OIE ad hoc Group Animal Welfare and Laying Hen Production Systems – Chapter 7.Z – November 2017
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Aerosol Transmission of an Avian Influenza H9N2 Virus with a Tropism for the Respiratory Tract of Chickens
In total, 432 thirty-six-week-old laying hens were fed a basal diet supplemented with mannan-oligosaccharide (MOS) or an essential oil mixture …
The H9N2 avian influenza virus (AIV) subtype has become endemic in Israel since its introduction in 2000. The disease has …
Salmonella enterica serotype Enteritidis is the predominant serotype associated with egg-borne salmonellosis in humans. Apparently this serotype possesses particular characteristics …
The aim of this preliminary work is to reach to a cleaner production of intact shell-table eggs free from Salmonella …
This study was carried out to evaluate the performance and egg quality of laying hens in their second laying cycle submitted to different forced-moulting methods and three environmental temparatures. Six hundred layers were distributed in a completely randomized experimental design with 15 treatments with five replicates of eight birds each, according to 5×3 factorial arrangement …
Laying hens usually select an elevated position for resting at night-time. A previous study showed that the position a hen …
In this study, the effects of the inclusion of different vitamin C levels in the diet on bone mineral density …
Birds dissipate considerable heat through respiratory-evaporative and cutaneous-evaporative mechanisms and sensible heat loss (SHL) via radiation, convection, and conduction. The significance of SHL in laying hens is still to be confirmed. This study aimed to elucidate the effect of ventilation on egg production and quality during exposure to high ambient temperature. Lohman laying hens were …
In spite of the large amounts of money invested in research, breeding, and the improvement of commercial egg-type strains, high …