4 X. H. Agr. Experiment Station [Bulletin 312 



Groups 1, 2, and 3: basal ration plus meat scraps to make 15, 17, and 19 

 l)er cent protein content, respectively. Groups 4, 5, and 6: basal ration 

 plus white fish meal, vacuum processed, to make 15, 17, and 19 per cent 

 protein content, respectively. Groups 7, 8, and 9: basal ration plus dried 

 skinnnilk to make 15, 17, and 19 per cent protein content respectively. 

 Groups 10, 11, and 12: basal ration plus a combination of the three ani- 

 mal i)rotein sources in equal protein-carrying amounts to make 15, 17, 

 and 19 per cent protein content respectively. 



The basal ration was composed of 200 pounds yellow corn meal, 100 

 pounds wheat bran, 100 i)ounds white flour middlings, 100 pounds ground 

 heavy oats, 25 pounds alfalfa leaf meal, 15 pounds oyster shell flour, 5 

 pounds salt and 3 pounds biologically tested sardine oil. All groups in 

 both Test I and II were fed this ration plus specified animal protein in an 

 all-mash form throughout the experimental procedure. 



In Test I all chicks used were individually wing-banded and weighed 

 weekly throughout the experimental period of 70 weeks. In Test II 

 average group weights were recorded up to time of placement in laying 

 cages. Individual bi-monthly weights were recorded from this period to 

 the end of the test. Feed consumption records in Test I were determined 

 weekly by groups throughout the first 12 weeks of the experimental 

 period. After females were placed in laying cages the feed consumption 

 was maintained weekly on an individual bird basis. In Test II feed con- 

 sumption records were maintained throughout the experimental period on 

 a group basis weekly. 



Protein Concentrates Used 



Meat Scraps used in the two tests were made from butcher shop and 

 packers' trimmings. The product at the time of purchase was not over 

 ten days old, but complete history of its manufacture together with 

 prrrentago amounts of its component parts could not be secured. 



Dried Skimmilk was made by the roller process and was received 

 witjiin one week of the date of manufacture. 



The Fish Meal used in the tests is commonly termed vacuum-processed 

 white fish meal. It was made from fish that were caught one day and 

 jirocossed the following day. The product produced contained several 



Table II. Calcium-phosphorus content of mixed rations as determined 



by computation; Test II 



Ration " Ca/P 



15% Meat scrap 2.58:1 



17% Meat scrap 2.46:1 



19% Meat scrap 2.37:1 



1.5% Fish meal 2.59:1 



17% Fish meal 2.45:1 



19% Fish meal 2.3G:1 



15% Dried skimmilk 2.63:1 



177p Dried .skimmilk 2.47:1 



19% Dried skimmilk 2.0<.):1 



15% Mixture 2.60:1 



17% Mixture 2.47:1 



19% Mixture 2.39:1 



