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Division of Animal Industry 



Honolulu, Hawaii, May 1, 1916. 

 Board of Commissioners of Agriculture and Forestry, Honolulu. 



Gentlemen : — I beg to report for the Division of Animal In- 

 dustry for the month of March, as follows : 



ANNUAL REPORT. 



A concise annual report, as by law required, is herewith sub- 

 mitted. It covers, as usual, the work of the various branches 

 of this division, comparing results with those of the preceding 

 years. 



HOG CHOLERA. 



A few cases of hog cholera were reported from Haleiwa. Mills 

 Institute and Kapahulu. All were serum treated with good re- 

 sults. At Mills Institute the serum virus treatment was used, 

 the virus being obtained by cutting off the tail of one very sick 

 sow, wdiich afterwards died. 



SOREHEAD IN CHICKENS. 



With the approach of warm weather, the demand for sorehead 

 vaccine has been steadily increasing. This treatment continues 

 to give good results. On March 20, while visiting Maui, a dem- 

 onstration of the preparation and application of the vaccine was 

 made at Haiku, where Mr. Krauss, of the federal Experiment 

 Station's local branch, had called together many of the poultry 

 raisers of that district. It was learned here that out of all chick- 

 ens hatched after May, ninety per cent die from sorehead. Under 

 these conditions an effective treatment and prevention such as 

 afforded by the vaccination method caused many discouraged 

 poultry raisers, who had practically abandoned the business, to 

 take new hope, and several asserted they would raise one thou- 

 sand chickens annually if sorehead can be kept in check by means 

 of the vaccine. 



In Honolulu the disease at the present time seems to be most 

 prevalent among pigeons, the squabs being very susceptible to the 

 disease. An outbreak of sorehead in a squab-raising establish- 

 ment is further aggravated by the fact that the mother birds 

 soon abandon the young ones when the sores on the head be- 

 come at all emphasized, and especially if diphtheritic exudate 

 occurs in the mouth or throat. The older birds seem to be al- 

 most immune to the disease — at least up to the present time — 



