Showing posts with label Egg yolk colour. Show all posts
Showing posts with label Egg yolk colour. Show all posts
Tuesday, July 03, 2018
The reality of free range eggs
Academic researchers often produce theories and reports designed to demonstrate what 'free range' means in the egg industry. Celebrity chefs usually confine themselves to mistaken comments that bright yolk colour defines that an an egg is free range. The fact is that Yolk colour varies, depending on the hen’s diet. If the yolk colour is always a bright, golden almost orange colour, the hens have almost certainly been fed colouring additives. Academic findings are usually based on carefully arranged criteria set by an organisation which funds the research and expects specific outcomes. Far better to rely on the experience of those in the industry actually running free range egg farms. Some people are fixated on the issue of animal welfare and they lose sight of matters like food safety and land sustainability. Outdoor stocking density is a key example. Academics found it easy to come up with results from research on small scale or short term projects to demonstrate that stocking densities had little or no impact on hen welfare. But it has been impossible for them to demonstrate that high densities had no detrimental impact on pasture quality, pollution of waterways, groundwater and the long term productivity of the land as a result of excessive nutrient loads. The maximum sustainable stocking density for poultry has been established at 1500 hens per hectare to minimise land degredation and ensure the long-term viability of the land.
Laying hens, like most if not all other animals, perform best when they are able to follow their natural behaviour. They clearly need shelter, food and water but they also need to wander around freely to forage, scratch, dust bathe and interact socially with others in the flock.
Tuesday, May 30, 2017
Look out for colouring additives in food
It's not only the colour of egg yolks which is manipulated to make them look more attractive to consumers. Chart from Kitchen Table Scraps. The same additives are used by fish farmers. Wild salmon forage for crustaceans, plankton and algae that contain naturally occurring colourful carotenoid plant pigments. Farmed salmon, are fed an artificial soy- and corn-based diet devoid of these natural pigments, which means their flesh has little colour. To prevent consumer rejection of the product, salmon farmers add canthaxanthin and astaxanthin to the fish feed to boost the colour. Meat producers also use a few tricks to make their products more appealing – such as bleaching chicken to make the flesh white, even though colouring additives have often been included in the diet to produce yellow skins which some producers think is wanted by consumers. Frequently red meat is sealed in airtight packages treated with carbon monoxide to maintain a bright red colour for weeks.
The best solution is to limit shopping in supermarkets to household items like toilet paper. Toothpaste and cleaning products. Buy all fresh food from trusted suppliers – butchers, fishmongers and greengrocers.
Tuesday, February 23, 2016
Manufactured colouring additives used in poultrry feed to fool consumers.
Sydney6s Daily Telegraph ran a story alerting consumers to t he widespread use of colouring additives in chook food to enhgance the colour of egg yolks in eggs.http://l.facebook.com/l.php?u=http%3A%2F%2Fwww.dailytelegraph.com.au%2Fnews%2Fnsw%2Fthe-yolks-on-us-aussie-eggs-not-all-theyre-cracked-up-to-be%2Fnews-story%2Fcb038b4467c8aa07fa8d130e8dcb97d3&h=8AQET8iiT&enc=AZN--fbuHvPoi4rUrXLy2RMRgQb6XcVpyA_3sGdmyriIbT9b7Pjwc4gw86xUCNfpVw0fEGDplzfSR5v6OSRlxVeXe6rSYIUUJiuvReadeXpz1bEnL8uOb6bgDq7PjxDQ2LFbZCIw908lZ5uTvTvcT1OnIzixxGucpF9zar4-xOZZpWtlsjNw4wX3RfjTcmO06n7xHi7DW7pI82FmblZpprUh&s=1
We have been concerned about this for years as many people have allergic reactions to some of the colouring agents
Friday, February 14, 2014
Consumers ripped-off by some egg producers
The gullibility of consumers never
ceases to amaze me. Most just accept the marketing blurb provided by
producers – even at Farmers' Markets.
Recent hot weather has been used as an
excuse by some egg producers to put manufactured colouring additives
and meat meal in their poultry rations. (Many others have been doing that for years).
Now more than 95% (and it's probably
99%) of egg producers, even those which claim to be free range, are
using additives to enhance yolk colour as hot conditions have dried
off the pasture on which the hens are supposed to roam.
They have looked for a solution which
is low cost and easy rather than go to the extra effort (and cost) of
supplementing existing feed with green leafy vegetables, pumpkins,
carrots and lucerne meal or sprouted grains.
