Animal Science Chapter 7 - By-products of meat animals

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what are the sources of the rendering industry?

packing and processing plants butcher shops restaurants supermarkets farmers ranchers

what are fatty acids used in?

plastic consumables cosmetics lubricants paints deodorants polishes cleaners asphalt inks

where is it passed through after that?

presses to remove fat

what are primary products in other countries? by-products?

primary products: work, milk, hides, skins by-products: meat (esp. in older animals)

what is poultry by-product meal high in?

protein and fat

what does the rendering industry do?

recycles offal, fat, bone, meat scraps, and entire animal carcasses

what is used for biodiesel?

rendered fats and oils

what is a primary use of hide or skin?

shoe leather

what are inedible tallow and greases used in?

soaps lubricants feed fatty acids

what does use of byproducts increase?

sustainability and efficiency

what are higher-valued inedible by-products?

tallow hides inedible organs

what do these options differ in?

they differ in cost and ease; differing laws regarding use

why must careful attention be paid?

to avoid cross-contamination of disease to humans or other livestock, to assure environmental quality, and to avoid odor

what holds these protein supplements?

typically monogastric animals because of their need for high quality protein

what affects the value of a hide or skin?

brands insects stains

what are acceptable disposable methods?

dead livestock removed by a licensed rendering company compost the carcass burn the carcass in an incinerator bury the carcass at least 4 ft. deep

what are byproducts classified into?

edible and inedible products

what is the most valuable byproduct?

hide

What are by-products in the US?

hides, fat, bones, internal organs

what happens to the offal after slaughter?

it is immediately transported to rendering facility where it is cooked to destroy all pathogenic organisms

what are fats used to produce?

lard and tallow

what kind of market is inedible tallows and greases?

large export market

what are products?

less value than the major product

what are variety meats?

liver heart cheek meat oxtail pigs feet tongue tripe chitlins sweetbread

what are the protein supplements of livestock?

meat and bone meal blood meal

what does increasing sustainability and efficiency do?

minimizes waste increases output for same input

what does the US export market yield on a yearly basis?

1.5 billion

how much of variety meats can an average slaughtered steer produce?

45 lb of variety meats

how much is pet food worth of by-products used annually?

8 billion

how much of the value of a fed steer are by-products?

8 to 10% value

what is the US per capita consumption of variety meats?

9 lb, thus some are exported

what are the two primary products of the rendering industry?

animal fat and animal protein

what are pharmaceuticals made from?

animal products and many are made synthetically

what does not go into human edible products?

animals that die during their productive life

what happens to the remaining material?

becomes poultry by-product meal


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