60 



BULLETIX 1031, 1^. g^ DEPARTMEXT OF AGEICTLTURE. 



consisted mainly of native stock from 2 to 12 j^ears of age. The 

 special herd, was much the same in so far as age limits were con- 

 cerned, but the cows were more nearly uniform grade Herefords. 

 The 42 cows in the small herd were from 4 to 12 years of age, and 

 were about the same as the special herd in grade. The drought in 

 1916 to 1918 interfered somewhat with the control of the separate 

 herds, especially the herd of 42 head for which only one year's record 

 is available. The results of calf crop obtained in the various herds 

 on the Jornada Range Reserve and comparison with the estimated 

 calf crop for outside range with average for the four-year period are 

 shown in Table 22. 



Table 22.- 



-Xumber of calves per hundred cores on open smitheni Neic Mexico 

 range ayid on the Jornada Range Reserve. 





Outside 

 range. 



Jornada Range Reserve. 



Year. 



1,500- 

 head 

 herd. 



.500-head 

 special 

 herd. 



42-head 

 herd. 



Average. 



1916 



55 



35 



. 25 



35 



69.2 

 52.7 

 50.8 

 41.4 



81.0 

 68.2 

 80.0 

 52.0 





72.0 



1917 .... 





64.1 



1918 



97.6 



58.8 



1919 



43.7 









Average . 



37.5 .^.^. 2 1 70.3 





59.6 















The larger calf crops of the Jornada reserve, as shown in the table, 

 are the results of the methods of handling the stock in practice. 

 These involve condition of the cows and bulls, number and distribu- 

 tion of bulls among the cows, and the segregation of nonbreeding 

 stock from the breeding herd. 



Condition of coics. — To insure the cows in the special herd being in 

 thrifty condition for breeding and calving, grama-grass range was 

 reserved for use by the herd during the winter and spring and 

 supplemental feed was provided, as is shown in Table 23. In addi- 

 tion, the calves were weaned early, which gave the cows the advan- 

 tage of being dry several months before the next calving time. 



Table 23. — Cottonseed cake fed and cost of feeding to cows in oOO-hcad herd. 



July 1 to June 30— 



Number 



of cows 



fed. 



Percent- 

 age of 

 total 



breeding 

 cows. 



Amount 

 cotton- 

 seed 

 cake. 



Total 



cost, 



feed and 



feeding. 



Cost per 

 head. 



Cost per 



head for 



entire 



herd. 



Period of 

 feeding. 



1915-16 



1371 



220 

 500 



52 



44 

 100 



Pounds. 

 25, 650 



22,585 

 64,500 



$534.00 



649.32 

 1, 935. 00 



SL44 



2.95 

 3.87 



SI. 07 



1.60 

 3.87 



/Feb. 1 to Apr. 26 

 VTune6toJulvl9 

 Dec. 9 to Sept. 7 



1916-17 



1917-18 



1918-19 2. . 



Feb. 1 to June 15 











; \"" 1 



1 Includes 20 bulls. 



2 No feeding. 



