A natural outbreak of Newcastle disease (ND) was reported in a flock of guinea-fowl in Nigeria, affecting 1,029 birds of which 250 (24.3%) died. Paralysis of the legs and wings, coughing, sneezing, white diarrhoea and complete cessation of egg production were observed. Serum samples collected at the onset and during the course of the disease had high ND antibody titres. ND virus was isolated fr...

Today the developments in genetics are exciting. Perhaps this explains why geneticists sometimes seem to overlook common sense solutions. One example of this is the selection experiment done by Bijma et al. (2007a,b). These authors developed a sophisticated statistical method of group selection against mortality in hens randomly placed together. One may safely assume that this mortality is due ...

In view of the possible use of viruses for the immunotherapy of breast cancer, the replication of a strain of fowl plaque virus was studied in the tumor cells of 11 mammary carcinoma patients with malignant effusions. The tumor cells were obtained by centrifugation on iodamide solutions, then cultured in vitro, and infected by a fowl plaque virus previously adapted to grow in a mammary carcinom...

1. A simple, direct method of counting leucocytes of the fowl is described. 2. Twenty-nine complete, morphological studies of the blood of eleven domestic fowls are recorded. 3. The characteristics of the cells found in the blood and bone marrow are described in detail and their relative numbers reported. 4. The supravital technique, using neutral red and Janus green, enables one to separate an...

The purpose of this communication is to bring up to date an experimental study of 55 chemically induced fowl sarcomas, first described some 12 years ago (16-18), and to compare these results with others obtained in parallel experiments with 3 infective fowl sarcomas transmissible by cell-free material. The bearand from further discussion, because they retrogressed during the first serial passag...

Pasteurella multocida is the causative agent of fowl cholera in birds. Signature-tagged mutagenesis (STM) was used to identify potential virulence factors in a mouse septicemia disease model and a chicken fowl cholera model. A library of P. multocida mutants was constructed with a modified Tn916 and screened for attenuation in both animal models. Mutants identified by the STM screening were con...

Evaluation of protective efficacy of live attenuated Salmonella enterica serovar 1 Gallinarum vaccine strains against fowl typhoid in chickens 2 3 Paweł Łaniewski, Arindam Mitra, Kemal Karaca, Ayub Khan, Rajeev Prasad, 4 Roy Curtiss III, Kenneth Roland 5 6 The Biodesign Institute and School of Life Sciences, Arizona State University, 7 Tempe, AZ, USA 8 Global Biological Research and Development...