Cornell Nature-Study Leaflets: Being a selection, with revision, from the teachers' leaflets, home nature-study lessons, junior naturalist monthlies and other publications from the College of Agriculture, Cornell University, Ithaca, N.Y., 1896-1904New York State College of Agriculture
History
Cornell Nature-Study Leaflets: Being a selection, with revision, from the teachers' leaflets, home nature-study lessons, junior naturalist monthlies and other publications from the College of Agriculture, Cornell University, Ithaca, N.Y., 1896-1904
New York State College of Agriculture
Natural history; Nature study
If you cannot find the germ in these, soak them in water for several
days and then observe.
The following publications may be had from the Department of
Agriculture, Washington, D. C., on application:
Circular No. 46, Revised--The Functions and Uses of Food. By C. F.
Langworthy.
Circular No. 43, Revised--Food-Nutrients-Food Economy. The Cost of Food
as Related to its Nutritive Value. By R. D. Milner.
A PROBLEM IN FEEDING.
As our knowledge increases, we give greater attention to the economical
and efficient use of all feeds for live-stock. We cannot afford to feed
even the corn stalks carelessly, either for the immediate concern of the
pocket-book or for the good of the animal. The results of many
experiments in feeding lead to the conclusion that a suitable daily
ration for a cow giving milk and weighing 1,000 pounds should contain 24
pounds of dry matter, of which 2.5 pounds is digestible protein; .4
pounds digestible fat; and 12.5 pounds digestible carbohydrates. In such
a ration, the ratio of digestible protein to digestible carbohydrates in
the ration will be as 1 is to 5.4. In computing this ratio the amount of
fat, multiplied by 2.4, is added to the carbohydrates. The fiber and the
nitrogen-free extract constitute the carbohydrates. Individual animals
vary so much in digestive capacity and in other respects that the
foregoing standards may be frequently widely departed from to advantage.
Thus many animals will profitably use more than 24 pounds of dry matter
in a day and the ratio of protein to carbohydrates may vary from 1:5 to
1:6.5 without materially affecting the amount or character of the
product. Standards are useful as guides. The art of feeding and the
skill of the feeder consist in determining in how far the standard
should be conformed to or departed from in each individual case.
Suppose a farmer has corn silage and timothy hay, and may purchase
cotton seed meal, wheat bran and buckwheat middlings, how may they be
combined so that the ration shall contain 24 pounds dry matter, and the
ratio of protein to the carbohydrates shall be approximately 1:5.4? The
following table gives the data:
Water. Protein. Fiber. Nitrogen-free Fat.
extract.
In 100 pounds of silage[60]. 79.1 1.2 4.3 7.4 .6
Timothy hay 13.2 3.4 16.8 28.4 1.2
Cotton seed meal 8.2 31.3 1.3 10.9 11.9
Wheat bran 11.9 13.6 1.8 43.1 3.2
Buckwheat middlings 13.2 22. [61] 33.4 5.4
[60] Silage is often put up when the corn is more mature, and then the
water content is less than here given.
[61] Included with nitrogen-free extract.
LEAFLET XLV.
THE LIFE HISTORY OF A BEET.[62]
BY MARY ROGERS MILLER.
[62] Home Nature-Study Course, Vol. IV, No. 29, February, 1903.
[Illustration]
Public-domain text, read in full here on John Shaqi.
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