H-123 Basic Problems in Random Sample Testing of Broiler Strains of 

 Chickens. W. M. Collins. 



H-125 The Inheritance of Feed Utilization Efficiency in Poultry. W. M. 



Collins, S. E. Moyer. 

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



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



of Coccidiosis in Growing Birds and Their Subsequent Performance 

 in the Laying House. W. R. Dunlop. (Project closed May 1, 1957.) 



S-62 A Study of the Complication of Pleuropneumonialike Organisms 



when Newcastle Disease and Infectious Bronchitis Vaccinations 

 (Dust) Are Carried Out. W. R. Dunlop. (Project closed May 23, 

 1957.) 



S-71 Control of Avian Coccidiosis. R. G. Strout, W. R. Dunlop, W. C. 



Skoglund. 



State Services 



Inspection of Fertilizers and Feedingstuffs 



The laboratory has analyzed the official samples of commercial fertilizers 

 and fertilizer materials as submitted by the State Department of Agri- 

 culture. Of the 174 samples submitted, 108 met the guarantee in all respects. 

 In addition to the usual nitrogen, phosphoric acid, and potash analyses, 

 magnesium and boron were determined in samples of brands carrying 

 guarantees for these elements. 



In general the manufacturers continue to supply a good product to our 

 farmers. Detailed results of the analyses of these samples are published in 

 Bulletin 432 of this Station. 



In this fiscal year the Control Supervisor submitted 702 official samples 

 of feedingstuffs. Of these, 63 samples represented cat and/or dog foods. 

 Deficiencies were in general small and on the over-all basis, 8.4 percent 

 were deficient in protein, 4.9 percent were deficient in fat, and 3.7 percent 

 contained excess crude fiber. Percentagewise the cat and dog foods varied 

 more from the guarantee than the other type of feeds. These feeds are 

 improving in this respect as time goes on. Sixty-seven samples represented 

 bulk deliveries of feeds and 61 of them were drawn at the farm. Since 

 more and more feed, as well as fertilizer, is being delivered directly from 

 the point of manufacture to the farm, the inspectors are drawing more 

 samples at the farm. 



Constant check is maintained on the analytical methods used in the 

 laboratory. Two check sample programs are participated in by this labor- 

 atory. Over 100 laboratories throughout the country take part in these pro- 

 grams. The laboratory is also asked by manufacturers to supply a part of 

 our sample for checking purposes in many cases when we report a deficiency. 

 In order to continue a good standing, it is necessary that the procedures 

 of analysis be continually checked. 



A total of 32 samples of miscellaneous materials, such as hay, silages, 

 etc., were examined for residents of the state. 



H. A. Davis 



