. Bulletin. Agriculture -- New Hampshire. May, 1932] Economic Study of Poultry Farms 27 This rate of decrease in the laying flock from a maximum point as well as the date of maximum population naturally varied considerably on different farms. In order to study this difference, the number of layers in four individual flocks each week is charted for the year on the percentage basis in Figure 7. The maximum number housed is consid-. —-j = o|G-«"r'SiS'o"S~',s::S-<0-S5'r,^2?S'VJ'7'£!3'v'm£2S'D-SE ' £ 8 i & * £ I I Week Beginning M ^ — (vj eu -WW — — «^ Figure 7—Weekly population of
. Bulletin. Agriculture -- New Hampshire. May, 1932] Economic Study of Poultry Farms 27 This rate of decrease in the laying flock from a maximum point as well as the date of maximum population naturally varied considerably on different farms. In order to study this difference, the number of layers in four individual flocks each week is charted for the year on the percentage basis in Figure 7. The maximum number housed is consid-. —-j = o|G-«"r'SiS'o"S~',s::S-<0-S5'r,^2?S'VJ'7'£!3'v'm£2S'D-SE ' £ 8 i & * £ I I Week Beginning M ^ — (vj eu -WW — — «^ Figure 7—Weekly population of laying flock for four farms, two of which maintained their flock at nearly full capacity and two of which culled heavily. ered 100% in each case. These four flocks illustrate entirely different practices in respect to culling. Flocks Nos. 8 and 4 show only a very gradual decline in number of birds from the peak about October 1. Ap- parently very little culling is done on these farms during the fall, win- ter and spring. In the case of Flock 8, out of the 100 birds housed in October, 86 were still on hand the following September 1. In the case of Flock No. 4, heavy culling did not commence until May 11. These two flocks operated at nearly full capacity, as far as number of birds was concerned, for the greater part of the year. In contrast to these flocks, Farms Nos. 6 and 3 culled heavily. On the last named flock, heavy culling started immediately after the birds were housed in the fall and continued until June, when the flock was replenished by the addition of a new crop of early hatched 1930 pul- lets. Culling was so extremely heavy in this flock that out of each 100 birds of October 20, only a few over 40 remained by the middle of March, only five months later. By June 1, the flock was reduced to only 12% of the maximum number of birds. It is obvious that this last men- tioned poultry plant was run at full capacity for only a very short period. Per Cent of Ho
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Keywords: ., bookauthornewhampshireagriculturalexperimentst, bookcentury1900
