EFFECTS OF DIFFERENT SYSTEMS OF GRAZING. 



13 



well and all other pastures. The cattle in this pasture are there- 

 fore more often disturbed than those in any other pasture, while 

 those in the 70-acre pasture are the least annoyed. 



The gains of the cattle in the 50-acre pasture show that they did 

 not have enough feed to carry them through September with full 

 gains. In the 30-acre pasture the cattle did not have sufficient feed 

 to carry them through July with normal gains. 



Fig. G. — A close view of the rack on the platform of the scales. The gates are operated 

 from the outside by means of ropes and pulleys. 



Table 2. — Average monthly and seasonal gains of 2-year-old steers, showing the 

 increased weight obtained in the pastures continuously grazed for six years, 

 1916 to 1921. inclusive, and in the rotation pasture for four years, 1918 to 

 1921, inclusive. 1 



Average total gains or losses 1 (pounds). 



Monthly. 



Seasonal. 3 



Pasture. 



Average 

 number. 



• Sep- Per 



May. June. July. £££ tern- Octo- pas- 



ber. ber. ture. 



gust. 



Per 100 ; 



Per 



Steers 



Per Per pounds . J[, per Days 

 head. acre. live A.^nJ pas- grazed. 



weight. 



daily. 



100 acres * 347 1,084 628 



70 acres *432 1,158 601 



50 acres *388 1,165 593 



30 acres "362 1,088 438 



Rotation, 70 



acres '843 1,364 710 



540 

 573 



568 

 210 *- 



403 47 

 4;* -24 

 138 -217 



-133 6-285 



2, 575 

 2,942 

 2,441 

 1,803 



287.5 

 294.2 

 244.1 

 180.3 



'12 314 -41 3,450 267 



28.6 

 42.D 

 48.8 

 60.1 



49.7 



38.3 

 39.1 

 32.8 

 24.0 



1.92 

 1.96 

 1.65 



1.63 



35.7 1. 



150 

 150 

 148 

 111 



149 



1 Part yearlings were used in 1916 and 1918. The gains in the table have been reduced to a 2-year-old 

 basis, differing but slightlv from those obtained. When yearlings were used the number of cattle were 

 increased to bring the total initial weight up to about 7,500 pounds. 



* A minus (— ) sign represents a loss. 



1 This average does not equal the sum of the monthly averages because of the nonuniformity of the grazing 

 periods. 



4 Average for three seasons in which the cattle were started on the pastures in May. 



' Average for parts of month during three seasons. 



for one season in which the cattle finished the season on the pasture. 



7 Average for two seasons that the cattle were started on the pasture in May. 



