ANIMAL NUTRITION. 



C3 



tion as to the loss which a farm will sustain by the sale 

 of animal produce. The composition of wool is mainly 

 deduced from foreign analyses. 



ASH CONSTITUENTS AND NITROGEN IN 1000 POUNDS OF 

 VARIOUS ANIMALS AND THEIR PRODUCTS. 



These figures show that the ox contains in proportion 

 to its weight a larger amount of nitrogen, and a much 

 larger amount of phosphoric acid and lime, than either 

 the sheep or pig. Of all the animals raised on a farm the 

 pig contains least of all the important ash constituents. 



The large amount of potash in unwashed wool is very 

 remarkable ; a fleece must sometimes contain more potash 

 than the whole body of the shorn sheep. 



In a fat ox about 60 per cent, of the fasted live weight 

 will be butchers' carcase; in a fat sheep about 58 per cent. ; 

 in a fat pig (fatted for pork) 83 per cent. The proportion 

 of carcase increases considerably during fattening. Thus 

 the carcase in the store sheep killed at Eothamsted 

 averaged 53'4, in the fat sheep 58*6, and in the very fat 

 sheep 64*1 per cent, of the fasted live weight. 



When a lean animal is fattened the larger part of the 

 increase in live w^ eight is carcase. It was found at 

 Tlothamsted that in the case of sheep passing from the 

 "store" to the ''fat" condition, increasing in weight 



