532 PRINCIPLES OF ANIMAL NUTRITION. 
° ; Equiva- | _ For 
No. of | _ Total Nutriti Live | No. of t Mainte- 
Expert |Nutrients,| “Ratio. (Weight Revolt] wutrients,| ‘nance, 
Horsel....... 4 | 6805.6 | 1:5.79 |) 521] 600, 1890 4416 
Horse II: 
1881-82....]. 7 | 5881.1 | 1:6.64 | 477] 546 | 1720 4111 
1882-83....; 4 | 6748.3 | 1:6.37 | 486 | 662 | 2085 4663 
1883-84....) 6 | 5920.2 | 1:7.26 | 457] 567 | 1786 4134 
Average...| 17 | 6078.4 | 1:6.80 | 473 | 577] 1818 4260 
Horse III: 
1881-82 6 | 5313.8) 1:7.16| 454) 404} 1273 4041 
1882-83....| 6 | 6061.3 | 1:6.88 | 469] 683] 2152 3909 
1883-84....] 5 | 5734.8] 1:7.55 | 473 | 580] 1827 3908 
1885....... 4 | 5761.2) 1:7.57 | 473 | 575) 1811 3.50 
Average...} 21 | 5717.8 | 1:7.29 | 467 | 5(1 | 1766 3952 
By means of a comparison of the results by groups* Wolff 
shows that the maintenance requirement as thus computed is appar- 
ently independent of the amount of work done and of the nutritive 
ratio, and from this uniformity concludes that the relative efficiency 
of the food for work production is unaffected by these factors, 
within the range of his experiments. 
A series of similar experiments on Horse No. III in 1885-86,+ 
computed in substantially the same way, gave results-for the main- 
tenance ration agreeing well with those of earlier years, viz., 
Pernod 30 ote irae eee 3934 grams total nutrients 
Re UD e aos areas baad 3984 “ « i 
MO VW and. Voscocave ve cs 4001 “ *« ae 
NALD Sc wechetateadd au 4 4094 “ e ‘ 
amen C1 8 epee mtrenrereresetee ete eat 4094 “ & a 
Average ............0.. 4021 ‘“ se a 
with an average live weight of 475 kgs., equivalent to 4230 grams 
per 500 kgs. In a succeeding period (IX), however, in which hay 
alone was fed, a decidedly higher result was obtained,. viz., 4357 
grams per head, or 4586 grams per 500 kgs. 
* Loc, cit., pp. 135 and 187. 
t Landw. Jahrb., 16, Supp. III, 32. 
