252 PRODUCTIVE FEEDING OF FARM ANIMALS 
4. Name the six most important dairy breeds in this country. 
5. State the relative rank of these breeds as regards (@) yield of milk, (6) 
yield of butter fat, (c) per cent of fat, (d) feed cost per pound of 
butter fat, according to experiment station trials. 
6. What is the normal decrease in the production of milk and butter fat 
for good dairy cows due to the advance ‘of the lactation period? 
7. How does the feed influence (a) the quality, (6) the yield of milk? 
8. What method would you follow for the improvement of the production 
of the dairy herd? 
9. Give the approximate amounts of dry roughage, succulent feeds, pasture, 
concentrates eaten by a good dairy cow in the northern States during 
the year. 
10. State how the Wolff-Lehmann standards for milch cows have been modi- . 
fied by Haecker, 
1l. Give the modified figures for the Armsby standard for milch cows as 
suggested by Eckles. 
12. Describe briefly the system of feeding the dairy heifer. 
13. Describe briefly the system of feeding dairy cows in your locality (a) 
during the summer, (0) during the winter months. 
14. Criticise the following rations for dairy cows, and state how they may be 
changed to conform to the standards for dairy cows: 
(a) 20 pounds cornstalks, 10 pounds timothy hay, 6 pounds corn meal. 
(b) 20 pounds mixed hay, 5 pounds oats, 3 pounds corn meal. 
(c) 25 pounds alfalfa hay. 
(d) 40 pounds green alfalfa, 20 pounds alfalfa hay. 
(e) 50 pounds green corn fodder, 3 pounds each of wheat bran, dry 
brewers’ grains, and oil meal. 
(f) 30 pounds corn silage, 10 pounds cornstalks, 4 pounds corn meal, 
and 2 pounds oil meal. 
Literature on Feeding Dairy Cattle—Eckles, “Dairy Cattle and 
Milk Production,” New York, 1914. Shaw, “ Management and Feeding of 
Cattle,” New York, 1914. Murray, “The Chemistry of Cattle Feeding and 
Dairying,’ London, 1914. Housman, “Cattle, Breeds and Management,” 
London, 1905 (see also p. 226). Alvord, “ The Dairy Herd,’ Farmers’ Bulle- 
tin 55, 1904. Haecker, ** Feeding Dairy Cows,” Minnesota Bulletin 130, May, 
1918. Kildee, ‘Care, Feed and Management of the Dairy Herd,” lowa 
Circular 16, March, 1914. 
Experiment Station Bulletins (b), Circulars (c), and Reports (r).— 
Alabama, b. 123, 174; Colorado, b. 73; Connecticut (Storrs), r. ’04; 
Florida, b. 102; Georgia, b. 49; Iowa, c. 16; Kansas, b. 93, 125; r. ’88; 
Maine, r. °95, 09; Maryland, b. 84, 98; Massachusetts (Hatch), +. 794, 
705, °08, 709, °11; b. 50, 94, 95; Minnesota, 35, 67, 130, 140; Missouri res. b. 
73 Mississippi, b. 60, 70; r 91, 95, 703; Nebraska, b. 44, 76; New Jersey, r. 
82, 85, 798, 703, 04, 407; b. 122, 123, 161, 174, 189, 190, 204; New 
Mexico Yr. 04; New York (Cornell), b. 13, 29. 36, 49, 183, 268, 323; New 
York (Geneva), b. 141; North Carolina, b. 77; North Dakota, b. 16; Ohio, G. 
128; b. 155; Oregon, c. 5; Pennsylvania, b. 41, 52, 73, 80, 114; r. ’81, 792, ’95; 
Rhode Island, b. 77; South Carolina, b. 66, 117; South Dakota, b. 81; 
Tennessee, b. 80; vol. 17, No. 4; 15, No. 4; Texas, b. 47; Utah, b. 68; 
Virginia, b. 148, 156; Vermont, b. 164; r. 92, ’95, ’01, ’03, 04, 06, 707; West 
Virginia, b. 109; Wisconsin, b. 33, 38, 102, 116, 117, 200, 235; r. ’84, 790, ’05. 
ry 
