If I take the supply of turnips, 120 lbs. per day, as requisite for the maintenance only of the cow, the nutritive elements will be:
| Albu- men. | Oil. | Starch and sugar. | |
|---|---|---|---|
| 1.79 | .264 | 7.92 | |
| Reckoning the oil as used for respiration, and computingit in proportion of 5 to 2 as compared with starch = | .66 | ||
| 8.58 | |||
The food supplied to the cow consists of:
| Lbs. | Water. | Dry. | Albu- men. | Oil. | Starch and sugar. | Fibre. | Min- erals. | Phos- phoric acid. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Hay, | 22 | 2 | 1⁄4 | 19.36 | 2.03 | .59 | 8.74 | 6.05 | 1.95 | .30 |
| Stored mangold, | 35 | 28 | .0 | 7. | 1.05 | .. | 4.20 | 1.05 | .70 | .05 |
| 26.36 | 3.08 | .59 | 12.94 | 7.10 | 2.65 | .35 | ||||
| oz. | ||||
|---|---|---|---|---|
| The 13 quarts of milk yielded of butter, | 13.60 | |||
| Deduct for moisture, &c., | 2.28 | |||
| 11.32 | ||||
| Butter in the skimmed milk estimated as | .68 | |||
| 12.00 | oz. | |||
| 12 ounces of pure oil in the butter are 3⁄4 lb.= | .75 | |||
| lb. | ||||
| The oil in the food, | .59 | |||
| The starch and sugar, | 12.94 | |||
| Used for animal respiration, | 8.58 | |||
| 4.36 | ||||
There appears, then, in this supply of food, .59 lbs. oil and 4.36 lbs. starch for the production of .75 in the butter from 13 quarts per day, the cow’s greatest yield. At the time the milk was tested, aftermath hay was substituted for first-crop hay, in equal quantity. This, it will be observed, is decidedly richer in oil. Her produce had lessened to 10 quarts per day; her production of butter was 10.50 oz. per day, or of pure oil about 9 oz.; for the supply of oil the aftermath hay alone would be much more than adequate.
On examining the adequacy of the food for the supply of albumen for the caseine,
| lbs. | |
|---|---|
| I find this to be, | 3.08 |
| I assume that in 120 lbs. of turnips, as required for maintenance, in a normal state, | 1.98 |
| 1.10 |
Which, according to Haidlen’s analysis, will be adequate to the supply of 8.60 quarts per day. The supply of mineral substances is in excess.
The cow, under this treatment, gave,