CHAPTER XV. 
MANAGEMENT OF THE LAYING STOCK. 
The primary object in the management of a flock of laying 
hens is the profit which accrues from the sale of eggs for use as 
human food, as distinguished from the production of eggs to be 
used for hatching in the propagation of future layers and breeders. 
JAN. MAR =MAY JULY ~—SEPT.—_—NOV. 
DEC. FEB APR. JUNE AUG. —_OCT. 
PRICE |] fF] YIELD OF 
EETERE : co EGGS 
$100 AF HH TTH F 4000 
95 | 3800 
90 Fy 3600 
85 -H 13400 
80 +3200 
75 |4+-++- - 3000 
70 2800 
65 2600 
60 Y 2400 
55 2200 
50 E 2000 
4S E 1800 
40 KO Vi aT zi 1600 
35 1. TER 1400 
30 EEE Er 1200 
25 | ee a 1000 
20 LA SEEee A 800 
AS WEA HIT] 600 
40 set z fad LK 400 
5 u HH 44] 200 
OF HH] 0 
TEMP 
Fia. 134.—Curves showing the relation between yield (y), temperature (T) and selling 
price (P) of eggs during the year 1911. 
In the former case the idea is to secure a maximum egg yield 
throughout the year, especially during the months when the price 
of eggs is high, owing to a large demand and limited production. 
This usually occurs during the cold months, or during November, 
December, January, and February (Fig. 134). 
The endeavor is to secure a maximum winter egg yield if the 
greatest profit in market eggs is to be realized; while, in the case 
266 
4 
