Bulletin 142, Dairying in Florida real fact may be that she will not produce that amount of milk daily for more than a month or six weeks. It is also possible that she will not give milk for more than six months out of the twelve. To know the producing ability of any cow it is neces- sary to keep a record of the milk produced each day during the lactation period. Very few dairymen in Florida appreciate the importance of milk records. A CONVENIENT RECORD SHEET There is a large number of styles of record sheets available for keeping milk and feed records. Most of these are large and cumbersome, especially when adapted for twenty-five or more cows. Figure 18 illustrates a 5 by 8 inch card ruled and printed COW NO. 59 MILK RECORD OCTOBER 1916 POUNDS Date A.M. P.M. ate A.M. P.M. Date A.M. P.M. Date A.M. P.M. S17.2 13.8 9 16.9 13-0 17 175 13.2 s2 175 13.0 2 17.6 14.0 to 173 12.? 18 17.1 12.7 26 18.1 13.7 3 178 12.-8 178 13.0 19 172 12.9 27 177 14.2 4 172 13.4 12 16.9 13.3 20 18.0 13.6 28 18. 13.8 6 16.8 13.6 13 16.9 13.0 211 76 13.5- 29 18.5 1H. 6 17.4 13. 4 14 .4 12.8 22 19.5 13.8 30 18.1 13.4 7 172 131 is15 -2 14.8 23 18.2 14.1 31 17.8 13. 8 I_-R 13.7 i6 17.3 14.5 24 179 15.7 TOTAL FOR MONTH 990.4 POUNI~ Percent Butterfat 4.7 Value of milk at 30 per Gal.33.15 Pounds Butterfat 14.. Cost of feed " Pound Butter 52.1 Profit 21 Date Served / Served By FIG. 18.-Milk record card in such form as to make it very satisfactory for keeping milk records. With but slight variations, it may be adapted to the keeping of feed records. Such cards have been used at this Station for the last year and have been found more nearly satis- factory than any other record sheet used. HOW MUCH SHOULD A GOOD COW PRODUCE Since quantity plays such an important part in the cost of pro- ducing milk the question may be asked, how much milk must a cow produce to be considered a profitable dairy cow? A certain amount of milk being required to offset the cost of