| I. | II. | III. | IV. | V. | ||||
|---|---|---|---|---|---|---|---|---|
| Water, | 6.82 | 11.19 | 9.23 | 16.94 | ||||
| Oil, | 16.47 | - | 9.08 | 12.96 | - | |||
| Albuminous bodies, | 44.41 | 48.82 | 25.16 | 28.28 | 10.69 | |||
| Mucilaginous and Saccharine matters, | 12.74 | - | 48.93 | 34.22 | 40.11 | |||
| Fibre, | 11.76 | 9.00 | 27.16 | |||||
| Ash, | 7.80 | 8.96 | 5.64 | 6.21 | 5.04 | |||
| 100.00 | 100.00 | 100.00 | 100.00 | |||||
| Nitrogen, | 7.05 | 7.75 | 3.95 | 4.47 | - | |||
| Phosphoric acid in ash, | 2.36 | 2.45 | - | - | - | |||
| Sand, | .94 | - | 1.32 | - | - | |||
Johnson also remarks, in this connection, that the great value of linseed-cake, as an adjunct to hay for fat cattle and milch cows, has long been recognized; and is undeniably traceable in the main to three ingredients of the seeds of the oil-yielding plants. The value of food depends upon the quantity of matters it contains which may be appropriated by the animal which consumes the food. Now, it is proved that the fat of animals is derivable from the starch, gum, and sugar, and more directly and easily from the oil of the food. These four substances are, then, the fat-formers. The muscles, nerves, and tendons of animals, the fibrine of their blood, and the curd of their milk, are almost identical in composition, and strongly similar in many of their properties with matters found in all vegetables, but chiefly in such as form the most concentrated food. These blood (and muscle) formers are characterized by containing about fifteen and a half per cent. of nitrogen; and hence are called nitrogenous substances. They are also often designated as the albuminous bodies.
The bony framework of the animal owes its solidity to phosphate of lime, and this substance must be furnished by the food. A perfect food must supply the animal with these three classes of bodies, and in proper proportions. The addition of a small quantity of a food rich in oil and albuminous substances to the ordinary kinds of feed, which contain a large quantity of vegetable fibre or woody matter, more or less indigestible, but nevertheless indispensable to the herbivorous animals, their digestive organs being adapted to a bulky food, has been found highly advantageous in practice. Neither hay alone nor concentrated food alone gives the best results. A certain combination of the two presents the most advantages.
A Bavarian farmer has recently announced that heifers fed, for three months before calving, with a little linseed-cake, in addition to their other fodder, acquire a larger development of the milk-vessels, and yield more milk afterwards, than similar animals fed as usual. Cotton-seed cake must have an equally good effect.
Some of those who have used cotton-seed cake have found difficulty in inducing cattle to eat it. By giving it at first in small doses, mixed with other palatable food, they soon learn to eat it with relish.
On comparing the analyses II. and I. with the average composition of linseed-cake IV., it will be seen that the cotton-seed cake is much richer in oil and albuminous matters than the linseed-cake. A correspondingly less quantity will therefore be required. Three pounds of this cotton-seed cake are equivalent to four of linseed-cake of average quality.
During the winter season, as already remarked, a frequent change of food is especially necessary, both as contributing to the general health of animals, and as a means of stimulating the digestive organs, and thus increasing the secretion of milk. A mixture used as cut feed, and well moistened, is now especially beneficial, since concentrated food, which would otherwise be given in small quantities, may be united with larger quantities of coarser and less nutritive food, and the complete assimilation of the whole be better secured. On this subject Dr. Voelcker truly observes that the most nutritious kinds of food produce little or no effect when they are not digested by the stomach, or if the digested food is not absorbed by the lymphatic vessels, and not assimilated by the various parts of the body. Now, the normal functions of the digestive organs not only depend on the composition of the food, but also on its volume. The volume or bulk of the food contributes to the healthy activity of the digestive organs, by exercising a stimulating effect on the nerves which govern them. Thus the whole organization of ruminating animals necessitates the supply of bulky food, to keep the animal in good condition.
Feed sweet and nutritious food, therefore, regularly, frequently, and in small quantities, and change it often, and the best results may be confidently expected. If the cows are not in milk, but are to come in in the spring, the difference in feeding should be rather in the quantity than the quality, if the highest yield is to be expected from them the coming season.
The most common feeding is hay alone, and oftentimes very poor hay, at that. The main point is to keep the animal in a healthy and thriving condition, and not to suffer her to fail in flesh; and with this object some change and variety of food is highly important. And here it may be remarked that cows in calf should not, as a general rule, be milked the last month or six weeks before calving, and many prefer to have them run dry as many as eight or ten weeks. The yield of milk is better the coming season, and holds out better, than if they are milked up to the time of calving.
There are exceptions, however, and it is often very difficult to dry off a cow sufficiently to make it judicious to cease milking much, if any, before the time of calving. Some even prefer to milk quite up to this time; but the weight of authority among the best practical farmers is so decidedly against it, that there can be no question of its bad economy. Towards the close of winter, a herd of cows will begin to come in, or approach their time of calving. Care should then be taken not to feed too rich or stimulating food for the last week or two before this event, as it is often attended with ill consequences. A plenty of hay, a few potatoes or shorts, and pure water, will be sufficient.