No, 33. ] | 109 
Analysis of Foods Fed. 
é Poh ie Nitrogen — 
Water. Ash. aul Fibre. nally, ‘) Fat. 
Veo aE 13.88} 4.88] 5.88] 33.33 40.32} 2.21 
Shorts (January 2-10).| 14.24) 5.69) 15.33) 7.53) 54.26) 2.95 
Shorts (January 11 to 




February) 9).......0). 14.13} 5.26) 14.64) -7.87) 55.25) 2.85 
Shorts (February 10-18); 14.28) 5.08) 14.89) 7.50) 55.62) 2.638 
Corn meal] (January 2 to 
LORE) oa a nna VO HOS cordate, | Gra Oeh 50} 65.35). 4.34 
Corn meal (February 
Se Bare erp wis Ole: Bier iale nj 8 18.44) 1.20) 8.82 ol 66.61} 4.42 
Gluten meal...... evel, Liana vend 74) 28.03 ce) 54.46} 8.73 
Ensilage......... ete TorOL ee so0t et bsGOp se ZeLOr 47.10.22 st 




Our first discussion must be upon the weight of the cows. As 
Period I and Period VII are duplicates, we can use them for com- 
parison. We note that although the same materials were fed, yet the 
amount consumed varies, and that the totals of weights of cows and 
products differ. This difference is important as indicating the limits 
within which our figures can be used. Thus, taking the last three 
days of each period, we find that the cows gained upon the assumed 
normal weight twenty-six pounds during Period I, and lost eighty-two 
pounds during Period VII. ‘This variation of one hundred and eight 
pounds must arise from the imperfection of the method of calculating 
gain or loss from the daily live weight of the animals, or from effect 
of previous feeding. During Period I, comparing the weights of the 
first and last three days, the gain of the last three over the first three 
is twenty-nine pounds; during Period VII, the loss in the last three 
over the first three days is twenty-nine pounds. 
The changes of weight which occurred from the assumed normal 
weight of two thousand eight hundred and twelve pounds is expressed 
below in + and — signs. 
For three last For average 
PERIOD. days. of period. 
MEO Lela es ary aidan dan. 1.26 Ibs. 16 lbs 
PERM HOE Noi eK aear baat LLG Hau Xuan S 1 ies 
MPA RI AAU IES Tafa ca ne aa J oe a +36 
MOR Bia isle 0d Le dalioslob oka oh ae LO. as SED tan ies 
OS pace EAS Rg a She Mec Se Euler OO 9% —68 *< 
a Since By esaertend Sh IP Sag +8 « — R27 * 
es hg be. a ele + od e-siesin 8 aes —82 “ —63 * 
We may supplement the above by a table representing the variation 
of each cow during each period of three days, from the average weight 
of the period, thus obtaining an expression for the influence of the 
food used. 
