PER DAY AND PER 1,000 LBS. LIVE WEIGHT. -------------------------------------------------------------------------------------- Nutritive digestible sub. ------------------------- ANIMALS. Total Albumi- Carbo- Total Nutritive organic dry noids. hydrates. Fat. nutritive ratio. substance. sub. -------------------------------------------------------------------------------------- lbs. lbs. lbs. lbs. lbs. lbs. 1. Oxen at rest in stall 17.5 0.7 8.0 0.15 8.85 1:12 2. Oxen moderately worked 24.0 1.6 11.3 0.30 13.20 1:7.5 3. Oxen heavily worked 26.0 2.4 13.2 0.50 16.10 1:6.0 4. Oxen fattening, 1st period 27.0 2.5 15.0 0.50 18.00 1:6.5 Oxen fattening, 2d period 26.0 3.0 14.8 0.70 18.50 1:5.5 Oxen fattening, 3d period 25.0 2.7 14.8 0.60 18.10 1:6.0 5. Cows in milk 24.0 2.5 12.5 0.40 15.40 1:5.4 -------------------------------------------------------------------------------------- GROWING CATTLE--PER DAY AND PER HEAD. -------------------------------------------------------------------------------------- Age. Average live weight Months. per head. 2 to 3 150 pounds 3.3 0.6 2.1 0.30 3.00 1:4.7 3 to 6 300 pounds 7.0 1.0 4.1 0.30 5.40 1:5.0 6 to 12 500 pounds 12.0 1.3 6.8 0.30 8.40 1:6.0 12 to 18 700 pounds 16.8 1.4 9.1 0.28 10.78 1:7.0 18 to 24 850 pounds 20.4 1.4 19.3 0.26 11.96 1:8.0 SAMPLE RATIONS. Dr. Wolf gives an illustration of the standard for a milch cow, by saying that 30 lbs. of young clover hay will keep a cow in good milk; and that this contains of dry organic substance, 23 lbs., of which is digestible--albuminoids 3.21, carbohydrates 11.28, and fat 0.63. This is .71 lb. albuminoids more, and .22 lb. of carbohydrates less, with .13 lb. of fat more, than the standard. Then he takes the richest and best meadow hay, of which 30 lbs. contains of organic substance 23.2 lbs., having digestible--albuminoids 2.49 lbs., carbohydrates 12.75 lbs., and fat 42 lb. This is almost exactly the feeding standard. As will have been seen by what has preceded, the German standard ration for a milch cow is 24 lbs. of dry organic substance, containing 2.50 lbs. nitrogenous food, and 12.90 lbs. of carbonaceous food. To secure this, Dr. Wolff recommends for every 1,000 lbs. of live weight: