

PROGRESSIVE POULTRY CULTURE 125 



.0497 of a pound of digestible fat which, multiplied by 

 2 1-4 gives .1118 of a pound. Adding this amount to 

 the content of digestible carbohydrates .6612 of a pound 

 gives a total of .7730 of a pound expressed in terms of 

 digestible carbohydrates. The digestible protein In 

 one pound of Corn is found in Table A to be .0714 of 

 a pound. Dividing the total of nont-nitrogenous diges- 

 tible nutrients .7730 by the digestible protein .0714 gives 

 a result of 10.8 and the proportion may be expressed as 

 follows: 



Protein Carbohydrates Protein Carbohydrates 



.0714 : .7730 equals 1. : 10.8 



Indian Corn is thus shown to have a nutritive ratio of 

 1:10.8 i. e. one part of digestible protein to ten and 

 eight-tenths parts of digestible carbohydrates and fats 

 expressed in terms of carbohydrates. In other words 

 Corn is a starchy food and excellent to feed for keeping 

 up body temperature and for fattening. A feed"Stuff 

 having a nutritive ratio above 1:8 is considered to have 

 a wide ratio. A ratio of 1:5.5 or under is narrow. One 

 between these extremes (e. g. 1:6) is said to be a 

 medium ratio. 



It is evident that a poultry food having a narrow 

 nutritive ratio is comparatively rich in protein and 

 therefore useful to feed for growth and for egg-produc- 

 tion. A food having a wide nutritive ratio is adapted 

 for use in a fattening ration because of its large con- 

 tent of starch or fat or both. 



FEEDING STANDARDS. 



In arranging the rations for feeding his flocks the 

 poultryman should seek to learn definitely what heat- 

 ing power, nutritive ratio and total weight of digestive 

 nutrients will enable his fowls to do their best accord- 

 ing to the purpose he has in view and considering all 

 the surrounding conditions. 



In feeding horses and cattle it is not difficult to 

 fit the ration to the needs of each individual animal but 

 in feeding poultry this is impracticable. Fowls are fed 



