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Southern Wisconsin Cheesemakers' and Dairymen's Association / Proceedings of the ninth annual meeting of the Southern Wisconsin Cheesemakers' and Dairymen's Association held at Monroe, Wisconsin, Thursday and Friday, March 11 and 12, 1909

Ottis, D. A.
Important factors in the selection of our feeding stuffs,   pp. 37-44 PDF (1.4 MB)

Page 38

F). It will be noticed froti this table that clover hay
contains more calories per 100 pounds than does corn meal
but it will also be noticed that the losses in the case of
clover hay are much greater than in the case of corn meal
and that the remainder of the energy available for the use
of the animal in its digestive and assimilative processes is
much greater in corn meal. The digestibility of a feed is
a vital point in measuring its value as it is the only part
of the feed that can be used in the nourishment of animals.
An animal hard at work needs to be fed plenty of grain
in order to furnish the mlxii:nim pounds of nutrients it is
able to handle.
Facility of Digestion.
Many authorities measure the value of feed by its total
digestible nutrients.  This has been proved not to be
entirely correct f )r alth)ug'i a feed is digestible, it may
contain more bulk, require a large amount of energy in
chewing, in secreting digestive juices, and in warming up
extra water for a suitable solvent. This is called by some,
'the facility of digestion". At the Connecticut Experiment
Station (Storrs) a n exp riment was carried on witlI two
1,000 pound cows fed on a maintenance ration of 64 pounds
of corn meal containing 41 pounds of digestible nutrients.
The same cows required for maintenance 13i pounds of
mixed hav containing 7.1 pounds of digestible nutrients.
In this instance I pound of digestible nutrients in corn was
equal to 1.57 pounds in mixed hay. Another experiment
with pigs resulted in 239 pounds of digestible nutrients
in skim milk to produce 100 pounds of gain. With skim
milk and shorts there were required 258 pounds of digestible
nutrients and with shorts 2114 pounds.
All things considered, milk would rank first in facility
of digestion, by concentrates, second and roughage, third.
With roughage the f icility of digestion is greater with
early cut than late cut hay, is greater with silage than
corn stover.
An experiment with horse, by Zuntz and Hagerman of

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