2013 milk market information shows that USA dairymen
produced 200.3 billion pounds of milk.
This raw milk volume contained 25.172 billion pounds
of milk solids: these are primarily
** Butterfat
** Protein ** Lactose ** Minerals
Thus, roughly 12.5% of the total volume of
milk as blended from farms’ production is milk solids leaving
roughly 87.5% as fluid carrier (ie, water that flushed these milk solids from
the mammary glands).
Of course, when we bottle milk as a beverage for
drinking (or to pour on morning cereal) (or to mix into casserole or cake
recipes), that “fluid carrier” still has a purpose as hydration. In 2013, 26.1% of milk
produced (52.3 billion pounds) went into a jug or bottle.
That left 148 billion pounds of milk whose processing
involves removing some or all of the water. It is this removal of water that is the
biggest single [energy] cost in the milk processing industry. It is in the transport of this excess water
that milk hauling costs are more burdensome to dairymen, and the price of milk
on your milk check is also proportionately reduced by the processing “make
allowances”.
Of the milk not bottled, 37.1% (74.3
billion pounds) is made into cheese of various forms. The average
cheese yield from commercial blended milk is 10%. Thus 74.3 billion pounds of raw milk gets
made into 7.45 billion pounds of cheese, leaving behind 66.85 billion pounds of
whey.
Whey will contain the milk solids not formed into
curds. It can be dried into a powder
that can be used in processed food or animal feed, as long as federal
environmental rules are met. Otherwise
it becomes an industrial waste and thus must be handled similarly to
sewage waste to recover the water.
18.9% of milk is “separated” (cream
removed). The cream is churned into butter
and the skim milk is dried into non-fat dry milk powder which
again will enter either human food or animal feed.
4.2% of milk becomes yogurt or
other “cultured cream” products.
4.1% of milk becomes ice cream or
other frozen packaged products.
This leaves 9.6% of milk that is processed
into a myriad of other forms (eg, evaporated milk) some of which have very low
value recovery, like pet food, or the result of rejected loads.
The genetics of increased value milk
We provide information on all milk components with
the exception of lactose (milk sugar):
Butterfat percent (bf%)
This is estimated to be 50% heritable, one of the higher traits measured
Protein percent (pr%) This is estimated to be 55% heritable, the
highest of measured traits
Somatic Cell Count
(SCS) Estimated at 15% heritability, lower values
lead to quality premiums
Beta Casein (A2 preferred) Directly heritable as a dual allele gene
pairing
Kappa Casein (B preferred) Directly heritable as a dual allele gene
pairing
Beta Casein is a health quality protein preferred
by those with various autoimmune diseases
Kappa Casein is the form of protein that produces
curds and will increase cheese yields 7% to 15%
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