By-Products

By-products are waste from the carcass that is not edible, but that can be processed in the manufacturing of other industry products.

 Category

 Example

 Utilisation

 Meat by products

 Blood, lungs, heart, kidney,
 brains, spleen and tripe
 (intestines)

 ·  Eaten as a delicacy by humans

 ·  Medications, due to the high content
    of amino acids, hormones, minerals,
    vitamins, and fatty acids.

 Ears and feet

 ·  Collagen and starch products

 Blood

 Blood and blood plasma

 ·  Blood sausages, blood meal, fertilizers,
     feedstuffs and binders.

 ·  Blood plasma is colourless and used in food
    as an emulsifier, replacing egg white.

 ·  Medication and pharmaceuticals.

 Hides and skins

 Cattle hides and sheep skin

 ·  Leather tanneries (up to 30% of the
    value of the animal), for leather
    products.

 · Gelatine in food, pharmaceutical and
    cosmetic industries

 ·  Dried pet food

 Bones

 Carcass bones from deboned meat

 ·  Marrow is used as a food

 ·  Provides gelatine for soups

 ·  Bone meal

 ·  Pet food

 Glands and organs

 Gall bladder, testicles, pancreas,
 fat glands, brains, liver, lungs, 
 pituitary,thyroid, pancreas,
 stomach, parathyroid, adrenal,
 kidney, corpus luteum, ovary
 and follicle

 ·  Food due to special taste and
    structure

 ·  Medicinal and pharmaceutical use

 ·  Progesterone and oestrogen  
    production

 ·  catgut, to make internal surgical
     sutures

 ·  Sausage casings

 Fat

 Tallow (hard fat rendered from the
  fatty tissues of cattle or sheep), and

 Lard (the fat rendered from the clean
  tissues of healthy pigs)

 ·  Edible fats

 ·  Deep frying

 ·  Margarine

 ·  Used in sausage and emulsified
    (minced) products