Combination of Live and Inactivated Vaccines to Protect Against Fowl Typhoid in Laying Hens.

Fowl typhoid (FT) caused by Gallinarum (SG) is a poultry disease distributed worldwide that has been eradicated in commercial production of many developed countries but still persists in many developing countries. Vaccination is one of the main strategies to reduce mortality, clinical signs, and vertical or horizontal transmission. The aim of this work was to assess the protection against FT conferred by vaccines based on Enteritidis (SE), SG, or a combination.

Use of adjuvant ISA VG 71 to produce neutralizing egg yolk antibodies against bothropic venom.

The use of egg yolk antibodies-IgY technology-represents an alternative to the production of mammalian immunoglobulins and has several advantages regarding animal welfare and lower costs of production. The use of adjuvants to achieve the hyperimmunization of laying hens plays a key role in the success of the production of high levels of the antibodies. In the present work, two different adjuvant systems (Freund's adjuvants and Montanide ISA 71 VG) were compared to produce IgY anti-Bothrops alternatus.

Virulence genes and antimicrobial susceptibility in Salmonellaenterica serotypes isolated from swine production in Argentina.

Salmonella is a worldwide-distributed pathogen that affects both humans and animals and is usually associated with intensive animal production such as poultry and swine. This bacterium carries different virulence genes, whose expression favors its interaction with the host and may influence the course of the infection. Extended usage of antibiotics for metaphylaxis or prophylaxis and as growth promoters favors the emergence of multiresistant Salmonella strains.

Efficacy of chestnut and quebracho wood extracts to control Salmonella in poultry.

Aims: The study was aimed to evaluate the antibacterial activity and efficacy of chestnut and quebracho wood extracts against Salmonella by in vitro assays and in vivo trials.

Methods And Results: The extracts showed inhibitory activity against Salmonella determined by the minimum inhibitory concentration method as well as on the adhesion and invasion of S. Gallinarum (SG) and S.

SAFIIRA: A heavy-ion multi-purpose irradiation facility in Brazil.

This work describes the new facility for applied nuclear physics at the University of Sao Paulo, mainly for irradiation of electronic devices. It is a setup composed of a quadrupole doublet for beam focusing/defocusing plus multiple scattering through gold foils to produce low intensity, large-area, and high-uniformity heavy-ion beams from H to Ag. Beam intensities can be easily adjusted from 10 particles cm/s to hundreds of nA for an area as large as 2.