Poultry Husbandry 



P-102 The Inheritance of Feed Utilization Efficiency in Poultry. W. M. 

 Collins, F. Cherms, G. E. Wood. 



P-103 Breeding for Meat-Type in Chickens. W. M. Collins, W. C. Skog- 

 lund, F. Cherms. 



P-107 Efficiency of Feed Utilization in Poultry Production. R. C. Ring- 

 rose. 



P-117 Problems Involved in the Vaccination of Infectious Bronchitis. 

 W. R. Dunlop. 



BJ9-10 A Study of Methods in the Development and Management of 

 Pastures for Growing Pullets. R. C. Ringrose. 



BJ9-20, NE-5 The Control of Newcastle Disease and Allied Respiratory 

 Diseases in Poultry. W. R. Dunlop. 



BJ9-26 Factors Influencing the Market Quality of Eggs on New Hamp- 

 shire Farms. W. C. Skoglund. 



BJ9-36, NE-8 Influence of Light and Humidity Upon the Physical Con- 

 dition of Broilers. W. C. Skoglund. 



BJ9-40, NE-6 Selection for General and Specific Combining Ability for 

 Growth Rate. W. M. Collins, F. Cherms. 



S-55 Factors Influencing Sexual Maturity of Pullets. R. C. Ringrose. 



S-56 The Effect of Low Level Chemotherapeutic Drugs in the Control 

 of Coccidiosis in Growing Birds and Their Subsequent Performance in the 

 Laying House. W. R. Dunlop. 



State Services 



Inspection of Fertilizers and Feedingstuffs 



In accordance with State laws regulating the sale of fertilizers and 

 fertilizer materials, 120 samples were analyzed. Of these, 79 were complete 

 fertilizers, the balance supplied one or two plant nutrients in each case. 

 Of the total number, 69 equalled or exceeded the guarantees in all respects. 

 In general, the deficiencies found were small. The fertilizer manufacturers 

 are doing a good job in providing a good product that, when used as 

 recommended, should be satisfactory. Detailed results of the analysis of 

 these samples are published in Bulletin 414 of this Station. 



A total of 710 official samples of feedingstuffs were submitted for 

 analysis as a part of the State program of inspection of feedingstuffs offered 

 for sale. Of these, 649 represented livestock and poultry feeds and 61 repre- 

 sented dry or canned cat and dog food. The products of 101 manufacturers 

 were inspected. The deficiencies found were in general small. 10.3 percent 

 were deficient in protein, 6.9 percent were deficient in fat and 5.9 percent 

 contained an excess of crude fiber compared to the guarantee. Detailed 

 results of the analyses are published in Bulletin 421 of this Station. 



To check on the accuracy and effiectiveness of methods used in the 

 laboratory, two series of check samples were analyzed during the year. 

 One series of 15 samples was supplied by the American Oil Chemists 



