300 SCIENTIFIC FEEDING OF ANIMALS 



materials, such as whey, wheat bran, beet slices. 

 Later, potato pulp and corn, or potato slumps, 

 feeding meals, green maize or other green food 

 and chaff may be given. At suitable periods of 

 the year these animals also find the best and cheap- 

 est nourishment on the pastures. 



Most of the food-stuffs which are used for rearing 

 swine — milk, cereal grains and, above all, potatoes 

 and mangels — contain only a small quantity of 

 lime. By the use of green food, leguminous seeds, 

 etc. and by pasturing this scarcity is lessened to 

 some extent, but still it is often noticeable in the 

 malformation and disease of the bones. It is, 

 therefore, advisable to let the pigs have some 

 carbonate of lime in the form of precipitated chalk 

 from the first week they are born. The quantity 

 must be regulated according to age and size, and 

 will vary from 5-12 g. (J— \ oz.) per head per day. 

 Phosphate of lime or its surrogate (p. 224) will then 

 only be needed when the ration is composed chiefly 

 of those foods which are poor in phosphoric acid 

 (p. 97). As the body of a full-grown pig contains 

 in all 1-15% lime and i- 10% phosphoric acid, and as 

 after a year's fattening an average specimen will 

 have gained about 120 kg., the total increase in 

 this^time will have been 1-35 kg. lime and 1-32 kg. 

 phosphoric acid, which is a daily addition of 3-8 

 and 37 g. respectively. If it be assumed, as is 

 probable, for 1 g. of these materials to be stored in 



