Mortality prediction of laying hens due to heat waves

Nutrition/Mortality Interactions in Laying Hens

A laying trial compared two Australian egg laying strains with an imported brown egg layer. They were fed a high quality diet recommended for the imported bird or a good Australian layer diet. In addition, these two diets were fed in a free-choice system whole wheat, protein concentrate and limestone chips. The birds throughout received standard husbandry regarding vaccinations and lighting. Al...

VIGOSINE: Management of Heat Stress in Broilers and Laying Hens

Laying hens go undercover to improve production.

DURING 2007, all laying hen producers within the McDonald’s Restaurants UK supply base (McDonald’s Restaurants UK source eggs from free-range UK producers) were required to plant, if not present already, 5 per cent of the total range area in trees. Noble Foods supply free-range eggs into a variety of food retailers not all of which require tree cover on the range. In this study, the authors inv...

Causes of mortality in laying hens in different housing systems in 2001 to 2004

BACKGROUND The husbandry systems for laying hens were changed in Sweden during the years 2001 - 2004, and an increase in the number of submissions for necropsy from laying hen farms was noted. Hence, this study was initiated to compare causes of mortality in different housing systems for commercial laying hens during this change. METHODS Based on results from routine necropsies of 914 laying ...

Erysipelothrix rhusiopathiae in Laying Hens

The bacterium Erysipelothrix rhusiopathiae can infect a wide range of mammals (including humans) and birds. Disease outbreaks (erysipelas) have been considered unusual in chickens internationally, but outbreaks with high mortality and egg production losses have been diagnosed in Swedish laying hen flocks every year since 1998. Different aspects of E. rhusiopathiae infection in chickens were exa...