CATTLE. 225 



PROBLEMS. 



1. The owners of 464 herds numbering 6,202 cows were readers of 

 dairy papers; these dairymen reported the cost of feed to be $34.78 per 

 cow, and that they secured $1.42 for each dollar spent for feed; what 

 was the profit per cow? 



2. The owners of 753 herds, composed of 9,122 cows who did not 

 read dairy literature fed their cows at a cost of $35 per head; they made 

 an average annual profit of $1.85 per cow ; what was the amount received 

 for each dollar spent for feed? 



3. In 652 herds of 9,365 cows of good dairy type, the annual profit 

 (excess of receipts over value of feed) per cow was $17.38; while 685 

 herds, numbering 8,104 cows not of dairy type, returned a profit of $2.03 

 per head. What is the ratio of profit of a good dairy type over a poor 

 or non^-dairy type? 



4. Referring to the table under "Summary," page 224 how many 

 times greater is the profit on the annual amount invested in feed for a 

 dairy cow receiving ensilage, than the profit on the yearly cost of feed for 

 a cow receiving no ensilage? 



5. Referring to the same table, the ratio of profitable to unprofitable 

 herds is how many times as great among herds in good stables as among 

 herds in poor stables? 



NOTE We have learned from the table that the average cow of 639 

 herds well stabled has returned to t'he owner an annual profit of $14.12; 

 while the average cow in 323 herds poorly stabled produced but 23c profit 

 (above cost of feed) ; but it is only fair to infer that the best stabled 

 cows were better cows, better fed, and better cared for by better dairy men. 



6. One of the best single herds examined in Iowa produced 322 

 pounds of butter per cow, with a net profit of $42.92 per cow; the returns 

 for a dollar's worth of feed was $2.48. What was the selling price of 

 butter? 



7. The poorest single herd produced 63 pounds of butter fat per 

 year, at a cost of $28 per cow. Each dollar's worth of feed produced 43c 

 in returns. What was the loss per cow? 



8. What was the difference in favor of the best herd? 



9. Ten herds in Wisconsin, with an average production of 276 

 pounds of butter per cow, selling at 17. 8c a pound, brought $1.98 for each 

 $1.00 invested in feed; but the feed only cost $25.10 per cow per year. 

 What was the profit per cow? 



The difference between some of these herds was very small, 

 and the cost and amount of feed were the material factors in de- 

 termining profit. 



10. Which is the better income from a dairy cow, 56 pounds of milk 

 daily testing 4 per cent or 36 pounds of milk testing 6 per cent? 



15 



