FEEDING SWINE 137 



10 to 12 pounds of digestible carbohydrates, and approxi- 

 mately a half pound of digestible fat. Being a legume, it 

 is of a nitrogenous nature, having a nutritive ratio of 

 about 1 : 4, which suggests its use with such feeds as 

 sweet potatoes, chufas, sacharrine and non-sacharrine 

 sorghums, corn and rice by-products. 



Soy bean pasture. — This legume is generally planted 

 in May and provides pasture from July to November. It 

 ought to be nearly mature before pasturing. It is highly 

 digestible and is rich in oil and protein, containing from 3 

 to 25 per cent of the former and from .5 to 10 per cent of 

 the latter. The digestible carbohydrates run rather low, 

 ranking from 10 to 20 per cent, depending on the stage of 

 .growth and on the feed other than beans consumed. 

 With a nutritive ratio averaging around 1 : 3, it naturally 

 requires with it carbonaceous feeds, such as sweet pota- 

 toes, corn, rice by-products, and sacharrine and non- 

 sacharrine sorghums to make a balanced ration. 



Soy beans are sometimes grown in connection with 

 corn, being planted between the rows, the rows having 

 been left rather wide. It gives great promise of playing 

 a very important role in our general system of swine 

 feeding, as it is already doing in many sections. 



Soy beans. — The seed of the soy bean promises to be- 

 come one of the chief sources of our protein concentrates. 

 The seed are heavy in oil, and this may cause the 

 development of a considerable industry, which will leave 

 the cake for feeding purposes. Either the meal is valu- 

 able, or the whole bean can be fed to advantage, as it is 

 very digestible. The plant can be grown over practically 

 the entire South, and an average yield per acre of around 



