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New York AGRICULTURAL EXPERIMENT STATION. 213 
lated statements, giving ages and dates of calving of different cows. 
(2) Prices of food used. (3) Amounts, composition and cost of 
food eaten. (4) Amount and cost of milk produced. (5) Com- 
position of milk. (6) Yield of cream and butter. (7) Yield of 
cheese. 
As a basis for comparison, a uniform lactation period was used 
consisting of the first ten months of lactation. The results repre- 
sent work done with twenty-two different animals for one to four 
periods of lactation, aggregating between forty and fifty periods. 
The summary of the work is here presented under the following 
headings: (1) Production of milk, (2) production of cream and 
butter,2* and (3) production of cheese.2> The data will be pre- 
sented largely in tabular form. 
MILK PRODUCTION. 
TABULATED SUMMARY GIVING COMPARISON OF RESULTS SECURED WITH DiIF- 
FERENT BreEEDS OF Dairy CATTLE WITH REFERENCE TO THE PRODUCTION OF 
Mitk. AVERAGE PER Cow For ONE PErRiIop (10 Montus) oF LActaTION. 
American- ; 
Ayr- Guern- | Holstein- | Short- 
Holder- shire. Devon. sey. | Friesian. Jersey. Horn. 
ness. 
Number of cows........... 2 4 3 4 | 4 4 il 
Total number of periods of | 
PA CEAGION A}. 0% aG.sione. one snecdue: « 4 1 4 11 2 
Cost of food: eaten. os. ..... $42 90 {$49 32 ($37 52 |$46 15 | $50 73 |$45 49 |$46 22 
Pounds of milk given...... 5,721 | 6,824 | 3,984 | 5,385 7,918 | 5,045 | 6,055 
Cost of milk in cents per 
POM Cerepee tare tare Bre sco ene cor Oe 0.76 0.74 0.94 0.86 0.65 0.90 0.78 
Cost of milk in cents per 
RUCTAT Urey srs eae we sysinee sus eee 1.63 Less} 2.02 1.85 1.39 1.95 1.68 
Pounds of milk-solids pro- 
eine leneiyy stewie sia, wr -pecenroke 724.1 |869.4 |577.4 /|804.0 936.5 |775.4 |866.2 
Percentage of solids in milk. . 12.66 | 12.74 | 14.50 | 14.93 iba teste se ye OO ayes ielis iS o810) 
Cost of milk-solids in cents 
MEH SOO UNG sents as wba 5.93 5.68 6.50 Boils) 5.42 5.87 5.34 
Money value of milk at 1.28 | 
cents per pound......... $73 22 |$87 24 $51 00 |$68 93 |$101 35 |$64 58 |$72 50 
Money value of milk based 
on milk-solids at 94 cents 
iE/ Pp lenb be Yo cn deme een 67 58 | 81 14 | 53 89 | 75 04 87 41 | 72 37 | 80 85 
Money value of milk based on | 
milk-fat at 264 cents per 
ROUTE y eevee te atkvthe! te toe Lest 56 12 | 64 47 | 48 27 | 75 18 70 07 | 74 30 | 72 03 
Apparent profit (money value : 
of milk less cost of food)... 24 69 | 31 73 | 16 37 | 28 88 36 65 | 24 63 | 34 60 
Calculated value of skim- 
Ticia) | LOUeesa OS tie ae it ae ia or Re 5 619) O60 812005); Tost 20 49 | 13 78 | 18 20 
Market value of skim-milk... 7 81 9 53 6 00 7 90 10 25 6 89 9 10 
Actual profit (apparent profit 
less market value of skim- | 
TELUS) eye cechar ts Se, aor Noo tose ela 16 89 | 22 20 | 10 37 | 20 97 26 40 | 17 74 | 25 50 
| | 
buat. No,..77- 
* Bul. No. 78. 
“Bul. No. 79. 
