434 ANNUAL REPORTS OF DEPARTMENT OF AGRK'ULTURE. 



The work on upbreeding the various classes of live stock was 

 continued as far as possible. The former practice of keeping native 

 brood mares at the station for breeding had to be abandoned owing 

 to a lack of labor and pastures. A lack of funds making it impos- 

 sible to purchase concentrates, the horse-feeding experiments to 

 determine the suitability of copra-meal cake as a part of the ration 

 for horses have been suspended. The station's efforts to upbreed 

 the local native cattle were continued. Two of the better grade 

 bulls were placed in outlying portions of the island for breeding 

 }Mirposes. The station's purebied sires, which were imported in 

 1920, continued to make good development and 18 privately owned 

 cows were bred to them during the year. Eight grade bulls were 

 disposed of to the public for breeding purposes. Some progress is 

 reported in arousing an interest for the control of cattle ticks. An 

 experiment in the use of supplements for pasture and green feeds 

 was begun, using as far as possible grains and other feeds of local 

 production. The results showed decided gains in weight of animals 

 and in milk 2)roduction where small amounts of concentrates were 

 fed. 



The improvement work with swine is progressing satisfactorily. 

 A feeding experiment with mature hogs showed that a ration of two 

 parts cooked breadfruit, oiLe part damaged rice, and one part copra 

 meal, supplemented by a daily feed of 3 or 4 ounces of tank- 

 age, formed a very satisfactory ration for mature animals. The 

 practicability of this ration for growing pigs is now under test. 

 The work with poultry consisted in maintaining a purebred flock 

 of Ehode Island Reds and in the development of a new variety which 

 is the result of crossing a -strain of native white hens and Ehode 

 Island Red cockerels. In the second generation some very good 

 white feathered fowls have been obtained, and there has been no 

 decrease in size or vigor over the first generation. Among the crosses 

 of both the first and second generations a number of individuals have 

 been secured that show considerable improvement over those raised 

 during the first year of the experiment. The hardiness of the native 

 fowls is maintained in this new strain. Among the purebred flock 

 considerable improvement in egg laying is noted. For the proper 

 continuation of this experiment the station is in need of additional 

 equipment and new houses and runs. 



The station is the only agency in Guam for the distribution of 

 breeding stock, and the demand for improved animals continues to 

 be greatly in excess of the supply that can be furnished with the 

 present facilities. 



On account of its close relationship with live-stock improvement, 

 considerable attention continues to be given to the growing of forage 

 plants. Comparative yields of green forage were obtained for three 

 cuttings of various forage grasses. The average yields per cutting 

 were: Napier grass, 56.67 tons; Guatemala grass, 35.5 tons; Pennise- 

 tum setosmn, 14.55 tons; (iuinea grass, 13.5 tons; Sudan grass, 5.92 

 tons ; and Japanese cane, 67.2 tons per acre. Tests were made of the 

 relative palatability, 10 cattle and 3 horses being used, the animals 

 being given free choice of the forage. The different grasses rank in 

 apparent palatability as follows : Para grass, Guatemala grass, Jap- 

 anese cane, and Napier grass. Where the amount of grass consumed 



