The Pkoduotion of Manure. 



185 



Pounds. 



Total weight of horses 6410 



Plaster used 129 



Straw bedding used 112.75 



Total weight of manure 555 



Value of excrement per year per 1000 lbs. live weight $27.74 



Value of manure per ton 2 21 



Value of excrement per ton 3 18 



ANALYSIS OF MANURE. 



Water 



Nitrogen 



Phosphoric acid 

 Potash 



Per cent. 

 . 48.69 



.49 

 .26 



.48 



Pee 1,000 Lbs. Live Weight op Animal Per Day. 



Recovered 



Value recovered, 



Nitrogen, 

 pounds. 



.376 

 .0559 



Phos. acid, 

 pounds. 



.181 

 $ .0108 



Potash, 

 pounds. 



.216 

 $ .0097 



Total 

 value. 



$ .076 



Value per year, $72.74. 



Excrement recovered per 1000 lbs. live weight of animal per day, 48.8 lbs. 



In this experiment the quantity of straw used as bedding was 

 sufficient to keep the horses clean and probably would be similar in 

 quantity to the amount of straw used in ordinary practice. The 

 amount of plaster used, however, was greater than would ordinarily be 

 be use; this would tend to make the manure of less value per ton than 

 average horse manure where plaster was not used. The value of the 

 excrement, however, would not be changed by the use of plaster unless 

 it prevented waste by its use as aa absorbent. The following table 

 gives the average analysis of each kind of manure: 



Analyses and Value Per Ton. 



2^ 



