BULLETIN 283 



REPORT OF PROGRESS ON ANIMAL HUSBANDRY 

 INVESTIGATIONS IN 1919. 1 



By John W. Gowen. 



This brief abstract in conformity with previous reports, 2 

 deals with the progress which has been made during the past 

 year in the animal husbandry investigations carried on by the 

 Maine Agricultural Experiment Station. The work has been 

 energetically pushed toward the publication of the results al- 

 ready obtained and to the solution of other problems of im- 

 portance to us as dairymen. Six papers pertaining to this 

 subject have been published or are in press. 



a. Variations and Mode of Secretion of Milk Solids. By 



John W. Gowen. 



b. The Variation of the Milk of Ayrshire Cows in Quan- 



tity and Fat Content of their Milk. By Raymond 

 Pearl and John Rice Miner. 



c. Studies in Milk Secretion. V. On the Variations and 



Correlations of Milk Secretion with Age. By John 

 W. Gowen. 



T'apers from the Biological Laboratory of the Maine Agricultural 

 Experiment Station No. 130. 



This report of progress during the year 1919 of the work on animal 

 breeding and related lines (exclusive of the work with poultry) carried 

 on in the Biological Laboratory of the Maine Agricultural Experiment 

 Station, was presented as the report of the Committee on Breeding of 

 the Maine Dairymen's Association at the meeting held in Bangor Novem- 

 ber 19, 1919. 



2 Gowen, John W., Report of Progress on Animal Husbandry Inves- 

 tigations in 1917. In 1918 Maine Agricultural Experiment Station An- 

 nual Report, pp. 205-228, 1918. 



Pearl, R., Report of Progress on Animal Husbandry Investigations 

 in 1916, Maine Agricultural Experiment Station, Annual Report, pp. 

 121-144, 1916. 



Pearl, R., Report on Animal Husbandry Investigations in 1915, Maine 

 Agricultural Experiment Station Misc. Publ., 519, 1-27, 1915. 