Here's a Facebook post by an egg
producer which provides an 'excuse' for its decision: “Please
note that we have an immediate change in poultry diet based on
veterinary and animal nutritionist’s advice due to severe heat
stress caused by prolonged 40’C + temperatures.
Our feed ration needs to include soluble meat protein and natural pigmentation (which is the norm in the egg industry). The extreme heat has decimated our green pasture and caused weight loss in flocks and as such we have no alternative but to implement these changes to our farming practices”.
Our feed ration needs to include soluble meat protein and natural pigmentation (which is the norm in the egg industry). The extreme heat has decimated our green pasture and caused weight loss in flocks and as such we have no alternative but to implement these changes to our farming practices”.
The big difficulty with colouring
additives is that although some may be based on natural products,
they are manufactured in laboratories or factories (often in China)
and concentrated in powder or liquid form. Many of them generate
allergic reactions or sensitivities – which lead people to think
that they are allergic to eggs.
We can provide details about the allergic properties of the commonly used additives.
The use of meat meal is also an issue
as poultry products are frequently used by the feed mills.
Saturday, November 16, 2013
Sorghum v Corn in poultry feed may lead to more colouring additives
Scott Beyer, PhD, a
researcher at Kansas State University in the US has found that grain
sorghum varieties compare favourably to corn in low-cost feed
formulations. Old varieties of grain sorghum contained relatively
high amounts of the anti-nutritional compound, tannin. The presence
of tannin in poultry feeds is known to suppress growth and
performance of all types of poultry. Tannins bind to proteins and
render them less available for metabolism.
Over decades of research, sorghum varieties that contained various levels of tannin were used to compile tables and other references for the feeding value of sorghum compared to corn. Many nutritionists continue to think of it as a lesser grain although new varieties have been introduced with high relative nutrient values. Some varieties of grain sorghum containing significant quantities of tannin are still around but varieties are grown for animal feed that are 99 percent free of tannin.
The nutrient profile of sorghum is complementary to protein sources typically used in poultry rations anywhere in the world, and is very similar to corn. Amino acid digestibility compares favourably with corn. The fat content of grain sorghum and the energy value for poultry is slightly lower when compared to corn. However, this difference can be balanced in rations with other sources of energy.
The big drawback with replacing corn with sorghum is that it contains smaller quantities of yellow xanthophylls required for egg yolk pigmentation – which means that even more egg farmers will resort to adding colouring additives to enhance yolk colour.
Over decades of research, sorghum varieties that contained various levels of tannin were used to compile tables and other references for the feeding value of sorghum compared to corn. Many nutritionists continue to think of it as a lesser grain although new varieties have been introduced with high relative nutrient values. Some varieties of grain sorghum containing significant quantities of tannin are still around but varieties are grown for animal feed that are 99 percent free of tannin.
The nutrient profile of sorghum is complementary to protein sources typically used in poultry rations anywhere in the world, and is very similar to corn. Amino acid digestibility compares favourably with corn. The fat content of grain sorghum and the energy value for poultry is slightly lower when compared to corn. However, this difference can be balanced in rations with other sources of energy.
The big drawback with replacing corn with sorghum is that it contains smaller quantities of yellow xanthophylls required for egg yolk pigmentation – which means that even more egg farmers will resort to adding colouring additives to enhance yolk colour.
Monday, May 27, 2013
Accreditation, egg substitution and deception
Egg substitution has been rife for
years but probably first came to general notice in Victoria during
2007 with a high profile case when a company was fined for labelling
eggs as organic when they were from conventional farms.
In 2012, a NSW barn egg farm was fined
for packaging its eggs as free range and a South Australian egg
seller was fined for putting cage eggs in free range cartons.
Also in 2012. An egg farm in WA was
caught with a huge overstocking rate which breached its planning
conditions. This farm was accredited by a national egg quality scheme but despite annual
audits which required compliance with planning conditions the farm
remained accredited. It's accreditation was only withdrawn once the
breaches became public and legal proceedings began.
In Victoria in 2012 inspection and
audit processes revealed that a farm which sold eggs to a major
supermarket was packing and selling non-accredited eggs from dubious
sources and that colouring additives were being used in poultry feed
– breaching particular standards.
Labels can also be misleading, with
pictures of hens frolicking on green pasture, which frequently
doesn't resemble conditions on the farm.
