SUDAN GRASS AND RELATED PLANTS. 45 
The third test, which was designed to ascertain the value of Sudan 
grass hay as a feed for dairy cows, was made at Manhattan, Kans. 
Six cows were separated into two lots of three each, as nearly alike as 
possible in regard to the period of lactation. The ration consisted of 
corn silage, a grain mixture of 4 parts of ground corn, 2 parts of bran, 
and 1 part of oil meal, in addition to chopped Sudan grass hay in 
one case and chopped alfalfa hay in the other. 
In lot 1 the cows were fed alfalfa hay with the above supplemen- 
tary ration for a 15-day preliminary period and a 30-day actual test. 
At the end of this time Sudan grass hay was substituted for the 
alfalfa hay in the ration, and during a 10-day change period and a 
30-day test period they were fed upon Sudan grass hay and the same 
supplementary ration as in the first period. 
In lot 2 the cows were fed upon Sudan grass hay, with the supple- 
mentary ration during the first period and alfalfa hay during the 
second period, under the same conditions as in lot 1. 
The results are given in detail in Table XIV. 
TaBLE XIV.—Comparison of alfalfa and Sudan grass hay for milk production. 
Production. 
i Bod 
Lot. Hay ration. Oni 
Milk. Butter weight. 
(Cow No. 1: Pounds. | Pounds. | Pounds. 
DENS TEM tay UNe fesse) ag: SU pes Dap tae nN aN 597.0 31. 01 884 
SUG ATIVETASS ey eee sey ere 527.4 26. 14 877 
MD) TELE COX Saves Sek SE EL i 69.6 4. 87 7 
MOG Pes Sas a RL oe CER OS Be Cow No. 2: | 
AVIEA ite eee cir Weary gt lr a 633.3 29.76 | 929 
¥ SUGaM Srassupe ms wa se ean eee 597.0 29. O1 921 | 
Differen ees eee a Aes Meee. 36.3 Hi) 8 
Cow No. 3 | 
HAUTE ETT Cas eso cy eae ee Aes Naa a 1, 291.6 55. 91 942 
SDK Feo feg eISSN A es SEE 1,082.6 46. 41 887 
IDifferem COs) AF soaoe Gees aoe ee 209. 0 9.5 55 
Cow No. 4: 
| Sudambonasset ees ee ayaa 603. 2 22. 33 1,032 
PASIAN Pa Nae TRAN ae Uh Rea e es | 576.3 21. 36 1, 024 
Diferences ya sass A See lo es 26.9 97 8 
NGO tree ee st ee ee ee eee oe Cow No. 5: 
Suda erassmeeee se mrnnnc ns wee 663.-5 22.98 1, 203 
AN Talia ee RARER Shoe eRe 530. 2 20. 38 1, 248 
Difference: sass e2 ess MARE 13323) 2.6 —45 
Cow No. 6: 
SUGEIN RAE os doo pb be soaeeeeee 547. 8 21. 44 1, 402 
WAS PNT Be) ah Lathe el Bk AEE 483.5 19. 88 1, 429 
Differences wee ee USS id 64.3 (1.56 —27 
Total (comparison): 
AN Tall Tay ree meee ei um, URE, 4,111.9 178. 30 6, 461 
Wotselyan dy 2 tee ae areas Sikh MPSho ok Sagubsobosoneeee 4,021.5 | 168. 30 6, 319 
DITeren Cv eeNs Take Heer sD: 90. 4 10. 00 142 
