B—Lancaster Farming. Saturday, June 19.1971
Speakers See 'Recycled Nutrients' as Pollution Solution
The concept of waste recycling
was the center of attention at
the Wednesday afternoon session
of the Pennsylvania Poultry Fed
eration meeting
Dr. Charles L Hosier, dean of
earth and mineral sciences. Penn
State University, began the dis
cussion with a description and
slide preesntation of how only
minor changes in atmospheric
conditions could lead to serious
changes in rainfall in the U S ,
leading to drought and severe
crop reductions He indicated
that manmade and growing pol
lution levels in the atmosphere
can lead to disastrous weather
conditions, including drought
He was particularly critical of
state laws which ban study of
weather He said this study may
be necessary in the future to off
set some of the problems which
ere being caused by growing
levels of pollution
Pointing to other countries
which once had highly developed
end wealthy civilizations, Dr
Hosier said the same thing could
happen to the U S. if the environ-
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17537
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ment changes He said past ex
perience in other parts of the
v oild show man’s activities can
lead to weather pattern changes.
Dr. Howard Zindell, Michigan
State poultry science depart
ment, spoke on work in Michigan
to convert animal waste into an
important protein source
Predicting that within five to
10 years “every state will have
a law against spreading manure
in its present form on the land,”
Dr Zindell said a feasible alter
native now appears to be to dry
the manure and recycle it in
poultry and animal operations.
Studies show that dried poul
try waste has about 33 pei cent
crude protein which breaks
down into about 12 per cent
usable protein for poultry, a
figure still higher than corn
Experiments so far show that
best gams are achieved from a
combination of one-half urea and
one-half recycled nutrients, he
said The process is called “re
cycled nutrients” because it de
scribes without offending, he ex
plained.
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Study also shows that the old
er the waste, the poorer the
quality or feed value of the final
product This indicates a need
foi a continuous recycling pro
cess, he explained.
The Michigan research in
volves feeding the manure and
“this results in a new ingred
ient, he said.
John Bergdoll, Anderson Box
Company, explained his firm’s
experience with ia new Colman
Rotary Manure Dryer He said
tne problem with early manure
drying systems has been that
tney haven’t been able to hold up
over time, but he indicated his
firm’s system will do the ]ob
Another problem, he said, is
gettmg the manure to the dry-
er He said an auger system is
good for short hauls and con
veyor systems have shorn prom
ise, but a gutter is needed.
He indicated that pre-drying,
such as the work being done at
Cloisterdale Farms at Ephrata,
is a help, since wetter manure
reduces the capacity of the dry
er. While waste normally runs
about 75 per cent moisture, stems from moving the waste to
Cloisterdale’s system reduces it the diyer ’
He indicated that getting tile
Bergdoll recommended drying to a 10 per cent dry level
to the* 10 to 12 per cent level -11 cost $l5 to *35^ iton. The
He rained against drying i J
lower than 10 per cent, if Jjs operator of . a
gomg to be . ,t°pom- 25,000 or more bird operation,
fertilizer, be y = which is in a position to recycle,
pletely e imma.e any lt affQrd be mthQUt
Xh e l saTd U r h n°o U ted S S «. A 40,00 bird operation will
-f iho pay for a dryer m one year/he
people in many parts of the ±- * j ’
country prefer this type of or- sa i tf t he _ aid
StacT '""‘"fa, m t ., C '“ n Midu 3 Tn a™ mlness of the raMUra, cost
sans .. M*. <0.J199 a h„n- »" “ £ %£%£*
died pounds, Richard Chumney, assistant to
to 30 per cent.
While drying the manuie the New Jersey secretary of
with a new operation specifically agriculture, concluded the after
designed for it can be very eco- noon session with a wrap-up on
nomiacl, converting existing the importance of ecology and
houses can be quite expensive, economics to the poultry indus
he indicated The cost primarily (Continued on Page 9)
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