722 



The Value of Poultry Manure, [march, 



of growing chickens, upon the basis of C we estimate that each 

 produces to the age of thirteen weeks 5 lb. 5 oz. of manure, and 

 if then fatted would have yielded at the time of killing 10 lb. 13 oz. 

 Further, if instead of fattening such chickens they were allowed 

 to grow, they woaild by the time they reached twenty-six weeks 

 have yielded 25 lb. 5 oz. of manure each. The cash values are 

 given later, 



Diicks^ Gees-e amd Turkeys. — Similar observations have also 

 been made with, ^ucks, geese, and turkeys, but for various 

 reasons they have not been carried out so completely. Enough, 

 however, has been done to indicate the quantities produced by 

 adult birds. The question of young stock must be left over for 

 future experiments. 



For this piirpose a 'laTge Aylesbury duck, weighing about 

 7 lb., a cross-bred goose, and a Bronze turkey were selected. 

 The last named was a growing cock weighing 17 lb. The 

 manure prodacod was as follows : — Duck, 6 lb. io| oz. per week ; 

 goose, lo lb. £ Qz, per w-eek ; turkey, 4 lb. i J oz. per week. 



Upon this basis it will be seen that an adult duck, of the 

 size named, w-Guld produce in the twelve months 346 lb. 14 oz. 

 of fresh niaoure^ or 76 lb. 5 oz. of dry matter. Thus 6h ducks 

 would give a ton of fresh manure annually, and twenty-nine 

 ducks a ton of dry oaatter. 



An adtilt goose at the sam.e rate would produce in the twelve 

 months 523 Ih. of fresh manure, or 91 lb. of dry matter; 

 thus four g-eese would produce nearly a ton of fresh manure, 

 but, by reasoK of the large proportion of moisture in goose 

 manure, toeety-four bards would be required to yield nearly 

 a ton of dry oiatter. 



A turkey of the weight oamed would produce in the twelve 

 months 212 lb. of fresh manure, or 53I lb. of dry matter. 

 Thus EO^ turkeys would produce a ton of fresh manure, or 

 forty-t\Ji.^ turkeys a ton of dry matter. 



Anafysls €>f Manure, — For the purpose of analysis, samples • 

 were takeji from the ordinary fowls and not those produced by 

 the birds kept shatup for the testing of quantities. Those shown 

 in I., IL, LII^ IV, were from stock at the College Poultry Farm, 

 Theale, and for V. (goose) and VI. (turkey) we are indebted to 

 the courtesy of Messrs. Abbot Bros., of Thuxton, Norfolk, the 

 well-known poultry breeders. For comparison we include 



