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the egg pack by mifei


									Egg           facts

     th e inside story
        for health
 e gg s
          egg farming
 the egg pack
   look for the Lion
inside                                                                                                                                                                 eggs
                   story                                                                                                                                                              health

                                                                              Air Cell           As one of the most complete, naturally produced foods,
                                                                                                 eggs provide many of the essential nutrients for a balanced diet.

        Vitelline                                                             Shell
        Membrane                                                          Membrane
                                                                                               Protein                                         Vitamins
                                                                                               Protein makes up half of the solids content     Eggs are rich in Vitamin D,Vitamin A,Vitamin
                                                                                               of an egg and a medium egg contributes          E, and many ‘B Vitamins’ especially riboflavin
                                                                             Egg Cell          about 12% of the daily amount of protein        (B2),Vitamin B12 and folate. Vitamin C is
                                                                                               needed for a man and 14% of the amount          the only vitamin not contained in an egg.
                                                                                               of protein needed for a woman. Eggs
        Yolk                                                                                   contain all eight indispensable amino acids     Minerals
                                                                                               needed by the body - isoleucine, leucine,       Eggs contain minerals phosphorus, iron,
        Chalazae                                                            White or           lysine, methionine, phenylalanine, threonine,   calcium and zinc as well as essential trace
                                                                            Albumen            tryptophan and valine. As a result egg          elements including iodine and selenium.
                                                                                               protein is the highest quality food protein
                                                                                               and is the standard by which other proteins     Energy (Calories)
                                                                                               are judged.                                     A medium egg has an energy value of 78
                                                                                                                                               kcals (324 kilojoules).
Shell                                           The Yolk
•	Prevents damage to the egg                    •	This is full of goodness and has a higher    Cholesterol
                                                  concentration of protein than the white      Some people have had reservations in
•	Acts as a shield against bacteria
                                                                                               the past about eating eggs due to their
Shell Membrane                                  White or Albumen                               cholesterol content, but it is now recognised
•	There are two membranes – the outer and       •	If you crack an egg, you can see two types   that eating too much saturated fat is more
  inner membrane. Their job is to act as          of white - the thick white ‘stands up’ and   likely to raise blood cholesterol than eating
  filters to help the shell keep the egg in       the thin white runs towards the edge         foods rich in dietary cholesterol.
  good condition
                                                The Egg Cell or Germinal Disc                  Most people on a healthy balanced diet
The Air Cell                                    •	This is the part of the egg which would      can eat an egg a day without raising blood
•	This is at the rounded end of the egg           have developed into a chicken if it had      cholesterol levels.
                                                  been fertilised
•	As the egg ages, it loses water and air is
  drawn in to replace it so the air pocket      •	You can see the egg cell when you crack an   Fat
  gets bigger                                     egg. It is the tiny speck on the surface     Eggs contain about 11% fat, 55% of which
                                                                                               comes from unsaturated fatty acids and only
•	The smaller the air cell, the fresher the     The Vitelline Membrane                         29% from saturated fatty acids. Eggs are
  egg. A fresh egg will not float but a stale   •	This holds the yolk together
  egg will                                                                                     therefore relatively low in saturated fat -
                                                The Chalazae                                   only 1.6g in a medium egg.
•	When you shell a hard-boiled egg you can
  see from the shape of the egg how big the     •	These are strands attached to the thick
  air cell was and how old the egg is             albumen which ‘anchor’ the yolk in the
                                                  middle of the egg
egg         farming
                                                                                                                                                                                           egg          pack

