352 QUEENSLAND AGRICULTURAL JounNaL. [1 Maz, 1000 
Dairying. 
MANGELS V. SUGAR BEETS FOR MILK PRODUCTION. | 
CuEMicar analyses show that sugar beets contain a lower percentage of walet 
and a higher percentage of nutritive material than mangels. ‘The f 
difference in nutritive material, however, is in connection with the fat and heey 
producing substances, sugar beets containing more of such substances 
mangels. In order to test the comparative value of these two kinds of Be i 
for milk production, two experiments, each with different cows, have at it: 
completed, and the results of the two experiments correspond so closely ee |! 
they are of interest. 
In each experiment four cows were used. They were selected from Bh 
herd in the dairy department, care being taken to select cows as nearly © | 
possible in the same stage of lactation. After a week’s preparatory feeding | ‘a 
during which all the cows were fed the same ration, the rations were chang | 
Two of the cows were fed 60 Ib. of sugar beets per cow per day for | 
weeks; then they were fed 60 Ib. of mangels per cow per day 10 A | 
weeks. ‘The other two cows were fed 60 Ib. of mangels per cow per. | 
during the first two weeks, and then changed to 60 lb. of sugar beets te | 
cow per day during the next two weeks: Thus each experiment lasted 10 il 
weeks, and each cow was fed two weeks on mangels and two weeks oD su, ot 
beets. In addition to the roots, the cows received a meal ration and whatelor 7 
hay they would eat, each cow receiving like quantities of hay and meal. In 
first experiment, the meal ration consisted of equal parts by weight of PS 
barley, and oats, and each cow was fed 7 lb. of this mixture per day. isl 
the second experiment, each cow was fed 6 lb. of bran and 2 Ib. of pea 1 
per day. 
It might have been a better test of the relative nutritive value of the 
foods, had no meal been fed; but the object of these experiments was tO elf a. 
the influence of these foods upon the milk flow when fed as they most Ne | 
would be in ordinary practice—namely, in conjunction with a meal ration. tical 
seems to be the main practical point at issue, and the question in which pracy” 
men are most interested. q 
The following condensed table shows the amount of milk produced by ae | 
cow on sugar beets and on mangels in each experiment :— 
ge two | 
test | 
hal Mew litproducedion Milk produced 
Sugar Beets. Mangels. 
—_ — —-— ! — — *) 
| 
First Experiment. Lb. Lb. 
GowNnl phe Srmehae NE ERT) isan cee, hank 306°75 277-50 
Bape2o eng ean ar ee an 393°75 406°79 
Dee apa ar hee my fee iiod 262°00 27250 
2”? 4 ot aed on rhs! abe “te. nn 305°50 neiN 315 a 
(Do tal Get sage) eet BAe Bes Oa) tie ae 1,268°00 1,275°50 
Second Experiment. 
CowiNo te POY Ad Satis Be TED 319-00 330700 
OE OE Smeg ON ay A oe ca aE 318-75 326°50 
BRS Bictgy cSt ye RR ORR Ralet real 273-25 260°29 
rer ila el ace Meh setae oot meh ned de 319°25 510 Eg 
Total 1,230'25 : 
