78 k DAIRY FARMING 



LABORATORY EXERCISES 



3. The Parts of a Cow. Go to a dairy barn or otherwise arrange 

 to have a cow to study. Without the textbook let each student 

 point out each of the parts of a dairy cow as shown in Fig. 18. 



4. Make out a Pedigree. If herdbooks of any breed are avail- 

 able, or if they can be borrowed from a breeder in the region, make a 

 pedigree. If advanced registry books are available, fill in the A. R. O. 

 data. If different students take different animals, the pedigrees 

 may be compared to see which animal shows the best breeding. If 

 any farmer in the region has advanced registry animals, pedigrees 

 of these may be worked out, and the same animals may be used for 

 judging, so that comparisons may be made on the basis of both 

 breeding and individuality. 



6. Judging Dairy Cattle. Go to a dairy barn or otherwise arrange 

 to have cows to study. Using a score card like the one on page 77, 

 make comparisons of two or more animals. 



Give the reasons for ranking the animals in the order given. 

 Begin the reasons with the most important difference between the 

 animals compared and give all the leading differences. Make the 

 answers terse and concise. 



6. Weighing Milk. If any farmer in the region desires to cooper- 

 ate with the school, take the class to his farm and get the method of 

 weighing started as directed on page 58. Test the milk, and com- 

 plete the records monthly. Feed records may also be taken by a 

 tnember of the class weekly or monthly. A still better exercise for 

 students who are living on farms is to have them keep the milk rec- 

 ords. 



COLLATERAL READING 



Cyclopedia of American Agriculture, L. H. Bailey, Vol. Ill, pp. 

 26-43, 51, 303-306, 308. 



The Dairy Herd, Its Foundation and Management, U. S. Dept. 

 Agr., Farmers' Bulletin 55. 



Dairy Cattle and Milk Production, C. H. Eckles, pp. 17-26 ; 116- 

 174. 



