nitrate.

[Carcass disposal in Hungary (author's transl)]

In Hungary more than half of the entire livestock is kept in industrial breeding plants i.e. under mass breeding conditions. So long as the industrial capacity of the plants remains insufficient to process the volume of carcasses, the animal breeding plants are compelled to find their own solutions for the disposal and/or rendering of the carcasses and waste. On some state farms the carcasses are processed into so-called meat-mash which must be utilised as fodder within 48 hours after the death of the animal. High-quality meat-meal can only be obtained from fresh carcasses. Carcasses are processed for reasons of economy, but the methods of carcass disposal are subject to stringent requirements imposed by the public health service, veterinary hygiene inspectorates and by the environment protection authorities. The carcasses or slaughter-house waste destined for processing must not contain any pathogens likely to be injurious to man or animal or to threaten the health of the persons concerned with the carcass processing. For this reason the carcasses must be kept in boilers for 2 to 4 hours at a pressure of 4 atü. The formulation of the factory rules and the technology of processing must make due allowance for these stipulations.

Neurological infections caused by herpes simplex virus in adults

Over a period of 33 months, 281 neuro-infections were tested for herpes simplex virus. In 26 cases herpes simplex virus was identified as the aetiological agent by isolation of the virus from the cerebrospinal fluid and by serological tests. The illness took the form of severe encephalitis in four cases, less severe encephalitis or meningoencephalitis in 12 cases, aseptic meningitis in seven cases, meningo-encephalitis with radiculitis in one case, ascending radiculomyelitis in one case and radiculitis in one case. The diagnostical and therapeutical problems of herpes simplex neuro-infections are discussed.