422 THIRTIKTII AnNL-.\I, RlCl'ORT 



number of cattle and sheep finished for market. Farmers on irri- 

 gated land are increasing the number of pure-bred Hereford cattle 

 and registered sheep, as they find a good demand for breeding males 

 from range stockmen. Dry-farmers have continued to use livestock 

 as a means for marketing their crops. There is a tendency for dry- 

 farmers to cooperate more with range cattlemen in feeding cattle 

 for market and in carrying range cows over periods of drouth. 



INVESTIGATIONS 

 Four different lines of investigation have been pursued in the 

 Department of Animal Husbandry during the past year. They 

 were: 



1. Lambing ewes on feed. 



2. Feeding range cows. 



3. Hog feeding tests. 



4. Range livestock production. 



LAMBING EWES ON FEED. 



Each winter close to a million sheep are brought from ranges 

 in northern Arizona to winter on the desert ranges in the central 

 part of the State. During seasons of abundant rainfall the sheep 

 do well on the desert. At times, however, feed and water are not 

 available on the desert and it is necessary to feed the sheep or else 

 move them to irrigated valleys to be fed. During the winter of 

 1917-18 approximately 400,000 ewes were fed on irrigated farms. 

 Little was known regarding the best method of feeding sheep and 

 losses were excessive. 



In order to secure some information regarding the best feeds 

 for lambing ewes on irrigated farms, an experiment was conducted 

 during the winter of 1918-19. Two hundred range-bred ewes were 

 selected and placed in dry feed lots on the Mesa Experiment Farm. 

 They were divided into ten different groups of twenty in a lot and 

 fed as follows: 



Silage. 



Silage ad libitum, one-fourth pound cottonseed meal. 



Silage ad libitum, one-half pound cottonseed meal. 



Silage, six pounds ; one and one-half pounds alfalfa hay. 



Silage, four pounds ; two pounds alfalfa hay. 



Silage, four pounds; two pounds pea hay. 



Alfalfa hay, three pounds ; whole barley one-half pound. 



Alfalfa hay, one and three-fourths pounds ; pea hay, one 



and three-fourths pounds. 



Pea hay, three and one-half pounds. 



Alfalfa hay, three and one-half pounds. 