A questionable 'organic' accreditation
body also exists in Victoria which is not recognised by mainstream
organic bodies and which does not have a credible inspection process
– but it claims that the products which members sell are certified
organic. AQIS, which registers organic certification bodies in
Australia, is apparently only involved with export industries – so
it has no jurisdiction over domestic 'organic' claims.
Accreditation means different things to
different people. Consumers rightly expect it to convey a message of
credibility about a particular product, but to many businesses it's
simply a marketing tool designed to allow them to make claims which
increase their profits.
Similarly, a logo can be a valuable
asset if it is trusted by consumers. But it's value can be destroyed
if it is shown to be meaningless. Any accreditation program is only
as good as the willingness of the accreditation body to maintain its
standards and defend its logo.
That is why it is so disappointing that
standards are ignored by accreditation bodies. Even using things like
egg yolk colourings should be disclosed to consumers. Everyone
expects cage farms to use them to enhance yolk colour but it is not necessary on a genuine free range farm with low stocking
densities and plenty of green feed. It needlessly puts consumers at risk.
To maintain ethical standards and
credibility, all certification bodies need to defend their standards
and take action against members who break the rules.
The Australian Competition and Consumer
Commission has sent out notices to many egg producers, requiring them
to justify the claims made on their packaging – claims such as
'free range'.
Hopefully this will start a 'clean-up'
process.
Labels:
colouring additives,
egg substiution,
Egg yolk colour,
organic
Tuesday, May 14, 2013
Problems with colouring in eggs
As this is Food Allergy Awareness Week in Australia, it is worth looking at the widespread use of colouring additives. All major egg
producers and many small ones - even those which claim to be free
range and organic - use colouring additives in the feed they give
their hens. Some members of the Free Range Farmers
Association have been deliberately using those additives for more
than a year – even though the use of manufactured colourings is a
clear breach of the Association's standards.
The use of those additives is
completely unnecessary in a free range flock, as hens running on
quality pasture and at low stocking densities will obtain enough
carotenoids from the green feed in the paddock to maintain good yolk
colour. The colour will vary – depending on the time of year and
what each hen has been eating – but many egg producers want to con
consumers by using additives to provide consistent, bright yolk
colour.Many of those additives are synthetic - adding to the chemical cocktail mix in food. But even those which are claimed to be 'natural' are manufactured in factories – often in China. What the manufacturers mean by using the word 'natural' is that the additives may be derived from natural products but are processed and concentrated into a powder or liquid.
Three of the most widely used egg yolk pigmenters are:
Canthaxanin or Canthaxanthin which appears to be an unsafe additive. It can cause diarrhoea, nausea, stomach cramps, dry and itchy skin, hives, orange or red body secretions, and other side effects.
Do not use canthaxanthin if you experience breathing problems; tightness in the chest; swelling of the mouth, tongue or throat; a skin rash or hives; you are pregnant or breast-feeding or you are allergic to vitamin A or carotenoids.
Capsicum Allergic reactions to capsicum may occur. Stop eating eggs with capsicum-based colouring and seek emergency medical attention if you experience symptoms of a serious allergic reaction including difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives.
Other less serious side effects have also been reported. Talk to your doctor, pharmacist, or health care provider if you experience upset stomach; heartburn; diarrhoea; migraine attacks or burning sensation in the mouth or throat.
Use of Capsicum is not recommended if you are pregnant. If you are or will be breast-feeding while eating food containing Capsicum, check with your doctor or pharmacist to discuss the risks to your baby.
Capsicum colourings can bring on anaphylactic shock. See details from the University of Maryland:
http://www.umm.edu/altmed/articles/anaphylaxis-000008.htm
Marigold Some people experience breathing problems, tightness in the chest, swelling of the mouth, tongue or throat. A skin rash or hives may occur.
From
the Auckland Allergy Clinic
Article
written: September 2001
Salicylate
sensitivity is the body’s inability to handle more than a certain
amount of salicylates at any one time. A salicylate sensitive person
may have difficulty tolerating certain fruits or vegetables.
What
are salicylates?
Salicylate
is a natural chemical made by many plants. It is chemically related
to aspirin, which is a derivative of salicylic acid. It is believed
the plant uses it as protection from insects, and they are everywhere
around us.
Although
natural salicylates are found in wholesome foods, some individuals
have difficulty tolerating even small amounts of them. The reaction
to a natural salicylate can be as severe as that to a synthetic
additive if the person is highly sensitive. Some people are troubled
by only a very few, but some are troubled by all of them.