                                                                                                  Class                                                    Size
  Eggs are produced in three main systems – laying cages,                                         Under EU regulations there are two quality               Class A eggs are weight graded according to
                                                                                                  grades of eggs: A and B.                                 the table below.
  barn and free range.
                                                                                                  Class A eggs are the highest grade. They                 Medium and large are the most commonly
                                                                                                  are naturally clean, fresh eggs, internally              used and most recipes are based on these
                                                                                                  perfect with shells intact and the air sac not           sizes.
Laying cages are the most common                  In the barn system the hens are free to         exceeding 6mm in depth. The yolk must not
method of commercial egg production               roam inside the barn. The house has a                                                                      Very Large            73g and over
                                                                                                  move away from the centre of the egg on                    Large                 63g up to 73g
in the UK. Typically a laying cage system         series of perches and feeders at different      rotation. Class A eggs are sold as shell eggs.             Medium                53g up to 63g
consists of a series of at least three tiers of   levels. There is one nest box per five birds                                                               Small                 under 53g
cages. The cages have sloping mesh floors so      or communal nests, at the rate of 120           Class B eggs are broken out and pasteurised.
that the eggs roll forward out of the reach       birds /m2 of floor area of communal nest,       In addition, there is another class of eggs              Regulations
of the birds to await collection. Droppings       are provided. Water and feeding troughs         called industrial eggs which are for non-food            EU regulations control the obligatory
pass through the mesh floors onto boards,         are raised so that the food is not scattered.   use only and are used in products such as                information to be included on egg packs and
belts or into a droppings pit to await            Electric lighting is provided to give an        shampoo and soap.                                        eggs to be sold from trays (or loose).
removal.                                          optimum day length throughout the year.
In conventional cages a minimum of 550cm2         Free range hens are raised in a similar
per bird is required. Since 2003 only             way to barn hens, except that they must           III         I                V         II   IX           Farming Method                Country of Origin
installation of enriched cages has been           also have continuous daytime access to                                                                     0 = Organic                             e.g UK
                                                                                                                                                             1 = Free Range
allowed with 750cm2 per bird along with a         outside runs which are mainly covered                                                                      2 = Barn
                                                                                                            FREE RANGE
nest, perching space and a scratching area.       with vegetation. Organic eggs are laid by                                                                  3 = Cage
Many of the new enriched colony cages             free range hens fed an organic diet.            VIII
contain 40-60 birds giving them more room
to move around in a colony.
                                                                                                                              FREE RANGE             VII

                                                                                                                         IV                     VI                                                  Farm ID
                                                                                                                                                                                             A specific code
                                                                                                    I      Quantity of eggs packed                            Optional Information             denoting the
                                                                                                    II     Designation of the size - eg Large                 Lion Mark                          actual farm
                                                                                                    III    Indication of quality such as Class A              British eggs from hens        where your eggs
                                                                                                    IV     Registered number of the packing station.          vaccinated against             were produced
                                                                                                           The first part gives EU country of origin.         salmonella and produced to
                                                                                                           This is followed by a regional number and          a strict Code of Practice
                                                                                                           the packing station identification number
                                                                                                    V      Name and address of the undertaking which          Best Before Date
                                                                                                           has packed the eggs or had them packed.
                                                                                                    VI     Best before date
                                                                                                    VII    Advice to consumers to keep eggs
                                                                                                           refrigerated after purchase.
                                                                                                    VIII   Method of production
                                                                                                    IX     (0 = Organic, 1 = Free Range, 2 = Barn,
                                                                                                           3 = Cage). The key to the code on eggs
  for   the lion
  The Lion mark denotes eggs produced to a stringent Code of Practice
  incorporating the latest research and advice on Salmonella and eggs
  from scientists and vets. British Lion eggs account for around 85% of
  UK egg production.

•	All hens producing Lion Quality eggs           •	The Lion Code of Practice includes
  are vaccinated against Salmonella                stringent feed controls, and the banning
  Enteritidis.                                     of growth promoters, canthaxanthin (yolk
                                                   colourant) and lasalocid coccidiostat in
•	A registration and ‘passport’ system
                                                   feed for laying birds.
  ensures complete traceability of Lion
  Quality eggs, hens and feed.                   •	The Lion Code of Practice is monitored
                                                   by an independent agency in accordance
•	There are increased hygiene controls
                                                   with the EN45011 standard. Farms and
  and Salmonella testing right through the
                                                   packing stations are regularly audited
  production system.
                                                   including unannounced audits.
•	The Lion Code of Practice also
                                                 •	A survey of UK–produced eggs by the
  incorporates higher standards of animal
                                                   Food Standards Agency in 2004 found
  welfare than required by law.
                                                   no salmonella in 28,000 eggs tested.
•	A best-before date and Lion logo must be
  printed on the shell of Lion Quality eggs,
  as well as on the egg box, as a guarantee
  of freshness.

                               British Egg Information Service 020 7052 8899
                         For more information and recipes visit
                 For more information for students and teachers visit
                 To find out more about where your egg was laid, visit

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