Scientists have developed a method of determining
whether eggs labelled as ‘free range’ or ‘barn’ have, in fact, been laid under
battery conditions. The procedure, published in Journal of the science of food
and agriculture, means eggs can be tested without the need to visit farms.
The give-away is the dust that the eggs pick up from
the surface on which they are laid. Because the eggs are wet when freshly laid,
the dust...
Saturday, 26 September 2015
Test to distinguish between battery and free range eggs without visiting the farm
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Labels:
barn eggs,
free range eggs,
Washing eggs
Enriching chicken with vitamin E
A group of sicentist working in Barcelona, Spain, have found
that the vitamin E level in chicken meta can boosted by feeding higher levels
of a-tocopheryl acetate to the birds. Furthermore, the content was maintained,
even after 7 months of storage at minus 20oC. The meat could supply
about 25% of the recommended dietary allowance.
A factorial design was used for the experiment: three
different dietary fat sources (beef tallow,...
Why is the avian flu virus so dangerous for humans
Scientist have established a theory why the H5N1 strain of
avian influenza (AI) virus is so dangerous for himans. The disease so far has
been fatal in more than half of the people who have contracted it since 2003.
The explanation lies in the patient’s viral load and the
subsequent inflammatory response, say researcher from the Oxford University
Clinical Research Unit in an article published in Nature Medicine.
Dr Menno de...
Friday, 25 September 2015
Egg turning angle and prequency impact on embryo position
In a co-operative project between the universities of Ankara,
Turkey and North Carolina State, USA, it was concluded that the incidence of
malpositioned embryos was increased by a reduced turning angle. However, the
effects was ameliorated by increasing the frequency of turning. The work was
reported by Drs Elibol and Brake.
Two experiments, each comprising two trials, were carried out
to determine if a turning angle of less...
Foot pad dermatitis could be eliminated trough breeding
Interesting work by a group of Danish researchers
hints that it may in future be possible to select against the susceptibility of
broiler to foot pad dermatitis (FPD) without adversely affecting performance.
Scientist at the Danish Institute of Agricultural
Science in Tjele found that, at 0.31, the heritability for susceptibility to foot
pad dermatitis pad lesions was quite high compared to the heritability for body
weight....
Salmonella infection affected by moulting
Using a tissue culture procedure, scientist at the
USDA in Athens, Georgia, USA, have concluded that moulting may affect the
invasion of tissues by Salmonella enteris
(SE) in laying hens.
They conducted three identical trials in which
80-week-old, active laying hens were divided into two groups of 6 birds each.
The moulted group was subjected to a 14-day period of feed withdrawal, and the
fully-fed group was offered a standard...
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