288 



period in addition to the 3 i)ouuds of corn meal and 3 pounds of wlieat 

 bran, which were fed at all times, were as follows: 



Period 1, 3 pounds cotton-seed meal and rowen hay ad lihitum. 



Period 2, 3 pounds gluten meal and rowen hay ad lihilinn. 



Period 3, 3 pounds linseed meal and rowen hay ad libitum. 



Period 4, 3 pounds cotton-seed meal, 5 pounds rowen hay. and mixed silage rt/f/i/nVum. 



Period 5, 3 pounds gluten meal, o pounds rowen hay. and mixe<l silage ad libilum. 



Period 6, 3 pounds gluten nu^al and corn stover ad lihilinn. 



Period 7, 3 pounds cotton-seed meal and corn stover ad libitum. 



Period 8, 3 pounds cotton-seed meal and rowen hay ad libitum. 



Period 9, 3 j)ounds gluten meal and rowen hay ad libitum. 



In all nine grade cows in different stages of the milking period wore 

 used in the experiment, but at no time were there more than six cows 

 included in the test, some of the cows being replaced by others when 

 their milk yield became too small. The cxi)eriment lasted from Novem- 

 ber, 1890, to June, 1801. During this time the gluten nu^al ranged 

 in price from $24.50 to $28, the linseed meal from $2() to $27, and the 

 cotton-seed meal from $26 to $28 per ton. The tabulated record for 

 each cow includes the hist(»ry of the cows; the analyses of the corn 

 meal, wheat bran, cotton seed meal, old-process linseed meal, gluten 

 meal, rowen hay, corn and soja bean silage, and corn stover, with r« i 

 ercnce to both food an<l fertilizing ingredients; the amount of eacli 

 food consMiiied; the nutritive ratio of ciicli ration; yield and composi- 

 tion of the milk: an<l the live weight gained during the feeding periods. 



[With rt'gard 1o the yield of milk,] almost without an «'Xceptioii changes iu the 

 coarse fodder allVcted then-suits more seriously tlian <h;ingi's in the grain. • » » 

 Mixed silage with row<-n in ]»lace of corn stover in some inst.mees raised tlie daily 

 yield (dinilk more than 3 quarts; allowing 3 cents per ([uart of milk, makes the 

 former (mixed silage .and rowen) the cheaper coarse fodder article of the two. These 

 results are noticeahle without referenee to the iiartimho- euniKination of grain tised 

 in either case. 



The conclusions of the autlior are that (I) at the i>revailiiig market 

 prices there was no marked ditierence in the etfects of the cotton seed 

 meal, gluten meal, and old-process linseed nu'al on the gross cost (d the 

 rations. Making the usual allowances f(»r the value of the manure, the 

 "3 pounds of cott(Hi-seed meal are 0.'.>4 cent eln-aper than 3 pounds of 

 gluten meal, and 0.22 cent cheaper than 3 pounds of ohl i»rocess linseed 

 meal. " (2) With regard to the milk yield, where the coar.M' foddi'r cou- 

 sist^'d of rowen hay ahuie "cottonseed meal h'ads in live out of six 

 cases," an<l where silage and hay or corn stover were fed "the gluten 

 meal competes well with cott<m-seed meal. " (3) " The density of Ihc 

 milk in case of the same cow varied but little during the ex]>eriment ; tiie 

 notable changes were a]>i)aiently in a controlling degi,.,. dn^ to the par- 

 ticular condition and individuality of the cow used in the trial." 



The superior feeding effect of green soja heans as a coarse fodder constituent in the 

 diet of milch cows, has heen shown in our sumnu-r feeding ex]ierinients of ISJX). re]>orted 

 iu the Annual Report of the station for 1890, pp. 39-54 [see Kxperiuiont Station Kecord, 