What
is salicylate sensitivity?
Some
adults and children have a low level of tolerance to salicylates and
may get symptoms that are dose-related. The tolerated amount varies
from one person to another. This is an example of food intolerance.
What
are some of the symptoms of Salicylate Intolerance?
•
Asthma
•
Nasal
Polyps
•
Sinusitis
•
Rhino
conjunctivitis
•
Stomach
aches and upsets
Foods
containing Salicylates
Salicylates
occur naturally in many fruits, and vegetables as a preservative, to
prevent rotting and protect against harmful bacteria and fungi. They
are stored in the bark, leaves, roots, and seeds of plants.
Salicylates are found naturally in many foods and its compounds are
used in many products.
All
fresh meat, fish, shellfish, poultry, eggs, dairy products, cereals,
bread are naturally low in salicylates
Foods
with very high Salicylate content include:
Vegetables:
Capsicum
Hot Peppers
|
Capsaicin Factsheet
http://npic.orst.edu/factsheets/Capsaicintech.pdf
A UK report on
The
Adverse Effects of Food Additives on Health, published
in the Journal of
Orthomolecular Medicine described surveys
on food intolerance which showed that as many as 2 in 10 people
believe that they react badly to certain foods or to their
constituents, whereas less than 2 in every 100 has been considered to
be the official figure.
However, a recently published report
indicates that small children are much more likely to react to
certain foods. Although the exact numbers are not known, surveys
suggest that one child in 10 may be affected in some wayOf the nearly 4000 different additives currently in use, over 3640 are used purely for cosmetic reasons and as colouring agents.
The continued reason for the use of additives is based
on the argument that they are present in foods on such a minute scale
that they must be harmless.
This argument may be almost acceptable regarding
additives with a reversible toxicological action. However, with
additives which have been found to be both mutagenic and
carcinogenic, neither the human nor animal body is able to detoxify.
Therefore even very minute doses of these additives, when consumed
continuously, will eventually result in an irreversible toxic burden,
resulting finally in cancer formation and/or in chromosomal and foetal
damage. This is unacceptable, particularly as the majority of these
dangerous agents belong to the food colouring group.
The full report is available here:
An allergy
is a hypersensitity disorder of the immune system. Allergic
reactions occur when a person's immune system reacts to normally
harmless substances in the environment. A substance that causes a
reaction is called an allergen. These reactions are acquired,
predictable, and rapid. Allergy is one of four forms of
hypersensitivity and is formally called type 1 hypersensitivity.
Allergic reactions are distinctive because of excessive activation of
certain white blood cells.
Mild
allergies like hay fever are very common in humans but allergies can
play a major role in conditions such as asthma. In some people,
severe allergies to environmental or dietary allergens may result in
life-threatening reactions called anaphylaxis.
Friday, October 19, 2012
Colouring additives in most of the eggs you buy
All major egg
producers and most small ones - even those which claim to be free range -
use colouring additives in the feed they give their hens.
It is completely
unnecessary in a free range flock, as hens running on good pasture
and at low stocking densities will obtain enough carotenoids from the
green feed in the paddock to maintain good yolk colour. The colour
will vary – depending on what each hen has been eating – but many
egg producers want to use additives to provide
consistent, bright yolk colour.
Many of those
additives are synthetic - adding to the chemical cocktail mix in
food. But even those which are claimed to be 'natural' can present health problems. They may be derived
from natural products but they are manufactured in factories –
often in China.
Three of the
most widely used egg yolk pigmenters are:
Canthaxanin or Canthaxanthin
which appears to be an unsafe additive. It can cause violent diarrhea,
nausea, stomach cramps, dry and itchy skin, hives, and other side effects such as breathing problems; tightness in the chest; swelling
of the mouth, tongue or throat; a skin rash or hives and is particularly dangerous for pregnant or breast-feeding women or people allergic to vitamin A or
carotenoids.
CapsicumAllergic reactions to capsicum may occur. People should stop eating eggs with capsicum-based colouring and seek emergency medical attention if they experience symptoms of a serious allergic reaction including difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives.
Other less serious side effects have also been reported such as upset stomach; migraine; heartburn; diarrhea; or burning sensation in the mouth or throat.
Use of Capsicum is not recommended for pregnant women.
Marigold
Some people experience breathing problems, tightness in the chest, swelling of the mouth, tongue or throat. A skin rash or hives may occur.
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