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 (a) 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, (&) 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. 



11. 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, ( b ) 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, G pounds corn meal. 



( & ) 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, 

 1913. Kildee, " Care, Feed and Management of the Dairy Herd," Iowa 

 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), r. '94, 

 '05, '08, '09, '11; b. 50, 94, 95; Minnesota, 35, 67, 130, 140; Missouri res. b. 

 7; Mississippi, b. 60, 70; r. '91, '95, '03; Nebraska, b. 44, 76; New Jersey, r. 

 '82, '85, '98, '03, '04, '07; b. 122, 123, 161, 174, 189, 190, 204; New 

 Mexico r. '04; New York (Cornell), b. 13, 22, 36, 49, 183, 268, 323; New 

 York (Geneva), b. 141; North Carolina, b. 77; North Dakota, b. 16; Ohio, c. 

 128; b. 155; Oregon, c. 5; Pennsylvania, b. 41, 52, 73, 80, 114; r. '81, '92, '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, '07; West 

 Virginia, b. 109; Wisconsin, b. 33, 38, 102, 116, 117, 200, 235; r. '84, '90, '05. 



