670 



EXPERIMENT STATION RECORD. 



0.85 kg. digestible crude protein (equal to 0.78 true protein) and 0.G4 kg. 

 nitrogen-free material. Of these quantities a small amount of protein 

 (13 gm.) and of nitrogen-free material (equal to 10G gm. fat) was 

 required for the building and repair of hair, of hoof, skin, etc. 



Following methods outlined in the earlier investigations, the income 

 and outgo of energy in the 3 experiments was calculated. 



Income and outgo of energy. 



Income. 



< Mlt go. 



Experiment 1: Calorie*. 



Meadow hay (7,303 gm.) 32, 252. 2 



Feces (4,668.2 gm. ) 



Nitrogen evolved in drying feces 



Urine . 



Methan (156.8 cm.) 



Protein tissue lost (84.."> ij.ni.). 

 Fat tissue lost (391.2 gm.) 



Total outgo 



Balanc 



Experiment 2: 



Meadow hav (5,107 cm.) 



live bran (2,621 gm.) 



Feces (2,641 gm.) 



Nitrogen evolved in drying feces 

 Urine 



Methan (165.4 gm) 



Protein tissue lost from body (17.2 gm.) 

 Fat tissue lost (23.7 gm.) 



Total outgo . 

 Balance 



Experiment 3: 



Meadow hav (5,179 gm.) 



Beet chips (43.28 gm.) 



Kye bran (866 gm.) 



Feces (3,278 gm.).. 



Nitrogen evolved in drying feces 



Urine 



Metban (267.09 gm.) 



Protein tissue gained (30.9 gm.). . 

 Fat tissue gained (118.8 gm.) 



Total outsro 



Calories. 



"" 14," 653*5 



15.5 



1, 789. 9 



2,077.0 



374. 5 

 3,716.4 



17 807.2 



22. 951. 5 

 12,158 3 



76.2 



225. 1 



18, 654. 5 



22, 787. 6 



17, 855. 2 



4, 03:;. 5 



24, 557. 7 



18, 535. 9 



12,331.1 



14.7 



1, 918. 6 



2, 190. 9 



16. 455. 3 



14. 733. 6 

 27.4 



1, 820. 9 

 3, 536. 7 



317. 5 



2, 052. 



20,118.6 



As shown by the 3 experiments the average energy required of a 

 steer per 1,000 kg. live weight is 24,979 calories, when the tempera- 

 ture of the surrounding air is 15.7° 0. The deduction is drawn from 

 the experiments that feeding is less profitable the longer the feeding 

 period is prolonged. The authors discuss the energy of the feces, urine, 

 and methane excreted, and deducting these factors from the energy of 

 the food, calculate its physiological nutritive effect. The physiological 

 nutritive effect per gram of meadow hay in the first experiment was 

 calculated to be 3.435 calories; of 1 gm. of meadow hay and rye bran 

 in experiment 2, 3.722, and of 1 gm. of meadow hay, beet chips, aud 

 rye bran in experiment 3, 3.593 calories. The physiological nutritive 

 effect of 1 gm. of digestible rye bran is calculated to be 4.102 calories. 

 The experimental data are reported in full in tabular form. 



