BUREAU OF ANIMAL INDUSTRY. Ill 



the Army. The stallion Scotland 6000 was sold to that department 

 for the same purpose. Seven Morgan stallions bred in this project, 

 including those named, are now standing for public service under 

 the supervision of the War Department. The stallion Navarre 7238 

 and the mare Nadri 04056 were sold to the University of Porto Rico. 



The stallion Troubadour 6459 has proved to be a very satisfactory 

 sire, and since being used as the premier sire in this stud has sired 

 colts of uniform size and quality. The average size and weight 

 consistent with desirable Morgan type is being gradually increased. 

 The stallion Bennington 5693 is being used rather extensively. 

 There has been pronounced improvement in the stud at the Morgan 

 Horse Farm during the past few years. The gradual development 

 of the breeding operations at this farm is now becoming apparent 

 and is reflected in the great demand for breeding stock bred by the 

 department. 



An interesting discovery has been made in the exhumation of a 

 number of Morgan horses and finding that a majority had only 23 

 vertebrse instead of the customary 24 usually found in other breeds of 

 horses except the Arab. This helps to substantiate the theory of 

 the Arabian ancestry of the Morgan. 



FARM POWER STUDIES. 



The bureau has cooperated with the Bureau of Public Roads and 

 the Bureau of Markets and Crop Estimates in continuing the eco- 

 nomic studies of the cost and utilization of power on farms in certain 

 areas and the effect of the introduction of the tractor on farm-power 

 requirements. The first study was made in the Corn Belt in a survey 

 of 286 farms. During the last year the study was made in the 

 Wheat Belt and consisted of a survey of 354 farms in that section. 

 The results of these surveys, embodied in department publications, 

 have brought out some interesting data concerning farm-power re- 

 quirements. Studies relating to the efficiency of horses are being 

 conducted at the experiment farm at Beltsville, Md., in cooperation 

 with the Bureau of Public Roads. 



CERTIFICATION OF ANIMALS IMPORTED FOR BREEDING PURPOSES. 



Under the provisions of paragraph 397 of the tariff act of October 

 3, 1913, the bureau issued certificates of pure breeding for 967 foxes, 

 848 cattle, 5.91 dogs, 151 horses, 62 sheep, and 20 cats. 



POULTRY INVESTIGATIONS. 



POULTBY FEEDING. 



Thirty pens of fowls were used in feeding experiments, nine of 

 which were yearling hens and the remainder pullets. Some of these 

 pullet pens are on tests similar to those previously conducted, and 

 others are on new tests with varying amounts and kinds of animal 

 and vegetable proteins. 



The new mash for the general-purpose breeds, such as the Ply- 

 mouth Rock and the Wyandotte, containing only about 15 per cent 

 of meat scrap and 33 per cent of ground oats and bran, continues 

 to give good results in the second year in the two pens in which it is 

 being used. The more stimulating, concentrated ration continues to 



